A July 28 US FDA warning letter to Skin Sciences Laboratory Inc., an over-the-counter drug maker in Pasig City, the Philippines, serves as a reminder for drug manufacturers to test any glycerin raw material for diethylene glycol, or DEG, a molecule that in many ways resembles glycerin, but is poisonous.
FDA's Skin Sciences Warning Letter Calls For Continued Vigilance Against DEG
In a reminder that the agency hasn't forgotten past tragedies, FDA warns Philippine OTC firm Skin Sciences to test glycerin raw material for diethylene glycol if it wants to keep selling toothpaste in the US.

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