Advanced stimulant science for those who've mastered the basics. Mechanisms, pharmacology, and cutting-edge research.
L-theanine is paired with caffeine to keep the alertness and blunt the jitters. Research protocols usually pair them somewhere between 1:1 and 1:2 caffeine to theanine. Enter your caffeine dose to see each ratio in milligrams.
Ratios reflect commonly used research protocols; the widely cited pairing is 100 mg caffeine with 200 mg L-theanine. L-theanine has a shorter half-life than caffeine, around 1.2 hours against roughly 5 hours. Educational information, not medical advice.
Caffeine is one of the few compounds where the dose ladder is well mapped. These four rungs cover almost every product on the shelf, from a cup of tea to a pre-workout scoop.
The 400 mg figure is the FDA guidance for healthy adults, not a target. Tolerance shifts where each rung feels, but not how much you have taken.
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