Why is asthma a contraindication for ketoralac?

Some have problems. A subset of asthmatics have Aspirin sensitive asthma. If you have never had a problem with Aspirin or Ibuprofen making your asthma worse it is probably safe. Aspirin sensitivity should be tested for and, if present, the usual treatment is desensitization plus daily, high dose aspirin. See your allergist or pulmonologist for more details.