Avoid

⛔ Best avoided

DMAA

Also called: methylhexanamine, geranium extract

A stimulant found in some pre-workout products.

Why people take it
Energy, fat loss.
What the evidence says
Not a safe or legal supplement in many countries.
How it is usually taken
Not recommended at any amount; see the warning above.
Be careful
Linked to heart attacks and deaths; banned in sport and by many regulators.
Medicines it can interact with
Dangerous interactions are reported; do not combine with any medicine.

Other avoid

Common questions

What is DMAA?

A stimulant found in some pre-workout products.

Why do people take DMAA?

Energy, fat loss.

Does DMAA work?

Not a safe or legal supplement in many countries.

How much DMAA do people take?

Not recommended at any amount; see the warning above.

Is DMAA safe?

Linked to heart attacks and deaths; banned in sport and by many regulators.

Does DMAA interact with medicines?

Dangerous interactions are reported; do not combine with any medicine.

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.