4Possible Side Effects of Avonex
Like other medications, Avonex would lead to certain side effects. Common problems may include headache, dizziness, swollen sinuses, nausea, upper respiratory infection, weakness, aching muscles, fever, chills, urinary tract infection, muscle pain, and body pain. These side effects tend to be mild and disappear after a few days. Other less common issues include bronchitis, abdominal pain, joint pain, chest pain, toothache, migraine, hair loss, and reaction at the injected area, such as pain, discoloration, or swelling. If any of these side effects worsen or persist, talk with your pharmacist or doctor to seek proper care. [4]
