methafrone

Khellin is a crystalline extract of a crude drug, which has long been used in Egypt for the treatment of ureteral colic. It is used in the management of bronchial asthma and angina pectoris. Interest in khellin as an adjunct to ultraviolet (UV) light therapy in the treatment of vitiligo is based on the structural similarity between khellin and the psoralens. Success has been reported using oral and topical khellin in clinical studies but it is not likely that khellin will be approved for the treatment of vitiligo. Unwanted side effects of khellin include dizziness, reversible cholestatic jaundice, pseudoallergic reaction, and elevated levels of liver enzymes (transaminases and gamma-glutamyltransferase). — NCATS