"love this medicine! tried all the others, vyvanse definitely works the best. i stay on task, focused, more organized and been moving up in my field. 29 yr old female, 30mg dose. the only negative is if i don&#039;t take it for a day or 2 on the weekends then start again is at first it makes me real jittery and makes me go to the bathroom until my bowels are essentially cleaned out, but that&#039;s really not a bad thing. also i love the way it curbs my appetite and keeps me around 115 lbs without even trying(i&#039;m 5&#039;3&quot;). a very pleasant side effect!! i was on 70 mg a couple years ago but i was getting a little too skinny(stable around 106-108 lbs), so decreased the dosage."