Nootropics Limited evidence

Theacrine

Tea alkaloid that feels like caffeine with a slower fade.

Theacrine (TeaCrine) is a purine alkaloid related to caffeine. People use it for a longer, flatter alertness curve. Human data is smaller than caffeine’s library. Stacking both can still wreck sleep — it is not “caffeine without consequences.”

How to use

100–200 mg in the morning, last dose well before mid-afternoon if sleep is fragile.

Details

Ingredients
Theacrine
Benefits
Alertness, Lower habituation vs caffeine (claimed)
Dosage
100–200 mg
When to take
Morning, Pre-workout
Side effects
Insomnia, jitter if stacked with coffee. Start low.
Scientific evidence
Small human studies on energy and cognition; not a replacement for sleep or a huge caffeine evidence base.
Form
Capsule

Editorial rating ★ 3.7

A reasonable caffeine cousin. Respect the half-life the same way you would coffee.

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