Dose-response effect of L-theanine on psychomotor speed, sustained attention, and inhibitory control: a double-blind, placebo-controlled, crossover study.
- 2022-10-20
- RCT
- Nutritional neuroscience 26(11)
- Tharaka L Dassanayake
- Devasmitha Wijesundara
- Chanaka N Kahathuduwa
- Vajira S Weerasinghe
- PubMed: 36263942
- DOI: 10.1080/1028415x.2022.2136884
- High evidence
- Adults
Active doses significantly improved reaction times in the RTI (100-200 mg) and RVP (200-400 mg) tasks from baseline (p < 0.05), but once controlled for the change-from-baseline caused by placebo, only the RTI simple reaction times showed significant improvements
- Effect
- Neutral
- Effect size
- Small
- Significant
- No
- Dose
- 400 mg