Rugby Maximum Strength Lidocaine Pain Relief Patch contains lidocaine 4.0% (external analgesic) for temporary relief of pain. If you're searching for lidocaine patches maximum strength 4 percent or lidocaine patches 4%, this flexible fabric option delivers targeted support in a fragrance-free formula. These pain relief patches are designed to fit comfortably on the affected area while you go about your day. For many shoppers comparing patches for pain relief extra strength, this is a convenient, no-mess alternative to creams. It's may be used as pain patches for back pain relief and other aches. Directions: Adults and children 12 years of age and over should clean and dry the affected area (free of lotions, ointments, and creams). Carefully remove the backing from the patch starting at a corner and apply the sticky side of the patch to the affected area. Do not use more than one patch in an 8 hour period. Maximum 3 patches per day. Discard patch after single use. Children under 12 years: do not use; ask a doctor.