Vitamin B1 (thiamin)
Thiamin, also known as vitamin B1, is one of the B vitamins. Here is what it does, where it is found in food and how much adults need, based on NHS guidance.
What it does
- Helps the body break down and release energy from food
- Helps keep the nervous system healthy
Good food sources
- Peas
- Some fresh fruit, such as bananas and oranges
- Nuts
- Wholegrain breads
- Some fortified breakfast cereals
- Liver (avoid liver if you are pregnant)
How much do adults need?
Adults aged 19 to 64 need about 1 mg a day (men) and 0.8 mg a day (women). Thiamin cannot be stored in the body, so you need it in your diet every day. Most people get enough from a varied diet.
Good to know
- Taking 100 mg or less a day of thiamin 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.
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Children’s Elderberry, Echinacea & Rose Hip Tincture – Organic & Alcohol Free
£11.99 £71.99Price range: £11.99 through £71.99 Availability: In StockView options This product has multiple variants. The options may be chosen on the product page -
Evening Primrose Oil 1000mg 95 Capsules – Cold-Pressed Natural Source of GLA
£7.95 Availability: In Stock -
Evening Primrose Oil 1000mg 125 Capsules – Cold-Pressed Natural Source of GLA
£8.95 Availability: In Stock -
Premium Cod Liver Oil 1000mg 95 Capsules – Omega-3 with Vitamins A & D
£5.45 Availability: In StockView options This product has multiple variants. The options may be chosen on the product page
More vitamin guides
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.