The FDA has notified healthcare professionals that a Boxed Warning is being added to the prescribing information for promethazine hydrochloride products, describing the risks of severe tissue injury, ...
Promethazine (Phenadoz, Phenergan, Promethegan) can cause gangrene and should only be used in a deep intramuscular injection, according to a warning from the U.S. FDA. Promethazine is used in ...
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