So my wife decided to tell my Dr I was snorting my adderall(sometimes) and he gives me vyvanse instead. Here is the problem. I was prescribed 30mg adderall IR 3x per day and he switches me to 50mg vyvanse and says I'll be fine because it's time released. So I take my first dose at 8am about 90min later I felt pretty good. I thought ok if I feel this way all day I'll be great. By around 12:30pm I felt like I had nothing in my system. I wasn't sick or had body aches like I get sometimes when I haven't taken addy but I was just exhausted. So after researching apparently addy is 75% d-amp and 25% l-amp. So with my 90mg in a day I'd be getting around 67.5mg d-amp and 22.5mg l-amp. Now if I researched correctly 50mg vyvanse converts to 16mg d-amp and no l-amp. This is nuts. So he basically drops me from 90mg amphetamines to a total of 16mg amphetamines. Does this sound right or am I off with something? I don't mind the vyvanse esp bc it forces me to not snort it but I feel like I should have been given more. 70mg vyvanse is what like 23mg amphetamine total? So at the very least I think I should take 70mg when I wake up at 8 then about an hour before I crash from it(around noon) take another at least 50-70mg to get me by until I crash from that around 3-4pm. At least I'd be done with most my day. We're my #'s off on anything? Doesn't this sound like a huge decrease?