Black cherry (Prunus serotina): traditional use of the bark for cough, preparation methods, toxicity of leaves and pits, and contraindications.

African cherry (Prunus africana): traditional bark uses for urinary symptoms, phytochemicals, preparation, contraindications and conservation of the species.

Epazote (Dysphania ambrosioides): names, traditional uses, phytochemistry, external-use recipes and the warning about its toxic essential oil.

Khella (Ammi visnaga): traditional uses, khellin and visnagin, preparation methods, research, and cautions about the liver, sunlight, and drug interactions.

Dragon's blood (Croton lechleri): traditional uses of the Amazonian latex, studied compounds, crofelemer, preparation forms, recipes and contraindications.