Salonpas pain patches may cause a mild cold or burning sensation at the site of application, according to Drugs.com. The patches may also cause more serious side effects that require immediate medical attention, including severe burning, pain, swelling or blistering of the skin.
Because Salonpas patches contain a nonsteroidal anti-inflammatory drug, they may cause stomach bleeding, especially in people who are over age 60, have a history of stomach ulcers, take other blood thinning medications, drink more than three alcoholic beverages per day or use the patches more often than directed, states Salonpas. Individuals with signs of stomach bleeding, such as vomiting blood or passing black or bloody stools, should stop using Salonpas patches and contact a doctor immediately. Signs of a severe allergic reaction to Salonpas patches, including hives, difficulty breathing and swelling of the lips, face, tongue or throat, require emergency medical attention, states Drugs.com.
People use Salonpas pain patches to relieve mild to moderate muscle aches and pains associated with strains, sprains, arthritis or bruises, states Salonpas. Individuals apply the patches directly to the painful area and leave the patch in the place for eight to 12 hours. If the pain persists after removing the first patch, individuals may apply a second patch. People may use Salonpas patches for up to three consecutive days.