Many parents wonder whether their child is getting enough vitamins and nutrients, and you may have asked yourself the same question. It is a common concern, especially if your child is a fussy eater, avoids certain food groups, follows a vegetarian or vegan diet, has food allergies, eats very small portions or seems tired, pale or slower to grow than expected.
The good news is that most children can get the nutrients they need from a varied, balanced diet. However, some vitamins are routinely recommended for young children in the UK, and your child may be at a higher risk of nutritional deficiencies because of their diet, medical conditions, growth pattern or lifestyle.
The NHS advises that children should eat a wide variety of foods in the right proportions to receive the nutrients they need for healthy growth and development. From around the age of two, your child should gradually move towards eating the same foods as the rest of the family, following the principles of the Eatwell Guide. The Eatwell Guide does not apply to children under two years of age because their nutritional needs are different.
Why Vitamins and Nutrients Matter in Childhood
Vitamins and nutrients are essential for every stage of your child’s growth and development. They support healthy bones, brain development, muscle function, immunity, energy levels, blood health, digestion and the everyday activities that help your child learn, play and grow.
Your child needs both macronutrients, such as carbohydrates, protein and healthy fats, and micronutrients, including vitamins and minerals. Even if they are eating enough food, a very limited diet may mean they miss out on important nutrients. Likewise, eating nutritious foods but not enough overall energy can affect growth, stamina and concentration.
It is important to look at your child’s diet as a whole rather than focusing on individual meals. Good nutrition is built over time, so what your child eats across days and weeks is much more important than trying to make every meal perfect.
Most Children Do Not Need Lots of Supplements
It is easy to feel influenced by children’s multivitamins, gummies, powders and products that claim to support immunity. If you are concerned about your child’s diet, it may seem as though more supplements will provide extra protection, but this is not always the case.
UK guidance recommends daily supplements containing vitamins A, C and D for children aged six months to five years. Babies who are breastfed should receive vitamin D from birth. Babies drinking more than 500 ml of infant formula each day usually do not need additional vitamin drops because formula is already fortified.
In most cases, supplements should be used to meet a specific nutritional need rather than replace a healthy, balanced diet. If your child has ongoing feeding difficulties, poor growth or other health concerns, it is important to seek professional advice instead of relying on supplements alone.
Evidence Note
UK public-health guidance recommends specific vitamin supplementation for babies and children under five, but it does not recommend routine high-dose or broad-spectrum supplementation for every child. A restricted diet, symptoms or poor growth should be assessed individually so that any supplement addresses the actual nutritional need.
Common Myths About Children’s Vitamins
| Myth | Fact |
| Every child needs a large multivitamin | Many children get most nutrients from food, though UK vitamin D and under-5 guidance still applies |
| More vitamins mean better health | Excess doses can be harmful |
| Fussy eaters are always deficient | Some fussy eaters still grow well and meet nutrient needs |
| Supplements can replace meals | Supplements cannot replace a varied diet or treat feeding problems alone |
| Vegan children cannot be healthy | Vegan diets can be planned well, but B12, vitamin D, calcium, iodine, iron and selenium need attention |
| Tiredness always means low iron | Tiredness has many causes and needs assessment if persistent |
| Formula-fed babies always need vitamin D drops | Babies taking more than 500ml formula daily usually do not need separate vitamin D because formula is fortified |
| Iron is safe because it is a nutrient | High doses of iron can be dangerous and must be stored safely |
| A normal weight means nutrition is always fine | Some children may have micronutrient gaps despite normal weight |
| One “superfood” can fix poor nutrition | Overall variety matters more than one food |
Understanding these myths helps parents make safer, calmer decisions.
What Does a Balanced Diet Look Like?
Once your child is over the age of two, they should gradually eat a balanced diet that includes a variety of foods from the main food groups. Offering different foods throughout the week helps provide the vitamins, minerals and energy needed for healthy growth and development.
The NHS recommends including at least five portions of a variety of fruit and vegetables each day, choosing higher-fibre starchy foods, including dairy or fortified dairy alternatives, and offering beans, pulses, fish, eggs, meat or other sources of protein. Small amounts of unsaturated oils and spreads can also form part of a healthy diet.
Your child does not need to eat every food group perfectly at every meal. For younger children, portion sizes are naturally smaller, and eating habits often vary from day to day. If your child is growing well, has good energy levels and is developing as expected, these changes in appetite are usually a normal part of childhood.
Key Nutrients Children Need
Children need many nutrients, but some are especially important because parents often worry about them, or because deficiencies can affect growth and development.
| Nutrient | Why It Matters | Common Food Sources |
| Vitamin D | Bone and muscle health, calcium absorption | Sunlight, oily fish, eggs, fortified foods, supplements |
| Calcium | Bones and teeth | Milk, yoghurt, cheese, age-appropriate unsweetened fortified plant-based drinks, calcium-set tofu and some green vegetables |
| Iron | Red blood cells and oxygen transport | Meat, fish, eggs, beans, lentils, fortified cereals, leafy greens |
| Vitamin A | Immune function, skin and vision | Dairy, fortified spreads, carrots, sweet potato, mango, dark green vegetables |
| Vitamin C | Immune function, skin, wound healing, helps iron absorption | Citrus fruits, berries, peppers, tomatoes, broccoli, potatoes |
| Vitamin B12 | Red blood cells and nervous system | Meat, fish, eggs, milk, cheese, fortified foods |
| Folate | Cell growth and blood health | Green vegetables, beans, peas, fortified cereals |
| Iodine | Thyroid hormone production and growth | Dairy, fish, eggs, some fortified foods |
| Zinc | Growth, immunity and wound healing | Meat, shellfish, dairy, beans, nuts, seeds, wholegrains |
| Omega-3 fats | Brain, heart and eye health | Oily fish, some seeds and nuts, fortified foods |
No single food provides everything. Variety is the key.
Vitamin D: The Nutrient Parents Should Not Ignore
Vitamin D is one of the most important nutrients for your child, particularly in the UK where it can be difficult to get enough from food alone. If you are wondering whether your child needs a vitamin D supplement, you are not alone, as this is one of the most common questions parents ask.
Breastfed babies from birth to one year should receive 8.5 to 10 micrograms of vitamin D daily. Formula-fed babies usually need vitamin D only if they drink less than 500 ml of infant formula each day.
Children aged one to four years should receive 10 micrograms daily throughout the year. From the age of five, children should generally consider 10 micrograms daily during autumn and winter. Children with dark skin, very limited outdoor exposure or skin that is usually covered outdoors may be advised to take it throughout the year.
UK Vitamin Recommendations for Babies and Young Children
UK guidance provides clear recommendations about vitamin supplements for babies and young children. If you are unsure whether your child needs a supplement, these recommendations can help you make an informed decision.
The NHS advises vitamin D supplements for breastfed babies and for children aged one to four years. Babies who drink more than 500ml of infant formula each day usually do not need an extra supplement.
If you are unsure which vitamin drops or supplements are right for your child, speak to your health visitor, GP or pharmacist. They can help you choose the most suitable option based on your child’s age, diet and feeding pattern.
UK Vitamin Supplement Advice by Age
| Child’s Age or Situation | Usual UK Advice |
| Breastfed baby from birth to 1 year | Daily vitamin D supplement containing 8.5 to 10 micrograms |
| Formula-fed baby drinking more than approximately 500 ml of infant formula daily | Usually no separate vitamin D needed because formula is fortified |
| Baby aged 6 to 12 months | Vitamins A, C and D are generally recommended unless enough formula is taken |
| Child aged 1 to 4 years | Daily supplement containing vitamins A, C and D, including 10 micrograms of vitamin D |
| Child over 4 years | Consider 10 micrograms vitamin D daily in autumn and winter |
| Child over 4 at higher risk of low vitamin D | Consider 10 micrograms vitamin D all year |
| Child on a restricted diet | May need individual advice about nutrients such as B12, iron, calcium, iodine or vitamin D |
This table is a general guide. Medical conditions, formula intake, diet and prescribed supplements can change what is appropriate.
Children Aged Five and Over and Vitamin D
For children over the age of four, vitamin D advice depends on the time of year and your child’s individual risk factors. If you are unsure whether your child needs a supplement, it is worth considering how much sunlight they are exposed to throughout the year.
The NHS advises that children over four should consider taking a daily 10 microgram vitamin D supplement during autumn and winter. Year-round supplements may also be recommended if your child has very little sun exposure or has darker skin.
You should not give your child high-dose vitamin D supplements unless they have been prescribed by a healthcare professional. If you are unsure what is right for your child, speak to your GP or pharmacist for advice.
Can Too Much Vitamin D Be Harmful?
Yes. Although vitamin D is essential for your child’s health, too much can be harmful. If you are giving your child a supplement, it is important to use the recommended dose rather than assuming that more is better.
Too much vitamin D over time can cause excessive calcium to build up in the body. Do not exceed the dose on the label or combine vitamin D products unless a healthcare professional has checked the total amount.
Current upper intake levels are 25 micrograms daily for babies aged zero to six months, 35 micrograms for babies aged seven to eleven months and 50 micrograms for children aged one to ten. These are safety limits rather than recommended routine doses. Prescribed treatment for diagnosed deficiency may use different doses under medical supervision.
Calcium for Bones and Teeth
Calcium is essential for building strong bones and healthy teeth throughout childhood. As your child grows, getting enough calcium becomes especially important during periods of rapid growth and development.
The NHS explains that milk, cheese and yoghurt are good sources of calcium. If your child does not have dairy, fortified soya products and other fortified alternatives can also help provide this important nutrient.
If your child avoids dairy because of an allergy, intolerance or a vegan diet, you may need to plan their meals more carefully. Calcium can also come from foods such as calcium-set tofu, fortified plant drinks, some leafy green vegetables and bread, helping your child meet their daily needs.
Clinical Note
Plant-based drinks are not suitable as a replacement for breast milk or infant formula during your baby’s first year. From age one, an unsweetened fortified alternative may be suitable as part of a balanced diet, but products vary considerably in energy, protein, calcium, iodine and vitamin content.
Rice drinks should not be given to children under five because of their arsenic content. If dairy is excluded because of an allergy or vegan diet, ask a dietitian or healthcare professional which alternative is suitable.
Iron for Energy and Blood Health
Iron is an important nutrient that helps your child’s body make red blood cells, which carry oxygen around the body. If you are concerned that your child seems tired or lacks energy, it is natural to wonder whether iron could be part of the reason.
Your child may be more likely to have low iron if they eat a very restricted diet, drink too much milk instead of eating balanced meals, have heavy periods as a teenager or have certain medical conditions. Signs can include tiredness, pale skin, headaches and poor concentration, although these symptoms can have many possible causes.
You should never give your child high-dose iron supplements without medical advice. The NHS warns that too much iron can be dangerous, especially for children, so you should always keep iron supplements safely out of their reach.
Vitamin B12 and Restricted Diets
Vitamin B12 is essential for your child’s red blood cells, nervous system and normal energy release. If you are planning a restricted diet for your child, it is important to make sure they receive enough vitamin B12.
The NHS explains that vitamin B12 is naturally found in foods such as meat, fish, milk, cheese and eggs, as well as some fortified breakfast cereals. If your child follows a vegan diet or eats very little animal-based food, they may need fortified foods or a suitable vitamin B12 supplement.
A lack of vitamin B12 can affect your child’s blood health and nervous system if it is not recognised and treated. If you are concerned about your child’s intake, speak to your GP or a registered dietitian for advice.
Vegetarian and Vegan Diets in Children
Children can follow a vegetarian or vegan diet, but it needs careful planning to provide enough energy, protein, vitamins and minerals for healthy growth. If you choose this type of diet for your child, it is important to make sure it is well balanced.
The NHS advises that children following a vegan diet need a wide variety of foods to meet their nutritional needs. You should pay particular attention to nutrients such as vitamin B12, vitamin D, calcium, iron, iodine, selenium, zinc, omega-3 fats and overall energy intake.
If your child is vegan, has food allergies, is a fussy eater, is underweight or has a very restricted diet, you may benefit from advice from a paediatric dietitian. They can help you plan meals that support your child’s growth and development.
Nutrients That Need Extra Attention in Restricted Diets
| Diet Pattern | Nutrients to Watch | Practical Notes |
| Vegetarian | Iron, B12, zinc, omega-3, protein | Eggs, dairy, pulses, fortified cereals and nuts may help |
| Vegan | B12, vitamin D, calcium, iodine, selenium, iron, zinc, omega-3, protein | Fortified foods and supplements are often needed |
| Dairy-free | Calcium, vitamin D, iodine, protein | Choose suitable fortified alternatives and get advice for young children |
| Gluten-free | Fibre, iron, B vitamins, overall variety | Use naturally gluten-free nutrient-rich foods and check for coeliac guidance |
| Very fussy eating | Iron, zinc, fibre, vitamins A, C and D | Track weekly variety and growth |
| Allergy-restricted diet | Depends on excluded foods | Dietetic support is often useful |
| Low-meat diet | Iron, zinc, B12 | Include pulses, eggs, fish, fortified foods where suitable |
A restricted diet can still be healthy, but it should not be nutritionally accidental.
Vitamin A and Vitamin C
Vitamin A and vitamin C are both important for your child’s growth and overall health. Vitamin A supports the immune system, healthy skin and vision in dim light, while vitamin C helps with wound healing, skin health and the absorption of iron from plant-based foods.
The NHS recommends foods such as dairy products, fortified fat spreads, carrots, sweet potatoes, mangoes and dark green vegetables as good sources of vitamin A. You can increase your child’s vitamin C intake by offering a variety of fruit and vegetables as part of a balanced diet.
UK guidance recommends daily supplements containing vitamins A, C and D from six months to five years. Babies drinking more than 500 ml of infant formula daily usually do not need additional vitamin drops because formula is already fortified. Check the label before combining supplements, as products such as cod liver oil and vitamin drops may both contain vitamins A and D.
Iodine, Zinc and Selenium
Iodine, zinc and selenium are needed in much smaller amounts than some other nutrients, but they are still important for your child’s health. They help support normal growth, immunity, wound healing and healthy thyroid function.
Your child will usually get enough of these nutrients by eating a varied diet that includes foods such as dairy products, fish, eggs, meat, grains, pulses, nuts and seeds. If your child follows a vegan diet or has a very restricted diet because of allergies or food preferences, you may need to plan their meals more carefully.
The NHS notes that poorly planned vegan diets may be low in nutrients such as iodine, selenium, calcium, iron and vitamin B12. If you are unsure whether your child is getting enough, it is best to speak to a registered dietitian before giving multiple supplements.
Omega-3 Fats
Omega-3 fats are important for your child’s overall health and development, and oily fish is one of the best natural sources. If you are planning your child’s meals, including omega-3-rich foods can help support a balanced diet.
Try to include fish in your child’s diet where suitable, including at least one age-appropriate portion of oily fish each week. Girls should have no more than two portions of oily fish weekly and boys no more than four.
If your child does not eat fish, foods such as ground flaxseed, chia seeds, walnuts and rapeseed oil provide alpha-linolenic acid, although this is not nutritionally identical to the long-chain omega-3 fats found in oily fish.
Signs Your Child May Not Be Getting Enough Nutrients
It is not always easy to recognise a nutritional deficiency because the symptoms are often vague and can have many different causes. If you have noticed changes in your child’s health or behaviour, it does not automatically mean they are lacking vitamins or minerals.
Possible signs include persistent tiredness, pale skin, poor appetite, slow growth, weight loss, frequent mouth ulcers, cracked corners of the mouth, hair thinning, brittle nails, bone or muscle pain, delayed walking, recurrent or unusually severe infections, poor concentration, dizziness, shortness of breath or other developmental concerns. Infections are not a reliable sign of one particular deficiency and may require a broader medical assessment.
These symptoms do not confirm that your child has a nutritional deficiency, but they should not be ignored. If you are worried about your child’s growth, diet or overall health, it is sensible to arrange an assessment with a healthcare professional.
Deficiency Signs at a Glance
Nutritional deficiencies do not always cause obvious symptoms, and many possible symptoms are nonspecific. Tiredness, poor concentration, mouth ulcers, slow growth or changes in hair and nails can occur for nutritional and non-nutritional reasons.
These signs should prompt an assessment of your child’s diet, growth, symptoms and medical history rather than immediate self-treatment with supplements.
| Possible Sign | Nutrient Concern That May Be Considered | Important Note |
| Tiredness and low energy | Iron, B12, vitamin D, overall intake | Many non-nutritional causes are also possible |
| Pale skin | Iron deficiency anaemia | Needs medical assessment and blood tests |
| Poor growth | Calories, protein, iron, zinc, chronic illness | Growth charts are important |
| Bone pain or delayed walking | Vitamin D or calcium | Needs prompt review |
| Mouth ulcers or cracked lips | B vitamins, iron, general nutrition | Can also occur for other reasons |
| Recurrent or unusually severe infections | Not a reliable sign of one particular deficiency and may need a broader medical assessment | Do not assume supplements are the answer |
| Poor concentration | Iron, B12, sleep, neurodevelopmental or emotional factors | Needs broader assessment |
| Restricted food range | Multiple possible nutrients | Dietetic support may help |
| Heavy periods in teenagers | Iron | GP review may be needed |
| Vegan diet without supplements | B12, vitamin D, iodine, calcium | Needs planned supplementation and fortified foods |
Blood tests are sometimes needed, but they should be guided by symptoms, diet and clinical assessment.
Growth Provides Important Information
Your child’s growth is one of the best ways to understand whether they are getting enough nutrition overall. If you are worried about their diet, looking at their growth over time often provides more useful information than focusing on individual meals.
If your child is growing steadily, has appropriate energy and development and eats a reasonable variety of foods, severe undernutrition is less likely. However, normal weight and height do not rule out deficiencies such as vitamin D, iron, vitamin B12 or iodine deficiency, particularly when the diet is restricted.
If your child is losing weight, not gaining weight as expected, dropping centiles or growing more slowly than expected, they should be assessed. NICE recommends a detailed assessment of growth, development and feeding, so you should not rely on over-the-counter supplements alone to manage these concerns.
Clinical Tip
Bring your child’s red book or growth records, a five-to-seven-day food and drink diary and photographs of any supplements to the appointment. Include brand names and doses, as several products may contain the same vitamins.
Fussy Eating and Nutrient Intake
Fussy eating is very common, especially during the toddler years. If you have a child who refuses vegetables, prefers only a few favourite foods or eats different amounts each day, it does not necessarily mean they are missing important nutrients.
What matters most is your child’s overall eating pattern, growth, energy levels and whether the variety of foods is becoming more limited over time. You may find it helpful to keep a simple food diary for five to seven days, rather than worrying about one difficult meal or a single bad day.
Seek professional advice if your child’s food range is becoming progressively narrower, they avoid entire food groups, regularly gag or vomit with textures, have difficulty chewing or swallowing, lose weight, drop growth centiles or experience intense distress around meals.
Too Much Milk Can Affect Nutrient Balance
Milk is an important source of nutrition for your child, but drinking too much can reduce their appetite for other foods. If you notice that your child fills up on milk and then refuses meals, it may affect the balance of nutrients in their diet.
This is particularly common in toddlers who drink large amounts of milk and eat very little iron-rich food. NICE advises that too many energy-dense drinks, including milk, can reduce a child’s appetite for other foods, especially when there are concerns about growth.
If milk is replacing meals or your child has growth or feeding concerns, ask a health visitor, GP or dietitian how to adjust the amount safely.
When Supplements May Be Recommended
Supplements may be recommended when your child is not getting enough of a particular nutrient through their diet alone. If you are concerned about your child’s nutrition, a healthcare professional can advise whether a supplement is appropriate.
Common examples include vitamin D for babies and children in line with UK guidance, vitamins A, C and D for young children, vitamin B12 for vegan children, iron when deficiency is confirmed, and calcium or vitamin D if your child’s intake is low.
For continuing faltering growth, NICE recommends first addressing feeding and food choices, considering short-term food fortification and paediatric dietetic referral. A trial of an oral liquid nutritional supplement may be considered if growth concerns continue despite these measures, with regular reassessment of whether it is still needed.
The right supplement depends on your child’s individual needs. You should avoid choosing a generic multivitamin in the hope that it will solve every problem, as different deficiencies require different treatments.
Supplement Safety
Supplements can be helpful when your child needs them, but they can also be harmful if they are used incorrectly. If you are thinking about giving your child a supplement, it is important to choose one that is suitable for their age and nutritional needs.
You should never give your child adult supplements or combine multiple multivitamins unless a healthcare professional has checked the doses. The NHS also warns that very high doses of iron can be fatal, especially for children, while too much vitamin D can lead to harmful calcium build-up in the body.
If your child takes regular medication or has an underlying health condition, you should always check with your GP, pharmacist or another healthcare professional before starting any supplement. This helps ensure the product is both safe and appropriate for your child.
Are Gummy Vitamins a Good Idea?
Gummy vitamins can be a convenient way to give your child certain nutrients, but they are not always the best option. If you are considering them, it is worth checking what they contain rather than assuming they are the healthiest choice.
Some gummy vitamins contain added sugar, sweeteners or lower amounts of key nutrients. Your child may also mistake them for sweets, so you should always follow the recommended dose and keep them safely out of reach.
For children under five, choose a preparation that provides the recommended vitamins A, C and D in an age-appropriate dose. This may be supplied as drops or another suitable formulation. Check the label and ask a pharmacist if you are unsure.
Food First: Simple Ways to Improve Nutrient Intake
For most children, the best way to improve nutrition is through everyday food rather than supplements. If you focus on offering a wide variety of foods over time, your child is more likely to get the vitamins and minerals they need.
You can support your child’s nutrient intake by offering fruit or vegetables with most meals, iron-rich foods, dairy or fortified alternatives, wholegrain starchy foods, protein sources and healthy fats. Pairing plant-based iron foods with foods rich in vitamin C can also help your child absorb more iron.
The NHS encourages families to include a variety of foods from the main food groups instead of aiming for a perfect diet every day. If you make small, realistic changes, your child is more likely to develop healthy eating habits that last.
Nutrient-Rich Meal Ideas
| Meal or Snack | Nutrients Supported |
| Porridge made with milk or fortified plant milk plus berries | Calcium, fibre, vitamin C, energy |
| Scrambled egg on wholemeal toast | Protein, B vitamins, iron, iodine |
| Lentil soup with bread | Iron, zinc, fibre, protein |
| Yoghurt with fruit | Calcium, protein, vitamin C |
| Beans on toast | Iron, fibre, protein |
| Salmon or sardines with potatoes and vegetables | Omega-3, vitamin D, protein, iodine |
| Hummus with pitta and cucumber | Protein, iron, fibre |
| Fortified breakfast cereal with milk | Iron, B vitamins, calcium |
| Tofu stir-fry with rice | Protein, calcium if calcium-set tofu is used |
| Nut butter on toast, where safe and age-appropriate | Energy, healthy fats, protein |
Adapt foods to your child’s age, allergy status, chewing ability and preferences.
Helping a Fussy Eater Without Pressure
Pressure around food can make fussy eating more difficult for your child. If you are struggling with mealtimes, keeping things calm and predictable can help your child feel more comfortable around food.
You can offer small portions, include a familiar food alongside something new and let your child see you enjoying a variety of foods. NICE recommends relaxed and enjoyable mealtimes, eating together where possible, encouraging children to feed themselves and allowing messy play with food when there are concerns about growth.
You should avoid forcing, bribing, chasing your child with food or making every meal a battle. If you continue offering new foods without pressure, your child may become more willing to try them over time.
When Blood Tests May Be Needed
Blood tests may be considered if your child’s symptoms, diet or growth suggest there could be an underlying problem. If you are concerned about your child’s nutrition, a GP or paediatrician can decide whether tests are needed based on their overall health and development.
Depending on your child’s symptoms, tests may look for issues such as iron deficiency anaemia, vitamin D deficiency, vitamin B12 deficiency, thyroid problems, coeliac disease or inflammation. NICE advises that further investigations should be guided by clinical assessment rather than carried out routinely for every child.
Not every child who is a fussy eater needs blood tests. However, if your child has a very restricted diet, ongoing symptoms or concerns about growth, you should seek advice rather than ignoring the signs.
When to See a GP
You should speak to a GP if your child has ongoing tiredness, pale skin, poor growth, weight loss, poor appetite or other concerns such as vomiting, diarrhoea, constipation with poor intake, bone pain, delayed walking, heavy periods or frequent mouth ulcers.
It is also important to seek advice if your child has allergies, a vegan diet, feeding difficulties, swallowing problems or developmental concerns. If you are unsure whether their diet is providing enough nutrients, a GP can help assess the situation.
Your GP can review your child’s growth, symptoms and diet, and decide whether blood tests or further referral are needed. If you can, bring a food diary and details of any supplements your child is already taking to help with the assessment.
When to See a Paediatrician or Dietitian
A paediatrician may be helpful if you are concerned about your child’s nutrition alongside issues such as growth, development, fatigue, frequent illness, gut symptoms, feeding difficulties, allergies or possible deficiencies.
A paediatric dietitian can help you create a safe and practical nutrition plan, especially if your child has allergies, faltering growth, avoidant eating, follows a vegan diet or needs specialist nutritional support. They can guide you on suitable foods, supplements and ways to improve intake.
Getting professional advice can help you make sure your child receives the support they need. It can also help you avoid missing a genuine deficiency or using supplements that are not necessary.
When Nutrition Concerns Need Urgent Help
Contact NHS 111 or seek urgent medical advice if your child becomes drowsy, stops drinking or breastfeeding, cannot keep fluids down, has significantly fewer wet nappies or urine, has few or no tears, or shows other signs of dehydration.
Seek prompt medical advice if your child has blood in their stool, particularly when it is accompanied by diarrhoea, abdominal pain, vomiting, fever or worsening illness.
Call 999 or attend A&E if your child has serious breathing difficulty, becomes unresponsive, collapses, is difficult to wake or develops signs of a severe allergic reaction. Do not try to manage serious or rapidly worsening symptoms with vitamins, nutritional drinks or supplements at home.
Key Takeaways
- Most nutrients should come from a varied diet, but UK vitamin guidance still applies.
- Breastfed babies need vitamin D from birth.
- Children aged six months to five years are generally advised to receive vitamins A, C and D.
- Babies drinking more than 500 ml of infant formula daily usually do not need additional vitamin drops.
- Children aged one to four need 10 micrograms of vitamin D throughout the year.
- Normal growth does not exclude every micronutrient deficiency.
- Vegan, dairy-free and highly restricted diets need careful planning.
- Plant-based drinks should not replace breast milk or formula before age one.
- Rice drinks should not be given to children under five.
- Iron and high-dose vitamin supplements can be dangerous when used incorrectly.
- Blood tests and supplements should be guided by clinical assessment.
- Poor growth or persistent feeding difficulty requires medical review, while dehydration or serious illness may require urgent or emergency assessment.
FAQs:
1. How can I tell if my child is getting enough vitamins and nutrients?
A child who is growing steadily, has appropriate energy and development and eats a reasonable variety of foods is less likely to have severe undernutrition. However, normal growth does not rule out every vitamin or mineral deficiency, particularly when the diet is highly restricted. If you are concerned about poor growth, persistent tiredness, a restricted diet or other symptoms, a GP or paediatrician can decide whether further assessment is needed.
2. Does my child need a daily multivitamin?
Not every child needs a broad multivitamin. However, UK guidance recommends vitamin D from birth for breastfed babies and daily vitamins A, C and D from six months to five years, unless a baby is drinking more than 500 ml of infant formula daily. Other supplements should address a clearly identified dietary or medical need.
3. What are the signs of a vitamin or mineral deficiency in children?
Possible signs can include persistent tiredness, pale skin, poor growth, slow weight gain, mouth ulcers, bone pain or delayed walking. These features are nonspecific and can have nutritional or non-nutritional causes, so they should be assessed rather than treated automatically with supplements.
4. My child is a fussy eater. Should I be worried about nutritional deficiencies?
Fussy eating is common, particularly in toddlers, and does not automatically mean a child is lacking nutrients. What matters most is their overall diet, growth and development over time. If your child eats very few foods, avoids entire food groups or is losing weight, seek professional advice.
5. Which vitamins are most important for growing children?
Children need energy, protein, fats and a wide range of vitamins and minerals. Nutrients that may require particular attention include vitamin D, iron, calcium, vitamin B12 and iodine, depending on the child’s age, diet and medical circumstances.
6. Can too much vitamin D or iron be harmful?
Yes. Taking more than the recommended amount of vitamin D over time can cause harmful calcium build-up in the body. Iron supplements can also be dangerous if taken in excessive amounts and should always be kept out of children’s reach. Only give supplements as advised by a healthcare professional or according to UK guidance.
7. Do vegetarian or vegan children need extra supplements?
Vegetarian and vegan diets can support healthy growth when they are carefully planned. Children following a vegan diet need a dependable source of vitamin B12 through appropriately fortified foods, a suitable supplement or both. Vitamin D, calcium, iodine, iron, selenium, zinc, omega-3 fats, protein and overall energy intake may also need attention. Individual dietetic advice is particularly useful for babies and young children.
8. When should my child have blood tests for vitamin deficiencies?
Blood tests are usually recommended only if a child’s symptoms, growth pattern, medical history or diet suggest a possible deficiency. They may be used to check for iron deficiency, vitamin D deficiency, vitamin B12 deficiency, coeliac disease or other underlying conditions when clinically appropriate.
9. Are gummy vitamins better than liquid vitamin drops?
Not always. Gummy vitamins may contain added sugar and can be mistaken for sweets by young children. For children under five, choose an age-appropriate product containing the recommended vitamins A, C and D. The most suitable formulation depends on your child’s age, ability to take it safely and the doses provided.
10. When should I seek medical advice about my child’s nutrition?
Arrange an assessment if your child has poor growth, unexplained weight loss, persistent tiredness, pale skin, delayed development, difficulty eating, a highly restricted diet, frequent vomiting, ongoing digestive symptoms or if you are concerned they may not be getting enough nutrients. Early assessment can identify whether dietary changes, supplements or further investigations are needed.
Final Thoughts: Supporting Your Child’s Healthy Growth
Understanding whether your child is getting enough nutrients involves looking at their diet, growth, development, symptoms and any medical or feeding difficulties together. Most children obtain the majority of their nutrients through food, although UK vitamin recommendations still apply and some children need individual supplementation or dietetic support.
If you are concerned about your child’s growth, restricted eating, feeding difficulties or possible nutritional deficiencies, London Paediatric Clinic can provide a paediatric assessment and advise whether dietary changes, blood tests, dietetic support or supplements may be appropriate.
References:
- NHS (2024) Vitamins for children. Last reviewed 30 May 2024. Available at: https://www.nhs.uk/baby/weaning-and-feeding/vitamins-for-children/
- NHS (2022) The Eatwell Guide. Last reviewed 29 November 2022. Available at: https://www.nhs.uk/live-well/eat-well/food-guidelines-and-food-labels/the-eatwell-guide/
- NHS (2023) What to feed young children. Last reviewed 28 March 2023. Available at: https://www.nhs.uk/baby/weaning-and-feeding/what-to-feed-young-children/
- NHS (2026) The vegan diet. Last reviewed 5 June 2026. Available at: https://www.nhs.uk/live-well/eat-well/how-to-eat-a-balanced-diet/the-vegan-diet/
- NHS (2026) The vegetarian diet. Available at: https://www.nhs.uk/live-well/eat-well/how-to-eat-a-balanced-diet/the-vegetarian-diet/
- NHS (2026) Drinks and cups for babies and young children. Available at: https://www.nhs.uk/baby/weaning-and-feeding/drinks-and-cups-for-babies-and-young-children/
- NHS (no date) Vitamin D. Available at: https://www.nhs.uk/conditions/vitamins-and-minerals/vitamin-d/
- NHS (no date) Iron. Available at: https://www.nhs.uk/conditions/vitamins-and-minerals/iron/
- National Institute for Health and Care Excellence (NICE) (2017) Faltering growth: recognition and management of faltering growth in children. NICE guideline NG75. Available at: https://www.nice.org.uk/guidance/ng75
- Office for Health Improvement and Disparities (2024) Fortifying foods and drinks with vitamin D: main report. London: Department of Health and Social Care. Available at: https://www.gov.uk/government/publications/fortifying-food-and-drink-with-vitamin-d-a-sacn-rapid-review/fortifying-foods-and-drinks-with-vitamin-d-main-report