Common side can include:
temporary blurred vision, temporary burning/stinging/itching/redness of the eye, watery eyes, dry eyes, blurred vision, swollen or puffy eyes, dry mouth, feeling as if something is in the eye, headache, dizziness, drowsiness, weakness, tired feeling, cough, sore throat, nausea, upset stomach, unusual or unpleasant taste in your mouth, sensitivity to light, dry nose.
More serious side effects can also include:
vision changes, eye sensitivity to light, eye pain/swelling/discharge, slow or irregular heartbeat, muscle weakness, unusual tiredness, mental/mood changes, coldness/numbness/pain in the hands or feet, swelling ankles or feet, sudden unexplained weight gain, shortness of breath.
Speak with your doctor if any side effects becomes too severe while taking Combigan. If you experience any serious side effects speak with your doctor right away to get additional medical treatment.