Best multivitamin UK (UK 2026)

The straightforward answer: if your diet is varied (includes fruits, vegetables, whole grains, lean proteins, and dairy or fortified plant alternatives), a multivitamin is optional insurance, not medical necessity. Clinical evidence does not support multivitamins for preventing chronic disease in well-nourished people. Large studies (like SELECT Trial 2022) show that multivitamins do not reduce cancer, heart disease, or premature mortality in generally healthy adults.

However, multivitamins make sense for specific groups. Pregnant women should supplement with a pregnancy-specific formulation (Pregnacare is the UK standard, containing folate 400mcg and iron). Women of childbearing age planning pregnancy should start folate supplementation 3 months before conception. Vegans and vegetarians should supplement B12 (mandatory) and consider iron if menstruating. Adults over 65 benefit from ensuring adequate vitamin D, B12, and calcium—a targeted formula or multivitamin is practical. People with diagnosed malabsorption (coeliac disease, Crohn's), restricted diets, or on medications affecting nutrient absorption (metformin, PPIs) should supplement based on specific deficiency risk.

For everyone else, the decision is personal: some people prefer the simplicity and cost certainty of a daily multivitamin (roughly £0.10-0.50 per day for decent brands) as nutritional insurance. Others prefer to optimize diet and supplement targeted nutrients only when needed. Neither choice is 'wrong'—it depends on your preference, diet consistency, and budget.

Not all vitamin and mineral forms are equally absorbed. Vitamin D3 (cholecalciferol) is better absorbed than D2. Iron as ferrous fumarate or Iron amino acid chelate (bisglycinate) is better absorbed than ferric forms, and absorption is enhanced by vitamin C. Calcium citrate is absorbed better than carbonate (especially if you take PPIs). These differences matter, particularly for people with absorption issues or specific deficiency risk.

Most UK multivitamins use reasonably bioavailable forms because cheap forms would result in poor reviews and returns. However, the best multivitamins specify forms on the label (e.g., 'magnesium citrate,' 'vitamin D3,' 'iron bisglycinate'). If a product lists only 'iron' or 'magnesium' without specifying form, contact the brand—vague labeling often indicates cheaper, less bioavailable forms.

One rule of thumb: higher cost does not always mean better absorption. A £0.15 per day multivitamin with specified forms often performs as well as a £0.50 daily option. Brand reputation, review consistency, and clear labeling matter more than premium pricing. Avoid multivitamins that are suspiciously cheap (under £0.05 per day)—they likely use fillers and poorly absorbed mineral forms.

Many UK multivitamins include iron (typically 8-14 mg daily), and many people worry this is dangerous for men and older women (post-menopausal) who don't need iron supplementation. The concern is valid: excess iron can oxidize cells and contribute to cardiovascular disease and cognitive decline if chronically elevated. However, the amount in standard multivitamins is modest and unlikely to cause problems in healthy people with normal iron stores.

The reality: men of any age and post-menopausal women do not need iron supplementation unless they have diagnosed deficiency (low ferritin, low hemoglobin). If you fall into this category, choose a men's or women 50+ multivitamin specifically formulated without iron (e.g., Wellman or Wellwoman ranges). Menstruating women, vegans, and anyone with absorption issues should choose a multivitamin that includes iron (or supplement iron separately).

If you are unsure whether you need iron, ask your GP for a ferritin test. It is inexpensive (NHS will do it if your doctor agrees), and the result clarifies whether supplementation makes sense. Many people assume they are iron-deficient based on fatigue alone—ferritin testing prevents unnecessary supplementation.

Pregnacare (UK brand) is the most evidence-backed pregnancy multivitamin, specifically designed with folate 400mcg, iron, iodine, and other nutrients for fetal development. Most UK healthcare providers recommend Pregnacare or an equivalent pregnancy-specific multivitamin for all pregnant women. Do not use a standard multivitamin during pregnancy—pregnancy formulations are specifically dosed and balanced for fetal safety.

Women over 50 have distinct needs: reduced estrogen means reduced iron absorption, but increased bone health concerns (calcium and vitamin D become priorities). Wellwoman 50+ and Life Extension Two Per Day Women 50+ are both solid options designed with this in mind. Men over 50 similarly benefit from specific formulations emphasizing heart health (CoQ10, magnesium) and prostate support. Wellman 50+ is the UK market leader here.

Adults over 65 (regardless of sex) should prioritize vitamin D (at least 10 mcg, preferably 20 mcg daily), B12 (1000 mcg weekly or 2500 mcg daily), and calcium (1000-1200 mg daily). Most general multivitamins do not provide adequate calcium in one tablet (calcium is bulky), so you may need separate calcium supplementation. A practical approach: standard multivitamin plus separate calcium (1000 mg daily) and vitamin D (20 mcg) if diet is not adequate.