Why smart supplementation is about targeting the right gaps, not covering everything at once
As a vegan parent, you want to make sure your child is getting everything they need to grow, thrive and stay healthy — and you're doing it on your own terms, without compromising your family's values. It's a completely natural instinct — and the supplement industry knows it. Walk into any health store or browse online and you'll find products boasting dozens of nutrients, long ingredient lists, and impressive-sounding percentages. More must be better, right?
Not necessarily. In fact, when it comes to children's nutrition — and especially vegan children's nutrition — precision matters far more than quantity. Understanding which nutrients vegan kids are genuinely likely to be missing — and which ones they're probably getting plenty of — is the key to making smart supplementation decisions for your family.
What the research actually tells us
Multiple large-scale nutritional surveys consistently highlight the same handful of nutrients that children following plant-based diets tend to fall short on. These aren't obscure micronutrients — they're vitamins and minerals that play foundational roles in your child's development, yet are surprisingly difficult to obtain in adequate amounts from a wholly plant-based diet alone.
The most commonly deficient nutrients in vegan children include Vitamin D, Zinc, Vitamin C, Biotin, and certain B vitamins like B6 and B12. Let's look at why.
Vitamin D is perhaps the most well-documented deficiency in children worldwide — and the risk is even greater for vegan kids. The most bioavailable dietary sources of Vitamin D are oily fish and eggs, neither of which feature in a plant-based diet. While fortified plant milks help, they rarely provide enough on their own, making supplementation particularly important for vegan children.
Zinc is critical for immune function, healthy growth, wound healing and cognitive development. In omnivore diets, it is obtained primarily from shellfish and red meat. For vegan children, plant-based sources like legumes, seeds and wholegrains do contain zinc, but also contain phytates — compounds that actually inhibit zinc absorption. This means vegan kids may need more dietary zinc than their omnivore peers to achieve the same absorption levels, making a reliable supplement source especially valuable.
Biotin (B7) supports healthy hair, skin and nail development — all of which are in a state of rapid growth during childhood. While Biotin is found in nuts, seeds and wholegrains — all staples of a vegan diet — the amounts required for optimal development in growing children are difficult to consistently achieve through food alone, particularly for younger, pickier eaters.
Vitamin B6 plays a key role in brain development and energy metabolism. Although B6 is present in many plant foods including chickpeas, potatoes and bananas, bioavailability from plant sources is lower than from animal sources, meaning vegan children may absorb less even when dietary intake appears adequate.
Vitamin B12 deserves a special mention for vegan families. B12 is found almost exclusively in animal products, making it one of the most critical nutrients to supplement for anyone following a plant-based diet — children included. Deficiency in growing children can have serious consequences for neurological development, making consistent B12 supplementation non-negotiable for vegan kids.
Vitamin C is generally well-supplied in a varied plant-based diet rich in fruits and vegetables. However, children who are picky eaters or whose fresh produce consumption drops in winter months may still fall short — and Vitamin C also plays an important role in enhancing iron absorption from plant sources, making it doubly important for vegan children.
The nutrients most vegan kids are probably getting enough of
Here's where it gets interesting — and where the "more is better" approach to supplements can actually become unnecessary, or in some cases counterproductive.
Calcium is often a concern raised about plant-based diets, but vegan families who are thoughtful about their food choices are typically well-covered. Fortified plant milks, tofu, leafy greens like kale and pak choi, almonds and fortified cereals all provide meaningful amounts of calcium. A vegan child eating a reasonably varied diet is likely meeting their calcium needs without requiring large doses of supplemental calcium on top.
Magnesium is actually one area where a well-planned vegan diet tends to shine. It is abundant in wholegrains, legumes, nuts, seeds, dark chocolate and leafy greens — all foods that feature prominently in plant-based eating. Deficiency in vegan children eating a varied diet is relatively uncommon.
Niacin (B3) is present in mushrooms, peanuts, wholegrains and fortified foods — all accessible within a plant-based diet. Unless a child has an extremely restricted diet, Niacin deficiency is rare among vegan children in developed countries.
This doesn't mean these nutrients aren't important — they absolutely are. It simply means that for most vegan children eating a reasonably balanced plant-based diet, food is already doing the job, and supplementation adds little additional value.
What this means for how you choose a supplement
The ideal supplement for vegan children isn't the one with the longest ingredient list. It's the one that thoughtfully targets the genuine gaps — the nutrients that a plant-based diet reliably under-delivers — while being entirely free from animal-derived ingredients, of course.
When evaluating any supplement for your vegan child, ask yourself: is this product genuinely vegan, including the capsule or gummy base? Does it prioritise the nutrients that plant-based diets are most likely to fall short on? Are the doses age-appropriate rather than simply maximum? And is the science behind the formulation current and evidence-based?
At Terraseed, these are the exact questions that guided our latest SFL Kids Gummies update. As a brand created by and for vegan families, we understand the specific nutritional landscape of raising plant-based children — because we live it too. We took a hard look at the research, identified where vegan children genuinely need support, and built a formula around those specific needs — boosting nutrients like Biotin, Zinc, Vitamin C, B6 and B12 where the evidence is strongest, while streamlining ingredients that most plant-based children already obtain adequately through their everyday diet.
Because giving your child what they actually need, in the right amounts, from a product that aligns with your family's values — that will always be more meaningful than simply giving them everything.