Performance/Cognition/Mood

Theacrine

Purine alkaloid from kucha tea that provides stimulant-like energy and focus for caffeine-sensitive adults seeking alertness.

Theacrine

Purine alkaloid from kucha tea that provides stimulant-like energy and focus for caffeine-sensitive adults seeking alertness.

score

evidence

Caution

risk

Proven Benefits

01Reduces fatigue and boosts energy

02Improves concentration and focus

03May enhance exercise endurance

04May improve subjective mood

Chemical Forms

Recommended

Theacrine (TeaCrine)
Standardized theacrine extract

Avoid

Unstandardized kucha tea powder (theacrine content varies widely)

Expert Note

Standardized theacrine extracts provide a verified dose of 1,3,7,9-tetramethyluric acid, typically 98%+ purity. Raw kucha tea leaf powders contain variable and often unknown alkaloid concentrations, making consistent dosing impossible. Human trials have used specific theacrine isolates, not whole-leaf preparations.

Protocol

Amount

100-300 mg

Frequency

Once daily

When

Morning or early afternoon, with or without food. Avoid within 6-8 hours of bedtime due to stimulant properties.

Condition-Based Dosing

General energy and focus support

100-200 mg daily— Start at the lower end to assess stimulant tolerance.

Exercise performance or high cognitive demand

200-300 mg daily— Higher doses used in athletic trials; split into two doses if jitteriness occurs.

Safety & Limits

Upper Safe Limit

300 mg/day (highest dose studied in short-term trials; no official UL established)

Cycling

Safe for continuous use

Contraindications

Pregnancy or breastfeeding — insufficient safety data for stimulant alkaloids

Cardiovascular disease or arrhythmia — stimulant properties may increase heart rate or blood pressure

Anxiety disorders or panic disorder — may worsen symptoms due to CNS stimulation

Bipolar disorder — dopaminergic modulation may affect mood stability

Synergies

Caffeine

Theacrine may prolong and smooth caffeine's stimulant effects, with some trials showing synergistic improvements in energy and focus.

L-Theanine

L-theanine can soften the stimulant edge of theacrine, promoting a calm-alert state similar to the popular caffeine-theanine combination.

Avoid Combining With

✕Sedative medications or sleep aids (functional opposition to stimulant effects)
✕Alcohol (may mask perceived benefits and increase dehydration risk)

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