FDA Warns of Risks with Unapproved Use of Malaria Drug Qualaquin

Serious side effects reported when used to treat or prevent night time leg cramps

The U.S. Food and Drug Administration today warned that the unapproved use of the malaria drug Qualaquin (quinine sulfate) to treat night time leg cramps has resulted in serious side effects and prompted the manufacturer to develop a risk management plan aimed at educating health care professionals and patients about the potential risks.