Aidplast Perforated Cold Plaster is a topical pain relief product containing menthol, methyl salicylate, and camphor. The perforated design allows breathability while delivering cooling and analgesic effects for muscle and joint pain relief. The plaster works through multiple mechanisms: menthol provides a cooling sensation and pain relief by activating cold receptors and kappa-opioid receptors; methyl salicylate offers topical pain therapy; and camphor acts on TRPV1 receptors for analgesic effects. The combined ingredients help dilate blood vessels and increase blood flow to the applied area. It is indicated for muscle strains, joint pain, lumbago, sciatica, and rheumatic conditions.