Etoricoxib 90mg is primarily used as a pain reliever and anti-inflammatory medication, not specifically for autoimmune diseases or allergies. It belongs to a class of drugs called COX-2 inhibitors, which help reduce inflammation and pain in conditions like arthritis.

• Autoimmune diseases: While some autoimmune diseases cause inflammation, Etoricoxib is generally used to manage symptoms like joint pain and swelling rather than treating the underlying autoimmune condition itself.

• Allergies: Etoricoxib is not used to treat allergic reactions or allergies. Other medications like antihistamines or corticosteroids are typically prescribed for allergies.

If you have concerns about autoimmune diseases or allergies, it’s best to consult a rheumatologist or an allergist for appropriate diagnosis and treatment options tailored to your condition.