Kidney Risk in OTC Weight Loss Drug Alli

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FDA has approved changes to the Drug Facts label of Haleon’s over-the-counter weight loss drug alli (orlistat) to warn of the risk of acute kidney injury, which the agency says is a rare side effect of the drug. An FDA statement says the new labeling advises consumers to ask a healthcare provider before using alli if they have ever had kidney disease or kidney stones. Consumers are also cautioned to stop using alli and ask a doctor if they develop symptoms of kidney injury or kidney stones. FDA says the risk of kidney injury is now described consistently across the labeling for both over-the-counter and prescription orlistat products.

The notice says FDA received periodic safety reports of acute kidney injury associated with alli, which led to a reevaluation of the safety signal for the OTC product. It says a search of the FDA Adverse Event Monitoring System and the medical literature identified 12 cases of kidney complications associated with alli use from its 2/9/2007 approval through 12/21/2023. The agency says the severity of the cases was “substantial,” with eight patients requiring hospitalization and five needing dialysis.

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