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A brief guide to vitamin and mineral supplements – when too much of a good thing can become toxic

By Dipa Kamdar, Senior Lecturer in Pharmacy Practice, Kingston University

Around half of UK adults currently take a food supplement – but vitamins and minerals are usually only needed in small amounts and too much of a good thing can be bad for you.

Here’s what you need to know about the benefits and risks of some of the most common vitamins and minerals.

Vitamin A

Vitamin A aids the immune system in fighting off infections,…

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