The Vitamins Kids Actually Need: a Parent's Guide by Age

If you've ever stood in the supplement aisle wondering whether your child actually needs a multivitamin, or which one, you're in good company. Most healthy kids who eat a reasonably varied diet get the nutrients they need from food alone. But "reasonably varied" does a lot of heavy lifting in that sentence, especially if your household includes a child who considers plain pasta a food group. This guide breaks down the vitamins and minerals that matter most for growing bodies, what the recommended amounts look like at every age, and how to tell whether a supplement might be a smart addition to your child's routine. This guide summarizes the key points a pediatrician might cover.

Do kids really need vitamins?

The answer depends on your child.

Children who eat a balanced diet rich in fruits, vegetables, whole grains, dairy or fortified alternatives, and protein generally meet their nutritional needs through food. Pediatric nutrition guidelines emphasize a food-first approach because whole foods provide nutrients in combinations that work together, such as fiber alongside iron and healthy fats that help absorb vitamins A, D, E, and K.

That said, real life rarely looks like a textbook meal plan. There are several situations where a children's supplement can help fill gaps:

• Picky eaters who consistently refuse entire food groups, especially vegetables.
• Kids on restricted diets, whether due to food allergies, lactose intolerance, or a vegetarian or vegan lifestyle, who may fall short on vitamin B12, iron, calcium, or zinc.
• Children with absorption issues related to conditions like celiac disease or inflammatory bowel disease.
• Kids who drink little or no fortified milk and get limited sun exposure, which can make it hard to reach adequate vitamin D levels. The NIH notes that vitamin D is difficult for many people to obtain from food alone, including children.^[1]

If your child doesn't fall into one of these categories and genuinely eats a variety of foods most days, a multivitamin is not strictly necessary. But if dinnertime is a nightly negotiation, a well-formulated children's multivitamin can be a reasonable nutritional safety net, not a replacement for good food. Talk to your pediatrician about your child's specific diet before starting any supplement. If you do choose one, look for a product designed for kids with age-appropriate doses. OLLY's kids formulas are made with age-appropriate dosing and child-friendly flavor to help make consistent use easier for families.

Essential Nutrients for Kids by Age

Growing bodies have specific nutritional demands that shift as children move from toddlerhood through adolescence. Below is a look at the key vitamins and minerals pediatric experts focus on, followed by a consolidated table of recommended daily amounts.

Vitamin A

Vitamin A is important for vision, immune function, and cell growth. Most kids can get enough from orange and yellow vegetables, eggs, and fortified dairy products.^[2]

Vitamin C

This antioxidant vitamin helps with tissue repair, wound healing, and iron absorption. Citrus fruits, strawberries, bell peppers, and tomatoes are all good sources. The NIH recommends that children aged 1–3 get 15 mg per day, increasing to 25 mg for ages 4–8 and 45 mg for ages 9–13.^[3]

Vitamin D

Vitamin D is essential for calcium absorption and bone development. Because few foods naturally contain significant vitamin D, many children, especially those living in northern climates or spending most of their time indoors, may not get enough. The recommended amount for children aged 1–18 is 600 IU (15 mcg) daily.^[1]

Vitamin E

Vitamin E acts as an antioxidant, protecting cells from damage. Nuts, seeds, and vegetable oils are the richest food sources. According to the NIH, children aged 1–3 need 6 mg daily, rising to 7 mg for ages 4–8 and 11 mg for ages 9–13.^[4]

Vitamin K

Vitamin K is involved in blood clotting and bone metabolism. Leafy greens like spinach, kale, and broccoli are top sources. The NIH notes that adequate intake for children ranges from 30 mcg per day for toddlers up to 60 mcg for kids aged 9–13.^[5]

B Vitamins

The B-vitamin family, including thiamin (B1), riboflavin (B2), niacin (B3), B6, folate (B9), and B12, is involved in energy production, brain development, and red blood cell formation.

• Thiamin: 0.5 mg (ages 1–3) to 0.9 mg (ages 9–13) ^[6]
• Riboflavin: 0.5 mg to 0.9 mg across the same age range ^[7]
• Niacin: 6 mg to 12 mg ^[8]
• Vitamin B6: 0.5 mg to 1.0 mg ^[9]
• Folate: 150 mcg DFE to 300 mcg DFE ^[10]
• Vitamin B12: 0.9 mcg to 1.8 mcg ^[11]

Children following plant-based diets should receive extra attention here, since B12 is found almost exclusively in animal-derived foods and fortified products.

Calcium

Calcium is the primary building block of bones and teeth. Kids build the majority of their bone mass before age 18, making childhood intake especially important. The NIH recommends 700 mg daily for ages 1–3, 1,000 mg for ages 4–8, and 1,300 mg for ages 9–18. Dairy products, fortified plant milks, and leafy greens are reliable sources.^[12]

Iron

Iron carries oxygen through the blood and supports cognitive development. Toddlers and adolescent girls are at the highest risk for deficiency. The NIH states that children aged 1–3 need 7 mg per day, ages 4–8 need 10 mg, and ages 9–13 need 8 mg. Red meat, beans, fortified cereals, and spinach are dietary sources.^[13]

Zinc

Zinc supports immune function, wound healing, and normal growth. According to the NIH, the recommended daily amount is 3 mg for ages 1–3, 5 mg for ages 4–8, and 8 mg for ages 9–13.^[14]

Nutrient Requirements Table by Age

Sources: NIH Office of Dietary Supplements fact sheets (linked above by nutrient).

Gummies vs. tablets: what's better for kids?

Gummies dominate the children's supplement aisle because they are easier for many children to take than tablets. But format matters beyond taste. Here's what to consider.

Absorption

Both gummies and tablets can deliver nutrients effectively when formulated properly. Gummies sometimes contain slightly lower amounts of certain minerals, like iron and calcium, because those ingredients are harder to incorporate into a gummy without affecting taste and texture. Read the Supplement Facts panel rather than assuming all multivitamins are identical.

Sugar Content

Gummies contain some sugar to achieve a palatable taste. Most quality children's gummies contain about 2–3 grams of added sugar per serving, roughly the amount in a few blueberries. If your child needs strict sugar control, consult your pediatrician, but for most children, the small amount of sugar in a gummy vitamin is not a nutritional concern.

Dosing and Safety

Store gummies out of reach. Overconsumption of gummy vitamins, particularly those containing fat-soluble vitamins (A, D, E, K) or iron, can be harmful. Always follow the serving size on the label and treat supplements as health products, not snacks.

Chewable Tablets

Chewable tablets are an alternative to gummies. They typically contain no added sugar and can include higher amounts of minerals, but taste and texture vary by product. The best format is the one your child will take consistently.

Why Parents Are Choosing Multi + Probiotic

One trend among parents is combining a multivitamin and a probiotic to reduce the number of separate products they give their child.

OLLY Kids Multi + Probiotic combines essential vitamins and minerals, including vitamins A, C, D, E, zinc, and B vitamins, with a probiotic strain to support digestive health, in one gummy.^[15] For children with occasional digestive symptoms alongside nutritional gaps, a combined product reduces the number of supplements used. OLLY's product combines nutrients and a probiotic in a single gummy.

Not every child needs probiotic support. If you want a straightforward multivitamin, OLLY Kids Multi Worms covers core nutrients without a probiotic.^[16] For families managing sleep issues, OLLY Kids Melatonin Free Sleep offers a drug-free option, since adequate sleep benefits children and families.^[17]

The Bottom Line

Children need a core set of vitamins and minerals to grow, learn, and stay healthy, and ideally, they would get these from a colorful, balanced plate. In practice, a children's multivitamin can be a helpful safety net for picky eaters, kids on restricted diets, or families who want extra peace of mind. Focus on food first, choose an age-appropriate supplement if needed, and consult your pediatrician before changing your child's routine.

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

References

1. National Institutes of Health, Office of Dietary Supplements. Vitamin D: Fact Sheet for Consumers. https://ods.od.nih.gov/factsheets/VitaminD-Consumer/
2. National Institutes of Health, Office of Dietary Supplements. Vitamin A: Fact Sheet for Consumers. https://ods.od.nih.gov/factsheets/VitaminA-Consumer/
3. National Institutes of Health, Office of Dietary Supplements. Vitamin C: Fact Sheet for Consumers. https://ods.od.nih.gov/factsheets/VitaminC-Consumer/
4. National Institutes of Health, Office of Dietary Supplements. Vitamin E: Fact Sheet for Consumers. https://ods.od.nih.gov/factsheets/VitaminE-Consumer/
5. National Institutes of Health, Office of Dietary Supplements. Vitamin K: Fact Sheet for Consumers. https://ods.od.nih.gov/factsheets/VitaminK-Consumer/
6. National Institutes of Health, Office of Dietary Supplements. Thiamin: Fact Sheet for Consumers. https://ods.od.nih.gov/factsheets/Thiamin-Consumer/
7. National Institutes of Health, Office of Dietary Supplements. Riboflavin: Fact Sheet for Consumers. https://ods.od.nih.gov/factsheets/Riboflavin-Consumer/
8. National Institutes of Health, Office of Dietary Supplements. Niacin: Fact Sheet for Consumers. https://ods.od.nih.gov/factsheets/Niacin-Consumer/
9. National Institutes of Health, Office of Dietary Supplements. Vitamin B6: Fact Sheet for Consumers. https://ods.od.nih.gov/factsheets/VitaminB6-Consumer/
10. National Institutes of Health, Office of Dietary Supplements. Folate: Fact Sheet for Consumers. https://ods.od.nih.gov/factsheets/Folate-Consumer/
11. National Institutes of Health, Office of Dietary Supplements. Vitamin B12: Fact Sheet for Consumers. https://ods.od.nih.gov/factsheets/VitaminB12-Consumer/
12. National Institutes of Health, Office of Dietary Supplements. Calcium: Fact Sheet for Consumers. https://ods.od.nih.gov/factsheets/Calcium-Consumer/
13. National Institutes of Health, Office of Dietary Supplements. Iron: Fact Sheet for Consumers. https://ods.od.nih.gov/factsheets/Iron-Consumer/
14. National Institutes of Health, Office of Dietary Supplements. Zinc: Fact Sheet for Consumers. https://ods.od.nih.gov/factsheets/Zinc-Consumer/
15. OLLY. Kids Multi + Probiotic. https://olly.com/products/kids-multi-probiotic
16. OLLY. Kids Multi Worms. https://www.olly.com/products/kids-multi-worms
17. OLLY. Kids Melatonin Free Sleep. https://www.olly.com/products/kids-melatonin-free-sleep