Proteins

Plant protein powder

Also called: pea protein, soy protein, rice protein, vegan protein

Protein from peas, soy, rice or a blend.

Why people take it
Protein for vegetarians and vegans.
What the evidence says
Blends work about as well as whey when enough is taken.
How it is usually taken
Usually 20 to 40 g per serving (pea, rice, soy or blends). Choose brands tested for heavy metals.
Be careful
Some rice and pea products have tested high in heavy metals; choose third-party tested brands.
Medicines it can interact with
Soy protein may reduce levothyroxine absorption; separate doses.

Other proteins

Common questions

What is Plant protein powder?

Protein from peas, soy, rice or a blend.

Why do people take Plant protein powder?

Protein for vegetarians and vegans.

Does Plant protein powder work?

Blends work about as well as whey when enough is taken.

How much Plant protein powder do people take?

Usually 20 to 40 g per serving (pea, rice, soy or blends). Choose brands tested for heavy metals.

Is Plant protein powder safe?

Some rice and pea products have tested high in heavy metals; choose third-party tested brands.

Does Plant protein powder interact with medicines?

Soy protein may reduce levothyroxine absorption; separate doses.

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.