L Tyrosine for Stress and Cognitive Performance
Small trials suggest L-tyrosine can help under acute stress, but it does little otherwise and has impaired performance in some studies. Doses and cautions.
Ashwagandha and the Brain: What the Evidence Shows (and the Liver-Safety Question)
Ashwagandha’s best evidence is for stress, with small effects on sleep. What the trials show, the rare liver-injury risk, and who should avoid it.
