Target tough pain at the source with Leader Maximum Strength Lidocaine Patches. Formulated with 4% Lidocaine, the highest concentration available without a prescription, these patches provide fast-acting, desensitizing relief. They work by temporarily numbing the nerves in the applied area, making them highly effective for nerve pain, backaches, and joint discomfort. The flexible, stay-put fabric is designed to adhere comfortably for up to 12 hours, allowing you to go about your day with continuous relief.