A summary of published research, not medical advice. See the Disclaimer.
Research summaries on compounds that people use for attention, memory, alertness or mental fatigue.
¶ Articles (2)
- Caffeine and L-theanine Probably helps (moderate evidence)
Research summary of human studies on caffeine and L-theanine, the pairing of the stimulant in coffee with an amino acid from tea.
- Rhodiola rosea Unclear: trials disagree (weak evidence)
Research summary of human studies on Rhodiola rosea, also called rose root or golden root, with its compound salidroside.
Each article has a Studies page listing the indexed trials and reviews, scored for design. All of them are in the study browser.