Buchu (Barosma crenulata) is a traditional black South African herb indigenous to the southwest region of Cape Colony where it was used as a stimulant tonic and soothing stomach remedy. The delicate stem bears white flowers with purple anthers that appear in the spring. The glossy Buchu leaves have oil glands throughout the leaf, are used to ward off insects, and can be used as an antiseptic. In a vinegar-based lotion, Buchu oil can be used for bruises and sprains. When the leaves are brittle after being dried, they possess a strongly aromatic, blackcurrant-like aroma that can be used to make a tea that can be especially useful for burning urination, urinary tract infections, digestive problems, gout, rheumatism, coughs, and colds. Buchu leaves can also be steeped in brandy to produce a medicinal brandy used for a variety of ailments.

Herbalists today recommend Buchu for urinary conditions such as cystitis, bladder irritation, and prostrate problems.  Buchu is believed to absorb excessive uric acid, thereby reducing bladder irritations.

Although helpful for varied symptoms and disorders, Buchu oil is not generally used in aromatherapy and should not be used at any time during pregnancy. This is true mostly in part to its stimulant-like qualities. Do not use in acute inflammations of the urinary tract. Individuals with sensitive systems may experience gastrointestinal intolerance. Avoid taking Buchu on an empty stomach. Appreciated for its treatment for mild urinary disorders and symptoms, there is no conclusive evidence available to indicate that it can or should be used in the treatment of weight loss.