Effect | None |
Values | Figure 1 |
Trial Design | Randomized trial |
Trial Length | 1-7 Days |
Number of Subjects | 20 |
Sex | Both Genders |
In a randomized, placebo-controlled trial, 20 healthy participants undergoing high but normal stress took 200 mg of theanine twice daily or a placebo after breakfast and lunch for 17 days.
There wasn't an apparent effect of theanine of salivary alpha-amylase. Subjective stress was lower in the theanine group