Hypersensitivity/allergy is known to occur.
Medicinal Ingredients: Benzocaine, menthol,Zinc chloride. Keep out of reach of children. Stop use and ask a health care provider if swelling, rash or fever develops, if irritation, pain or redness persists or worsens, symptoms do not improve in 7 days and if following symptoms appear: weakness, confusion, headache, difficulty breathing and/or blue coloured lips or nail beds as these may be signs of methemoglobinemia, a rare disorder, which may appear up to 2 hours after use.