Eflornithine administered by injection is used to treat African sleeping sickness, a disease caused by protozoa (tiny one-celled animals). However, eflornithine hydrochloride applied topically
as a cream is the first agent known to help slow the rate of excessive hair growth. It is marketed under the brand name Vaniqa® and comes as eflornithine hydrochloride 13.9% cream. It is available on prescription from a doctor in the United States and elsewhere