Pfizer's Syphilis Treatment Bicillin L-A in Short Supply

Since it came onto the scene in 1943, penicillin has made syphilis a thing of the past — almost. Now, the sexually transmitted disease is making a comeback in the U.S. and there's a shortage of the medication used to treat it.

Pfizer, the company that supplies it, says it's experiencing "an unanticipated manufacturing delay," and in a letter to consumers wrote that it would be providing just one-third of the usual monthly demand until July.

The medication, called Bicillin L-A, is the recommended treatment for people with syphilis.

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