A member asked:

If lidocaine is not a controlled substance why is it so hard to get? i saw some over the counter that were 4% lidocaine, would those work?

2 doctors weighed in across 2 answers

Side effects: Lidocaine can have some important side effects, especially with the heart. Topical lidocaine can help some superficial pain, but does not work well on deep sources of pain.

Answered 4/13/2018

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Dr. Sandra Lora Cremers answered

Specializes in Ophthalmology

Lidocaine : Where is the pain that you need lidocaine? There are other meds that may be more helpful depending on the location.

Answered 4/13/2018

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