Potassium

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Potassium is a mineral found in most types of food. Good sources of potassium include fruit (such as bananas), vegetables, pulses, nuts and seeds, milk, fish, shellfish, beef, chicken, turkey and bread.

You should be able to get all the potassium you need by eating a varied and balanced diet. But if you decide to take potassium supplements it's a good idea not to take too much because this could be harmful. Taking 3700 mg or less of potassium supplements a day is unlikely to cause any harm. However, older people may be more at risk of harm from potassium. This is because, as we get older, our kidneys may become less able to remove potassium from our blood. Therefore, older people shouldn't have potassium supplements unless on medical advice.