The average Lmx 5 cash price is about $62.96 for a supply of: Cream 5 % 30 pcs. Get our free Lmx 5 coupon and be eligible to receive a discount. You can reduce your Lmx 5 cost by up to 75% with our free Lmx 5 discount card. Bring it to a participating pharmacy near you to save on your prescription medication.Lidocaine is a local anesthetic (numbing medication). It works by blocking nerve signals in your body. Lidocaine topical (for use on the skin) is used to reduce pain or discomfort caused by skin irritations such as sunburn, insect bites, poison ivy, poison oak, poison sumac, and minor cuts, scratches, or burns. Lidocaine topical is also used to treat rectal discomfort caused by hemorrhoids. Lidocaine topical may also be used for purposes not listed in this medication guide.