What is the strongest prescription lidocaine patch?

The strongest prescription lidocaine patch typically contains 5% lidocaine. These patches are primarily used for the relief of pain associated with post-herpetic neuralgia, also known as shingles. It's important to understand that using more than the prescribed amount, or applying the patch for longer than directed, does not necessarily increase pain relief and can increase the risk of side effects. You should always consult with a healthcare professional regarding proper usage and potential risks.