Side effects may range from mild to serious complications. Consult your doctor immediately when youfeel the following symptoms: Pain and swelling at the injection site or blurred vision may occur, vision loss, loss of color vision, cataracts), eye pain, hearing changes (such as ringing ears, decreased hearing/loss), unexplained diarrhea/abdominal pain/fever, Acute Respiratory Distress Syndrome- sudden/severe shortness of breath, labored or rapid breathing, severe dizziness
It may cause may cause your urine to turn reddish but this effect is harmless.This medication is recommended to be given intramuscularly or subcutaneosuly because when given intravenously (via vein), flushing, severe itching, severe dizziness, fast heartbeat, and fainting can occur.
Seek emergency medical help if you expereince allergies (rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing) or the symptoms mentioned above while taking this drug.