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Potassium is one of the most important minerals in our body, working alongside sodium and chlorine to form 'electrolytes' that transmit messages and look after the balance of liquids in the cells.


Potassium gets involved in many aspects of physiology - nerve conduction, nerve function, heartbeat, energy production, synthesis of proteins, muscle action and the well-being of every cell in the body.

Deficiency Symptoms

Marginal deficiencies may be asymptomatic but may increase the risk of high blood pressure . More severe will carry symptoms of constipation, muscle cramps and muscle weakness, poor reflexes, reduced concentration, heart arrhythmias and rarely heart failure.

At a Glance...

Potassium plays a role in many aspects of a healthy body.

Functions Dosage Toxicity Further Information What you need to eat
Potassium works closely with Sodium and Chloride to maintain cellular fluid balance and electrical potentials across the membranes. This is important in nerve transmission, muscle contraction and heart beat.
The RDA is 3.5 g per day. The body's balance of potassium and sodium need to be carefully controlled and supplements should only be taken under supervision.
Acute toxicity may include heart failure and could be the result of kidney failure.
The balance of Potassium and Sodium can be upset by excessive sweating or diarrhoea or the chronic use of diuretics.
Found in fresh fruit, particularly citrus fruits and bananas. Also in vegetables, particularly potatoes and lean meats.

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