While using ketoprofen, avoid drinking alcohol. Ketoprofen-induced gastrointestinal bleeding can be exacerbated by alcohol. This includes black, bloody, or tarry stools, as well as coughing up blood or vomit resembling coffee grounds. Alcohol can also increase the risk of developing kidney problems while taking ketoprofen. Ketoprofen may also cause skin reactions including rashes and hives. If you experience a skin reaction while using this drug, stop taking it and get medical help immediately. Skin reactions may be due to other medications you are taking too. Tell any health care provider who treats you during periods when you are using ketoprofen about all of their medications, especially those that affect the skin, even if they appear to be working. You could also experience pain, fever, cough, shortness of breath, or trouble breathing. If you experience any of these symptoms, call your doctor immediately. Do not use more than one NSAID at a time unless told to do so by your doctor. Taking more than one medication can increase your chances of suffering from serious side effects. Examples of NSAIDs include ibuprofen, naproxen, celecoxib, and rofecoxib. Talk to your doctor about what options are best for you depending on your specific circumstances. He or she may be able to switch you to another type of medication or recommend other treatments for you.