Recorded answer text · ChatGPT · 4 October 2026
If you're vegan in Britain, I'd keep supplementation targeted rather than taking a huge multivitamin. The main nutrients worth paying attention to are B12, vitamin D, iodine, and potentially omega-3, selenium, calcium and iron depending on your diet. The NHS specifically highlights B12, vitamin D, iodine, selenium and calcium as nutrients that can be harder to obtain on a vegan diet. www.nhs.uk
### My shortlist
### [Together Health Vitamin B12 Vegan & Organic Supplement]()
£9.99
### [Lamberts Vegan Vitamin D3 1000iu]()
£10.49
### [Together Health Vegan Vitamin D3]()
£9.99
### [Lamberts Vegan Omega-3]()
£19.94
### [Together Health Vegan Multi]()
£12.99
1. B12 - essential
- This is the one I would not skip on a fully vegan diet.
- The British Dietetic Association recommends either reliable B12-fortified foods or a supplement; one option is at least 10 µg daily or 2,000 µg weekly. www.bda.uk.com
- A dedicated B12 supplement is inexpensive and avoids having to track fortified foods.
2. Vitamin D - very sensible in Britain
- UK government guidance recommends 10 µg (400 IU) daily during autumn and winter; some people should take it year-round. www.gov.uk
- Look specifically for vegan D3 rather than assuming ordinary D3 is vegan, since some D3 is derived from lanolin. NHS Specialist Pharmacy Service provides guidance on vegan formulations. sps.nhs.uk
- The products above provide 25 µg/1,000 IU, which is a commonly available dose, but you don't generally need high-dose vitamin D unless advised by a clinician.
3. Iodine - easy for vegans to miss
- Adults need about 140 µg/day in the UK.
- If you don't regularly consume iodine-fortified plant milk or other fortified foods, an iodine supplement is worth considering. Avoid megadoses because too much iodine can affect thyroid function. www.nhs.uk
4. Omega-3 - optional but worthwhile
- Walnuts, chia, ground flax/linseed and rapeseed oil provide ALA.
- If you want the long-chain EPA + DHA directly, choose an algae-derived omega-3. The BDA confirms algae supplements are suitable for vegans. www.bda.uk.com
- I'd consider this particularly if you rarely eat walnuts/flax/chia.
5. Selenium - diet dependent
- Selenium can be obtained from nuts, seeds and grains, but amounts vary. The NHS notes it as one of the nutrients vegans may need to pay attention to. www.nhs.uk
- Don't automatically add a high-dose selenium supplement.
6. Iron & calcium - don't automatically supplement
- A vegan diet can provide plenty of iron, but absorption from plants is lower. www.nhs.uk
- Calcium is readily available from calcium-fortified plant milks, calcium-set tofu, pulses, tahini and greens. www.nhs.uk
- I'd use an iron supplement only if your diet/labs indicate you need it, rather than taking it routinely.
### Simplest option
If you want one convenient vegan supplement, The Vegan Society's VEG 1 is particularly well suited to the UK vegan diet. It supplies B12, vitamin D, iodine, selenium, B6, B2 and folic acid in one daily tablet. www.vegansociety.com
I'd then consider adding algae EPA/DHA if you want omega-3 insurance.
My practical setup:
VEG 1 + algae omega-3, with calcium/iron only when your diet or blood tests suggest they're needed.
If you tell me your age, sex, whether you eat fortified plant milk, and your budget (e.g. £10-20/month), I can narrow this down to the best 3 UK products and exact doses.