While minor, some of these side effects may occur. They are as follows; hives; difficult breathing; swelling of your face, lips, tongue, or throat. blurred vision; mild itching, redness, or irritation of your eyes; or dry mouth, unpleasant taste all may occur. However if any of these persist or worsen, it’s best to speak with your doctor right away.
There may be other signs of an allergic reaction that may develop more slowly while using this medication. Inform you doctor if you are experiencing any of the following; sudden liver failure--nausea, vomiting, itching, tired feeling, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes), confusion, rapid weight gain, (especially in your midsection); bone marrow suppression--sudden weakness or ill feeling, fever, chills, sore throat, mouth sores, red or swollen gums, trouble swallowing, pale skin, feeling light-headed or short of breath, rapid heart rate, trouble concentrating; or severe skin reaction--fever, sore throat, swelling in your face or tongue, burning in your eyes, skin pain, followed by a red or purple skin rash that spreads (especially in the face or upper body) and causes blistering and peeling.
If you begin to experience these side effects, inform your doctor at once. They are as follows; blurred vision, tunnel vision, eye pain, or seeing halos around lights; or eye swelling, redness, severe discomfort, crusting or drainage (may be signs of infection).