Vitamin D contributes to normal bones, muscle function and immune health. Buy D3 from 400 IU to 5000 IU as capsules, tablets, gummies, sprays and drops, including vegan D3 and combined D3 and K2 formulas.
Choosing vitamin D usually comes down to three questions: how much to take in winter, whether D3 or D2 is better, and whether to add K2. The NHS suggests 10 mcg (400 IU) a day in autumn and winter. If you take more than one supplement, check the labels so the totals don't add up to more than you meant.
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Vitamin D is an essential nutrient that helps your body absorb calcium and maintain healthy bones, teeth and muscles. Low vitamin D levels may also leave you feeling tired or low in energy. Explore our range of vitamin D supplements, including D3 capsules, tablets, sprays and drops.
The NHS advises that everyone should consider taking a daily supplement containing 10 micrograms (400 IU) of vitamin D during the autumn and winter, when the sun is not strong enough for the body to make it. Do not take more than 100 micrograms (4,000 IU) a day, as it could be harmful. Explore our range of D3 supplements, from 400 IU to 5000 IU.
D2 comes from plant or fungal sources, while D3 is the form your skin makes from sunlight. Both raise vitamin D levels, and some studies suggest D3 may do so more effectively. Explore our range of D3 supplements, including vegan options.
K2 is often combined with D3 in one product, though the two don't have to be taken together. Vitamin K can interact with blood-thinning medicines such as warfarin, so check with a pharmacist or GP first if you take one. Explore our range of combined D3 and K2 capsules, tablets, sprays and gummies.
A lack of vitamin D can lead to bone pain in adults and bone deformities such as rickets in children, and some people may also feel tired or low in energy. These symptoms have many possible causes, so speak to a GP or pharmacist rather than guessing. Explore our range of vitamin D supplements in capsules, tablets, gummies, sprays and drops.
