Proteins

Chlorella

Also called: chlorella

A green freshwater alga sold as tablets or powder.

Why people take it
Detox, nutrition, immunity.
What the evidence says
Little good-quality evidence; "detox" claims are not proven.
How it is usually taken
Usually 2 to 10 g a day.
Be careful
Contains vitamin K (affects warfarin). Can cause stomach upset and sun sensitivity.
Medicines it can interact with
Contains vitamin K, which can reduce the effect of warfarin. May affect immune-suppressing medicines.

Other proteins

Whey proteinCasein proteinPlant protein powderEgg white proteinHMBGelatinSpirulina

Common questions

What is Chlorella?

A green freshwater alga sold as tablets or powder.

Why do people take Chlorella?

Detox, nutrition, immunity.

Does Chlorella work?

Little good-quality evidence; "detox" claims are not proven.

How much Chlorella do people take?

Usually 2 to 10 g a day.

Is Chlorella safe?

Contains vitamin K (affects warfarin). Can cause stomach upset and sun sensitivity.

Does Chlorella interact with medicines?

Contains vitamin K, which can reduce the effect of warfarin. May affect immune-suppressing medicines.

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.