"take elvanse (50mg- uk version) in morning for past 2 years. meds are slow acting, and do not improve motivation or efficiency when working. there is no alternative in the uk- no adderall- so this is the only option.  this medication sucks because: 

1.) it gives such a great high for the initial 15 minutes to 30 minutes, but it gives such a horrible crash that the negative feeling ruins your day it does not help motivation if anything it causes depression , possibly improves concentration marginally. 

2.) i have faced serious and significant weight loss. being skinny myself, this is of course not a good thing. currently a 5&#039;11 male, weighing 62kg or about 135 pounds. am 24 years old. 

3.) the medication is addictive."