Theacrine
Purine alkaloid structurally related to caffeine; found in Camellia kucha tea; marketed for energy and focus with less tolerance development than caffeine.
focusalertnessenergy
Dosing model
FLATFixed dose (no body-weight scaling).
Min dose
100 mg
Max dose
300 mg
Rounding
25 mg
Stacks containing Theacrine
Public community stacks that include this ingredient.
focus
Clean Stimulant Focus Stack
by@athlete
Supports alertness with lower jitter risk than caffeine.
Theacrine
100mg
L-Theanine
200mg
New
Evidence
2 records
Subjective energy, alertness, and focus
Healthy young adults (n=20) • RCT (double-blind, crossover)
Trends for higher self-reported attentiveness, alertness, focus, and energy with theacrine-containing supplement vs. caffeine and placebo; no significant differences on objective cognitive tests (trail making, digit symbol, reaction time).
Dose: 300 mg • Duration: Acute (single dose)
Small sample (n=20); self-reported outcomes more positive than objective measures. Tolerance-resistance claim lacks human RCT confirmation.
Cognitive performance and reaction time (combined with caffeine)
Male e-gamers (n=50) • RCT (randomized crossover)
Caffeine (125 mg) + TeaCrine (50 mg) + Dynamine (75 mg) combination improved Flanker inhibitory control and Psychomotor Vigilance Task reaction time vs. placebo; theacrine's isolated contribution is unclear.
Dose: 50 mg • Duration: Acute
Most human evidence uses combination formulas; isolated theacrine RCTs remain limited.
Forms
TeaCrine® (standardized theacrine)
Patented form; used in most human studies.