Energy

Green Tea Extract (50% Caffeine)

Green tea extract, standardized to 50% caffeine, provides a stimulating effect to boost energy and alertness.

Clinical Dose: 400mgFound in: 4 products

What Does Green Tea Extract (50% Caffeine) Do?

Green tea extract standardized to 50% caffeine is a dual-purpose ingredient that delivers a potent energy boost alongside health-promoting polyphenols. Unlike synthetic caffeine anhydrous, this extract provides a more balanced stimulant profile by combining the caffeine kick with naturally occurring catechins like EGCG.

  • Enhanced Metabolic Rate: The synergy between caffeine and EGCG (epigallocatechin gallate) has been shown to increase thermogenesis and fat oxidation during and after exercise.
  • Sustained Energy Levels: By blocking adenosine receptors in the brain, it reduces perceived exertion and keeps you energized throughout your entire training session.
  • Cognitive Clarity: It improves focus, alertness, and reaction time, helping you maintain a sharp mind-muscle connection during complex movements.
  • Antioxidant Support: The high polyphenol content helps neutralize free radicals produced during intense physical activity, potentially aiding in cellular health.

Clinical vs. Gym Bro Dosing

TierDoseNotes
Beginner100-200 mgProvides 50-100mg of caffeine; ideal for those sensitive to stimulants.
Clinical400 mgThe recommended dose for significant performance and metabolic benefits.
High Performance600-800 mgDelivers 300-400mg of caffeine; for experienced users with high tolerance.

Key Insight: Always calculate your total caffeine intake based on the standardization. Since this extract is 50% caffeine, a 400mg dose of the extract equals 200mg of actual caffeine. Ensure you aren't doubling up with other heavy stimulants in your pre-workout stack to avoid over-stimulation.

Side Effects & Warnings

  • Stimulant Sensitivity: Can cause jitters, increased heart rate, or anxiety, especially in those not accustomed to caffeine.
  • Sleep Disruption: Taking this extract late in the evening may interfere with your sleep cycle due to the long half-life of caffeine.
  • Gastrointestinal Distress: Some users may experience nausea or stomach cramping if taken on a completely empty stomach.

Tip: If you are stacking this with a fat burner or another pre-workout, check the labels carefully to avoid exceeding a total of 400mg of caffeine from all sources per day.