Minerals

Phosphorus

Also called: phosphate

A mineral in bones, teeth and energy molecules.

Why people take it
Rarely needed as a supplement.
What the evidence says
Most diets have plenty.
How it is usually taken
Rarely needed as a supplement; dairy, meat and pulses supply plenty. Prescription phosphate is used for low levels.
Be careful
Too much harms people with kidney disease and can weaken bones.
Medicines it can interact with
Antacids with aluminium or calcium bind phosphate. People with kidney disease must avoid extra phosphorus.

Other minerals

Common questions

What is Phosphorus?

A mineral in bones, teeth and energy molecules.

Why do people take Phosphorus?

Rarely needed as a supplement.

Does Phosphorus work?

Most diets have plenty.

How much Phosphorus do people take?

Rarely needed as a supplement; dairy, meat and pulses supply plenty. Prescription phosphate is used for low levels.

Is Phosphorus safe?

Too much harms people with kidney disease and can weaken bones.

Does Phosphorus interact with medicines?

Antacids with aluminium or calcium bind phosphate. People with kidney disease must avoid extra phosphorus.

Sources and further reading

Last reviewed 31 October 2026. Written by Satya Babu.

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For information only, not medical advice. Supplements are not medicines: they are not tested and approved like drugs before they are sold, and they can interact with medicines. Talk to your doctor or pharmacist before you start one, especially if you are pregnant or breastfeeding, take regular medicines, or have kidney, liver or heart disease.