As part of my research identifying the best vegan supplements, I spoke with two nutritional experts who strongly agreed that appropriate supplementation is essential for those following a plant-based diet.
“While a well-planned vegan diet can offer many health benefits, certain nutrients are consistently harder to obtain without animal foods,” explains Kirsten Humphreys, nutritional therapist at Bare Biology. For those following a plant-based lifestyle, supplementation can therefore play an important supporting role.
Vogue’s top supplements for vegans at a glance:
However, choosing the right additions to your diet is no easy feat. The supplement market is a minefield, with an overwhelming quantity of brands, formulations and buzzy ingredients all vying for our attention, making it a challenge to find the one that will help maintain nutritional balance and prevent potential deficiencies.
Humphreys advises vegans look for “vitamin B12, zinc, vitamin D, iron, omega-3 fatty acids, iodine, vitamin A, choline and, in some cases, protein and calcium,” while stressing that any gaps should first be addressed through diet where possible. “Calcium, for example, can be found in foods such as tofu, sesame seeds and fortified plant milks. Beta-carotene, the precursor to vitamin A, is abundant in colourful fruits and vegetables.” Some vitamins, in particular B12, are not so straightforward to find in food – “as it is not naturally abundant in plant foods,” says the expert. She also says this is true of zinc, iron and omega-3 fatty acids, the latter of which “supports brain, heart and mental health, are also commonly low in people following vegan diets, as plant sources provide ALA, which the body converts poorly into EPA and DHA”.
Scroll on to find out which Vogue-approved formulas are worth incorporating into your diet. Always discuss with a healthcare practitioner to avoid excessive intake.
- Jump to the product reviews
- Which nutrients are most commonly deficient when following a vegan diet?
- Are supplements necessary for vegans?
- How do nutrient needs differ between new vegans and long-term vegans?
- Are plant-based supplements as bioavailable as non-vegan versions?
- Are there nutrients that should not be taken together?
- What red flags should consumers look for on supplement labels?
- Meet the experts
FAQs
Which nutrients are most commonly deficient when following a vegan diet?
“The most common nutritional deficiencies on vegan diets,” says Sophie Medlin, consultant dietician, “include vitamin B12, iron, calcium, iodine, vitamin D, zinc, selenium and omega-3.”
According to Kirsten Humphreys, nutritional therapist at Bare Biology, the challenge of ensuring a balanced diet while following a vegan lifestyle is that “there isn’t one single ‘vegan diet’ – approaches range from whole-food, plant-based diets to raw or fruitarian styles, as well as highly processed vegan diets that rely heavily on convenience foods. The less structured and less varied the diet, the higher the risk of nutrient shortfalls.”
This is even true of vegetarians. “Maintaining adequate B12 and iron levels can be difficult without conscious attention, reinforcing the importance of both dietary planning and targeted supplementation,” explains the expert. “Ultimately, a vegan diet can work well for some people, but it often requires more intention, education and support. Understanding where the nutritional gaps tend to arise and addressing them proactively is key to protecting long-term physical and mental health.”
Are supplements necessary for vegans?
“I’ve never seen anyone, either in my own life or clinically, be successful on a vegan diet long term without taking supplements,” reveals the nutritional therapist. “It can be very hard to get the levels of certain nutrients you need to stay optimally healthy through food alone. The need for supplements can also be influenced by the type of vegan diet someone follows. Highly processed, very high-carbohydrate vegan diets, often chosen for convenience, can increase the risk of nutrient gaps compared to more thoughtfully planned whole-food approaches.”
Medlin confirms this, “I would always recommend that someone following a vegan diet supplement appropriately. This will allow for the days when their diet isn’t optimised to its full potential, which is hard to achieve every day.”
How do nutrient needs differ between new vegans and long-term vegans?
The risk of deficiency increases over time, both experts agree. “For if someone was vegan for a month or if they followed a vegan diet a couple of days per week, they wouldn’t need to worry so much about nutritional deficiencies,” Medlin believes. “If you follow a vegan diet in the longer term, for example, for more than two months, then supplementation will be needed because the body’s stores of the nutrients listed above can become depleted and lead to health concerns. Furthermore, it is much easier to follow a very well-balanced vegan diet for a short period of time, but to be as conscious of all your nutritional needs every day over the long period as you need to be without supplements isn’t very practical.”
Humphreys stresses that it is very dependent on the person. “Some people may not feel great during the initial transition to a vegan diet. Often, that’s because fibre intake increases very quickly. If someone hasn’t been eating many fruits, vegetables, beans or lentils before, their digestion may not be prepared for that level of fibre.” While, longer term, she says, “There is also a higher risk of deficiencies in nutrients such as vitamin A, iodine, zinc and selenium, although selenium can be obtained from foods like Brazil nuts. Protein intake and protein quality can also become an issue if someone isn’t staying on top of it, as not all vegan foods contain all nine essential amino acids to make up a complete protein. Variety is key here.”
Are plant-based supplements as bioavailable as non-vegan versions?
Bioavailability, the experts agree, is down to the formulation and quality of the supplement, rather than if they are vegan or non-vegan. “If the ingredients in a vegan supplement are carefully chosen for optimum bioavailability, they will be just as effective as a non-vegan version in preventing and correcting nutritional deficiencies,” says Medlin.
Are there nutrients that should not be taken together?
To ensure that there is not over-supplementation or supplements that counteract each other, it is always best to check with a medical professional. However, Humpreys flags some combinations to steer clear of. “Minerals tend to compete with each other for absorption, so combinations like calcium with iron, calcium with zinc, or calcium with magnesium can interfere with uptake. Or vitamin C with B12, or vitamin E with vitamin K.” She believes in being selective. “For example, if someone is deficient in B12, I’d be more mindful about not taking very high doses of vitamin C at the same time (high folate can also mask low B12 symptoms). Similarly, if someone is trying to improve a specific mineral status or achieve a particular therapeutic effect, I’d be more careful about combining that mineral with other minerals in high doses. It’s also important to consider food interactions. Coffee and tea, for example, may impair iron absorption, so timing matters there, too.”
What red flags should consumers look for on supplement labels?
- Realistic claims: “Supplements should support health, not promise cures,” Humpreys warns. So look out for inflated claims.
- Ingredients: Medlin advises “Look for bulking agents, fillers and binding agents being high up on the ingredients lists and low levels of nutritions e.g. 15 per cent of the DRV. This tells us that you’re paying for something that hasn’t been thoughtfully formulated.” Humpreys also says to be aware of very long ingredient lists – “Overly complex formulas aren’t necessarily more effective and sometimes those extra ingredients can have side effects.”
- Transparency: “Consumers should be able to see evidence of third-party testing and feel confident that the brand is open about what’s in their products,” says Humpreys.
- Bioavailability: According to Medlin, “It’s also a good idea to look for methylated B vitamins in a product, as these are more bioavailable. When choosing an omega-3 supplement, look for one made from algae rather than seeds, as this will give the essential EPA and DHA needed from an omega-3 supplement, as opposed to ALA, which we get from plants, which isn’t as useful in the body.”
- Testing: Humpreys believes, “If a brand is making claims like clinically tested, they should be able to clearly back them up. Consumers should be able to see what was tested, how it was tested, and whether the evidence actually supports the claims being made for that product.”
Meet the experts
- Sophie Medlin, RD, is the head of nutritional research, consultant dietician and chair of the British Dietetic Association for London and founder of City Dieticians. She is also the head of nutrition at Heights
- Kirsten Humphreys is a nutritional therapist at Bare Biology