I know that Adderall is mixed amphetamine salts and approximately 68% d-Amphetamine. Vyvanse is a prodrug that turns into d-Amphetamine in the gastrointestinal tract.
While I have taken both, I am trying to figure out which is stronger. A 30mg Adderall or a 30mg Vyvanse. I know the Vyvanse lasts a lot longer but disregarding that and focusing strictly on strength or the equivalent amount of d-Amphetamine.
Only knowledgeable answers please.
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Im impressed with your knowledge of d- and l- amphetamine. VYVANSE only has d-amphetamine. However, only about 30% of VYVANSE is d-amphetamine. The remaining 70% is both the l-lysine (the amino acid which is attached to d-amp) and the dimesylate (the salt in the mix). Thus, your bioequivalent doses (in terms of VYVANSE and AdderallXR) would be 30 to 10, 50 to 20, and 70 to 30, respectively. 30 of adderall would be MUCH stronger than 30 of VYVANSE.