Lemon (Citrus × limon): names, phytochemistry, traditional uses, recipes and precautions for tooth enamel, reflux and peel phototoxicity.

Key lime (Citrus × aurantiifolia): popular names, traditional uses, phytochemistry, recipes and precautions for sun exposure, skin and tooth enamel.

Bitter orange (Citrus aurantium): traditional and culinary uses, phytochemistry, recipes and precautions with synephrine, a cardiovascular stimulant.

Tangerine (Citrus reticulata): traditional uses of the peel and fruit, preparations, recipes, active compounds, contraindications and drug interactions.

Buchu (Agathosma betulina): traditional uses of the South African plant, preparation methods, essential oil compounds and contraindications of buchu.