There are many but, pick the ones you want. anxiety or nervousness, irritability, insomnia and a feeling of restlessness,hyperactivity, high blood pressure, tightness in the chest, heart palpitations, heart attack,stroke or congestive heart failure, digestive tract problems like vomiting, diarrhea, constipation or other stomach pain, fever, dry mouth, headaches, dizziness, blurred vision, profuse sweating, hair loss, menstrual cycle and sex drive disturbances, and urinary tract problems.