"on for 9 weeks.  started dose gradually as prescribed, 2 days i had constant diarrhea.  immediately, my cravings were gone for sugar &amp; chocolate, but keep reading! at full dose (2am, 2pm), i had constipation, got better after taking colace.  i felt fine all day &amp; night, but when the evening dose had worn off by the am i would wake up shaking &amp; heart racing. felt better after next dose, but shaky all day. one day i almost passed out after normal exercise. then non-stop nausea set in so now i could not eat and felt like vomiting just from looking at food!  drug made me anxious &amp; jittery so i stopped it. lost weight..20 pounds in 9 wks, mostly because of nausea, but side effects were not worth the weight loss."