Caffeine and theanine: a new edge for athletes?
Symptom relief
Completed
This study looked at how caffeine and L-theanine, taken alone or together, affect physical and cognitive performance in 20 healthy competitive athletes aged 18-30. Each participant completed four test sessions, receiving either caffeine, L-theanine, both, or a placebo. The goal w…
Phase: NA • Sponsor: Ulaş Can YILDIRIM • Aim: Symptom relief
Last updated May 20, 2026 11:57 UTC