Q: How much OTC 5% lidocaine is too much? I had laser done yesterday on full legs, arms, face, and underarms. I was told it was okay to have all of it done at one visit. This was my 5th treatment. I used the lidocaine an hour before the treatment and they gave me baby wipes to wipe myself clean before they started. I read that too much lidocaine has serious side effects. How much is too much? I used approx 15g?? How long before a "serious side effect" to show up? I do feel like a mild have a mild sunburn all over, and a few red patches on one thigh. However, my underarms are bright pink, a few welts, extremely itchy and very uncomfortable. Got all my symptoms within 1-2 hrs after treatment. Has not gotten worse. Please advise on what to do and how to prevent in the future. This is twice in a row my underarms have broken out. Thank you

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