taking this for cough with Augmentin. Never have I been so exhausted. Is this a side effect of the hydrocodone? ## Hi Muffin, Side effects of Hydrocodone can include any of the following: nausea vomiting constipation Drowsiness Dizziness Lightheadedness fuzzy thinking anxiety abnormally happy or abnormally sad mood dry throat difficulty urinating rash itching narrowing of the pupils (black circles in the center of the eyes) Some side effects can be serious. If you experience either of these symptoms below, call your doctor immediately: slowed or irregular breathing chest tightness Of all the side effects listed here, the one's that stand out to me based on your description are: Drowsiness, Dizziness, and Lightheadedness. Please post back if you have any other general questions or co...