What are the side effects of benzocaine for premature ejaculation?

Madeleine M. Castellanos, MD
Some people may be allergic to benzocaine or other inactive ingredients in these products. And overuse of benzocaine has been linked to a higher risk of acquired methemoglobinemia, a blood disorder that can trigger headaches, fatigue, shortness of breath, and a bluish tinge to the skin.

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