I'm sorry to hear about the knee pain you're experiencing when climbing stairs. This type of pain can often be related to conditions like osteoarthritis or other joint inflammation issues.

One medication commonly used to relieve such pain and inflammation is Chymoral-AP Tablet. It contains a combination of Aceclofenac, Paracetamol, and Trypsin chymotrypsin. These work together to reduce pain, swelling, and inflammation by blocking certain chemical messengers and breaking down abnormal proteins at the inflammation site.

However, it's important to use this medication only under a doctor's prescription, as it may cause side effects like nausea, stomach pain, or dizziness. Avoid alcohol while taking it, and inform your doctor about any other health conditions or medications you are using.

Since knee pain can have various causes, I recommend consulting an orthopedic specialist. They can evaluate your symptoms thoroughly, possibly with imaging or physical examination, and suggest the most appropriate treatment plan tailored to your condition. If the pain worsens or you experience swelling, redness, or difficulty moving the knee, seek medical attention promptly.To narrow down potential causes, we will need some more information.Please tell me your age and gender.