Common centaury (Centaurium erythraea): digestive properties, traditional uses, infusion preparation, and contraindications of this bitter herb.

Wild yam (Dioscorea villosa): traditional uses, tea and cream preparation, and contraindications in pregnancy and hormone-sensitive cancer.

Brazilian ginseng (Pfaffia paniculata): traditional uses, decoction and tincture preparation, phytochemical profile, and contraindications for pregnancy.

African ginger (Siphonochilus aethiopicus): traditional uses, tea preparation, and contraindications for pregnancy and blood thinners.

Huang Qin (Scutellaria baicalensis): traditional uses, tea preparation, and contraindications for pregnancy, surgery, and blood thinners.