Adopting a vegan diet can be a powerful decision — for health, for animals, for the planet.
But cutting out all animal products also means cutting out some of the most concentrated sources of essential nutrients. That doesn’t mean veganism is unhealthy — far from it — but it does require more awareness around what your body actually needs.
The truth is: no matter how well-planned your plant-based diet is, there are some nutrients that are difficult or nearly impossible to get from food alone. That’s where smart supplementation comes in.
Here’s a look at the most important supplements to consider if you eat fully plant-based.
1. Vitamin B12
Let’s start with the non-negotiable!
Vitamin B12 is essential for nerve function, DNA production, and red blood cells. It’s not found in plant foods, except in unreliable traces (e.g. certain algae or fortified foods).
Why you need it:
Deficiency can lead to fatigue, nerve damage, and long-term cognitive decline.
How to take it:
Choose a methylcobalamin or cyanocobalamin supplement — 250–500 mcg a few times a week is often enough, or take a lower dose daily.
2. Omega-3 (DHA + EPA)
Plant foods like flax and chia contain ALA (a precursor to omega-3), but conversion into DHA and EPA is very low — sometimes under 5%. These long-chain omega-3s are crucial for brain health, heart function, and reducing inflammation.
Why you need it:
Low DHA/EPA levels have been linked to mood disorders, dry skin, poor recovery, and long-term cognitive decline.
How to take it:
Choose a vegan algae-based omega-3 supplement that provides 250–500 mg combined DHA + EPA per day.
3. Vitamin D
Most people in the Nordics are already low in vitamin D, and vegans are especially at risk. It supports immune function, hormone balance, and calcium absorption.
Why you need it:
Low levels are linked to fatigue, low mood, and poor bone health.
How to take it:
Take 1000–2000 IU of vitamin D3 daily — ideally a vegan D3 sourced from lichen (not the cheaper D2 version, which is less effective).
4. Iron (in some cases)
Plant-based iron (non-heme) is less absorbable than heme iron from animal foods. Many vegans get enough from legumes, tofu and leafy greens — but some, especially menstruating women, may still fall short.
Why you need it:
Iron deficiency causes tiredness, poor concentration, and low immunity.
How to take it:
Get bloodwork before supplementing. If low, choose gentle iron bisglycinate and take it with vitamin C, away from calcium and coffee.
5. Zinc
Zinc is harder to absorb from plant sources due to phytates, which block mineral absorption. It’s crucial for skin, immune function, and hormones.
Why you need it:
Low zinc can lead to more frequent colds, skin issues, and slow wound healing.
How to take it:
Consider 10–15 mg per day — ideally zinc picolinate or bisglycinate, which are more bioavailable.
6. Iodine
Seafood and dairy are the main iodine sources in many diets. Iodine supports thyroid function and metabolism — and deficiency is common in Nordic countries regardless of diet.
Why you need it:
Too little iodine can lead to fatigue, low metabolism, and thyroid issues.
How to take it:
If you don’t eat iodised salt or seaweed, supplement with 150 mcg iodine a few times per week. Be careful not to exceed 300 mcg daily.
7. Calcium
It’s possible to get enough calcium from tofu, fortified plant milks, almonds and leafy greens — but many vegans still fall short.
Why you need it:
Calcium is essential for bone health, muscle contraction, and nerve signalling.
How to take it:
Aim for 1000–1200 mg daily from food + supplements combined. If supplementing, don’t combine it with iron — they compete for absorption.
8. Creatine (optional but smart)
Creatine isn’t “essential” in the strictest sense, but it’s found only in animal products — and it improves strength, memory, and energy levels.
Why you might want it:
Studies show vegans and vegetarians benefit more from creatine supplementation than meat eaters.
How to take it:
3–5 g of creatine monohydrate per day is safe and effective.
9. Taurine (optional)
Taurine is a compound involved in hydration, digestion, and heart function — and while the body can make some, levels are lower in vegans.
Why you might want it:
Emerging research suggests taurine supports longevity, especially as we age.
How to take it:
Supplement with 500–1000 mg daily — especially if you’re active or under stress.
Our thoughts…
A vegan diet can absolutely support long-term health — but only if it’s supported by good planning and smart supplementation.
Taking the right supplements isn’t a failure. It’s simply acknowledging that we evolved with certain nutrients from animal sources — and when we remove those, we need to replace them with intention.
It’s not about being perfect. It’s about being informed.
And that’s always the most sustainable choice.
