Mangosteen (Garcinia mangostana): traditional uses of the pericarp, xanthones, how to make the tea, drug interactions and contraindications in pregnancy.

Catuaba (Trichilia catigua): traditional uses of the bark, preparation, contraindications and how to tell it apart from other plants sold as catuaba.

Chinese Cinnamon (Cinnamomum cassia): traditional uses, preparation, how it differs from Ceylon cinnamon, and contraindications tied to coumarin and the liver.

Bergamot orange (Citrus bergamia): traditional uses, essential oil and tea preparation, contraindications, and drug interactions with medications.

Coltsfoot (Tussilago farfara): traditional uses, preparation methods, toxic alkaloids, and contraindications for pregnancy and breastfeeding.