Trimacort Injection is a steroid used to treat various medical conditions like osteoarthritis and rheumatic disorders. It prevents inflammation and suppresses the immune system. It is typically administered by a doctor or nurse, and should be taken regularly until a doctor advises stopping. Side effects include infection, headache, joint pain, and injection site reactions. Avoiding pollen and dust mites can worsen symptoms. Pregnant or breastfeeding women should inform their doctor before use.