U.S. health regulators recommended against use of Pfizer Inc’s pulmonary arterial hypertension (PAH) drug Revatio in children up to 17 years of age, saying it had a higher risk of death when taken in a high dose. While the drug has never been approved for treatment of PAH in children, the U.S. Food and Drug Administration’s warning is against off-label use of the drug. Revatio, which has the same active ingredient as Pfizer’s erectile dysfunction drug Viagra, is used to improve the ability to exercise in people with PAH -- or high blood pressure in the vessels carrying blood to the lungs.
