How Do Pain Relief Patches Work?

Author:Kangdi 13-02-2024

Pain relief patches provide localized analgesia through transdermal medication delivery. They work through several mechanisms:

Blocking pain signals - Some patches contain numbing agents like lidocaine which prevent nerve cells from sending pain signals to the brain. This reduces sensitivity in the area.

Counterirritation - Ingredients like capsaicin bring blood flow to the area, counteracting muscle and joint pain. The warming effect distracts from underlying pain.

Anti-inflammatory action - NSAIDs like diclofenac reduce inflammation and swelling that causes pain. Less inflammation means less pain signals firing.

Muscle relaxation - Patches with chemicals like menthol provide a cooling sensation that makes muscles feel relaxed and less tense.

Once applied to clean skin, the adhesive patch beds active ingredients into the skin slowly and continuously. The medications pass through the skin layers and are absorbed into the bloodstream. They accumulate in the tissues below the patch, providing 8-12 hours of localized treatment before gradually clearing the system.

Unlike oral pain relievers that must travel through the body, transdermal patches can deliver effective doses right to the source of pain. This direct action provides convenience, avoids systemic side effects, and enhances the efficacy of pain relieving medicines.