Panoxen Spray is used to relieve pain and reduce swelling in your joints and muscles. It can be used to treat various injuries such as sprains, strains and bruises. It can also be used for tendonitis (such as tennis elbow) and osteoarthritis. Panoxen Spray may be used 2 to 4 times a day on the affected area depending on how severe your condition is. It should be applied slowly and evenly to the skin until it is rubbed in. You should not use it too often and you should not cover the treated area with a bandage or plaster. It is a safe medicine with few side effects, but you may get a skin rash, itching, reddening or burning of the skin. Occasionally a skin rash may be a sign of severe allergic reaction. Tell your doctor straight away if you get a rash with blistering. Panoxen Spray is not recommended if you are pregnant or breastfeeding and you should not use it if you are already taking diclofenac (or other similar) tablets.