Cautions and Warnings: Carefully read before use. If you are not sure about how to use this product, ask your doctor for guidance. For external use only. Use only as directed. Do not bandage or use with a heating pad; the application of external heat such as an electric heating pad may result in excessive skin irritation or burn. Skin burns (swelling, erythema, bullous lesions, pain) including severe skin burns and skin necrosis have sometimes been reported with products containing menthol. Avoid contact with eyes and mucous membranes; if this happens, rinse thoroughly with water. Do not apply to wounds or damaged skin. Do not use in large quantities, particularly over raw surfaces or blistered areas. If overdose or accidental ingestion occurs, call a Poison Control Center immediately. Consult a healthcare practitioner prior to use if you are pregnant or breast feeding. Stop use and ask a doctor if: condition worsens, rash or irritation develops, symptoms persist for more than 7 days or clear up and occur again within a few days, you experience weakness, confusion, headache, difficulty breathing, discoloured skin, or any other unusual symptoms. Do not use if skin is irritated or if irritation develops.