I've been on Vyvanse for about a month now. I have been exercising regularly and getting at least 6 hours of sleep a night, averaging about 8.5 hours a night over the course of a week.
I noticed after a couple of weeks that my medication seemed to stop working...I no longer have the focus required to do my Calculus III online class, and I have a final exam in ~12 days. I aced everything so far (100% on the mid-term) but that was back when I was on Adderall
I'm not sure if the Vyvanse doesn't work as well for me anymore because it simply doesn't have the racemic mixture, which I think worked well on me because of the 'kick in the ass' a lot of ADHD people get from the l-amphetamine
isomer, or for some other reason...
I've been eating lots of protein (at least 75 g a day, I work out for a short period of time everyday) and have been exercising outside in the sun as well.
Now for the point of the thread: I realized that it stopped working some time around when I started using Vitamin C supplements. I was taking 2-3 of these a day; each capsule is 1 gram each. Could it be that the Vitamin C is interfering with the absorption of Vyvanse? I've been taking at the very least 1 capsule each morning and sometimes 2.
I'm not going to tomorrow morning and see what happens (I'll report back here) but I'd like to know if anyone (preferably with extensive scientific knowledge on amphetamine/lisdexamfetamine absorption) has any idea whether or not this could affect it. It could very well be both the lack of l-amph isomer and the Vit. C supplements, but again, I'm not sure; hence why I'm posting this thread.
I'd really appreciate any input or thoughts on my situation.