l carnitine side effect pubmed L-Carnitine and Male Fertility: Is Supplementation Beneficial? Carnitine Supplementation in Chronic Hemodialysis
Description
Guarana, ginseng, and herbal extracts Guarana comes from a Brazilian plant native to the Amazon basin

Neuroscientist 22: 346358, 2016

Circ Res 1981

So can traditional anti-anxiety medications like benzodiazepines (Xanax and Klonopin), barbiturates (Seconal), gabapentin, and some sedative-hypnotic sleep medications (like Ambien)
