HPDC Nutrition

Vitamin guide

Vitamin B7 (biotin)

Biotin, also known as vitamin B7, is needed in very small amounts. Here is what it does and what the NHS says about it.

What it does


  • Helps the body make fatty acids

Good food sources


  • Biotin is found in a wide range of foods, but only at low levels
  • The bacteria that live naturally in your bowel also make biotin

How much do adults need?


No daily amount has been set in the UK. Because the body’s own gut bacteria make biotin, it is not clear whether you need any extra from your diet. A varied, balanced diet gives most people all they need.

Good to know


  • Taking 0.9 mg or less a day of biotin from supplements is unlikely to cause any harm.

From our shop


Browse our vitamins and food supplements. Each product page lists its ingredients and how to use it.

Source: NHS, Vitamins and minerals. This information is not medical advice. Food supplements should not replace a varied, balanced diet and a healthy lifestyle. If you are pregnant, breastfeeding, taking medicines or have a health condition, speak to your GP or pharmacist before taking a supplement. Questions? Contact us.

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