HerbalGram 132 includes articles on saw palmetto history, biology, and trade; Asian holly oak gall; convictions in the death of Guatemalan Maya healer Domingo Choc Che; ashwagandha for sleep; psilocybin for depression; ivy gourd leaf extract for Type 2 diabetes; Korean red ginseng of the immune system; systematic review of elder berry for respiratory illnesses; black currant (Ribes nigurm); and more.