Sports and energy

Guarana

Also called: paullinia cupana

A Brazilian seed rich in caffeine.

Why people take it
Energy, weight loss.
What the evidence says
Effects are mostly from its caffeine.
How it is usually taken
Count its caffeine (about twice that of coffee beans by weight).
Be careful
Counts towards your caffeine limit; avoid with heart problems.
Medicines it can interact with
As for caffeine; adds to other stimulants.

Other sports and energy

CaffeineNitrate (beetroot)Ketone estersCarbohydrate gelsMass gainerRiboseYerba mateTheacrine

Common questions

What is Guarana?

A Brazilian seed rich in caffeine.

Why do people take Guarana?

Energy, weight loss.

Does Guarana work?

Effects are mostly from its caffeine.

How much Guarana do people take?

Count its caffeine (about twice that of coffee beans by weight).

Is Guarana safe?

Counts towards your caffeine limit; avoid with heart problems.

Does Guarana interact with medicines?

As for caffeine; adds to other stimulants.

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.