Hi, Nucoxia 90 mg contains etoricoxib which belongs to the group of medications known as non steroidal anti-inflammatory drugs (NSAIDS) is used to relieve pain. It is used to treat symptoms of psoriatic arthritis, osteoporosis and rheumatoid arthritis. Side effects of Nucoxia are nausea, vomiting, headache, dizziness, stomach pain, diarrhoea, blurred vision, difficulty in breathing, indigestion, swelling of legs or feet, rapid heartbeat, allergic reactions etc. Xyzid 20 mg contains rabeprazole which reduces the amount of acid produced in the stomach. It is used for treating acid-related diseases of the stomach and intestine like acid reflux, peptic ulcer disease (PUD) and some other stomach conditions associated with excessive acid production. Side effects of Xyzid are diarrhea, dizziness, flatulence, headache, back pain, weakness, flu like symptoms, sleeplessness, passage of wind, allergic reactions etc. Folitrax contains methotrexate which is used to treat rheumatoid arthritis where it can prevent further joint damage. It is also used to treat severe forms of a skin diseases called psoriasis by killing cells in the skin which are going too quickly. Side effects of Folitrax are nausea, vomiting, tiredness, mouth sore, loss of appetite, abdominal pain, fatigue, lymphadenopathy, weakness, GIT upset, headache, hair loss, dizziness, chills, bloody vomit, black or tarry stools, diarrhoea, increased heart rate, allergic reactions etc. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Zubayer Alam, General And Family Physician