Immediately call your doctor if the following side effects appear. Black tarry stools, Bleeding gums, Bloating or swelling of the face or limbs, Confusion, Cough, hoarseness, Crying, Delusions, Dementia, Depersonalization, Diarrhea, Difficult or labored breathing, Dysphoria, Euphoria, Fever, chills, Discomfort, illness, Headache, Joint pain, Loss of appetite, Lower back or side ache, Muscle aches and pains, Nervousness, Nausea, vomiting, Painful or difficult urination, Paranoia, Pinpoint red spots on the skin, Rapid weight gain, Changing moods, Shivering, Sleepiness, drowsiness, Trouble sleeping, Ringing in ears, Runny nose, Shakiness of limbs, Sore throat, Sweating, Tingling or trembling of hands and feet, Unusual bleeding or bruising