According to medical researchers, ashwagandha's powerful relaxation properties are due to a unique group of alkaloids called withanolides. (supernaturalacnetreatment.com)
Recently, reports of the toxic effects of pyrrolizidine alkaloids in comfrey have led some herbalists to be wary of using it internally. (wellnessmama.com)
Leaves from the Coca Plant contain alkaloids which helps bring oxygen into your blood, helping your body avoid the effects of altitude sickness. (alpacaexpeditions.com)