The drug shows an effective and fast action of mechanism in order to provide relief from pain. Its core function is to inhibit the COX-2 enzymes, which enhances the production and growth of prostaglandins. Prostaglandins are chemical transmitter that sends the signal of arthritis inflammation. Generic Celebrex contains Celecoxib which is its main constituent that reduces the production and growth of pro-inflammatory hormones which are responsible for pain or inflammation experienced. In case of women menstruation, the drug can be helpful as it truncates pro-inflammatory hormones, which reduces menstrual pain. Similarly the medicine is also useful to get fast relief from pain caused due to osteoarthritis in joint of body.