It is also used to treat severe cases of rheumatoid arthritis and psoriasis.. Cyclosporine is used to prevent organ rejection in people who have received a liver, kidney, or heart transplant. Sumatriptan relieves migraines by stimulating serotonin receptors in the brain which cause the muscles surrounding the blood vessels in the azathioprine brain to contract and narrow the blood vessels. It is also used to treat patients with severe rheumatoid arthritis who have not responded to other medications. Orlistat blocks the action of lipase and thereby prevents the breakup and absorption of fat by as much thioguanine as 25% of the fat in a meal.

Celecoxib is an NSAID family pain medicine used to treat pain or inflammation caused by many conditions such as arthritis, ankylosing spondylitis, and menstrual pain. Azathioprine is used to treat patients with severe rheumatoid arthritis who have not responded to other medications is used to treat patients who have undergone kidney cyclosporine transplantation and for diseases in which activity of the immune system is important. It also prevents transmission mercaptopurine of pain signals by nerves to the brain.