"been on it for one week. 150xl dry mouth. lost voice. insomnia. but i was up and adam chipper and slaying at work!!!! like being on speed!!!! went down to 75mg to try and see if helped. ...constant muscle spasms and a feeling of hypertension in my arms. heart rate seems higher. just feel not worth it. plus did u see the withdraw experiences? atrocious. getting off before it&#039;s too late. don&#039;t need high blood pressure this young."