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Just some things to be aware of: - Vyvanse 50 is roughly twice the dosage of Adderall 20 - It’s generally not a good idea to split the XR pills, but they won’

Just some things to be aware of: - Vyvanse 50 is roughly twice the dosage of Adderall 20 - It’s generally not a good idea to split the XR pills, but they won’t split the same way. As I understand it: Adderall XR and its generics are typically designed as a dual release (either two immediate doses, one delayed; or one immediate and one gradual; both can have the peak/drop off effect). Vyvanse has a more continuous release because its release mechanism depends on digestive enzymes to convert the chemical itself. (If I’ve got any of this wrong, my apologies, but I do think it’s appropriate to caution about splitting the XR pills unless you understand what that entails. Ideally this is a conversation with your doctor, not randos on the internet)

Auracle 4y ago
I very much don’t find the equivalent doses of Vyvanse and Adderall…uh, equivalent. I don’t know if it has to do with the delivery mechanism or the norepinephrine component but personally I feel like ~35mg of Adderall is closer to Vyvanse’s 50mg. I have idiopathic hypersomnia and not ADHD, though.
hombre_fatal 4y ago
I’m on mobile so I can’t easily skim websites for more official sources, but you can definitely find my conversion in the wild, like on http://www.adhdmedcalc.com/ http://www.adhdmedcalc.com/ — I didn’t make it up. One annoying thing about stimulants is that your first day taking it is a lot different than your 15th day in a row. I always end up ramping up until there’s some equilibrium with tolerance, else day 1 is way too strong, or day 15 is too weak.
- eyelidlessness 4y ago
  I definitely didn’t think you made it up. And yeah that site does match 20 Adderall XR to 50, which is very odd because it also says 20 of the other Adderall is too high for a Vyvanse equivalent. For Adderall XR it also lists a maximum dosage of 30, which is not true. I think they’re treating the XR as two doses, and halving to accommodate that? That is definitely not how I’ve ever had it discussed or prescribed by my doctor, or fulled by a pharmacy. And it’s inconsistent with Vyvanse which is also XR and always treated as a single dose. In any case if you were taking Adderall XR “20” and it was actually two doses (40) that would be equivalent to the Vyvanse.

Auracle 4y ago

I very much don’t find the equivalent doses of Vyvanse and Adderall…uh, equivalent. I don’t know if it has to do with the delivery mechanism or the norepinephrine component but personally I feel like ~35mg of Adderall is closer to Vyvanse’s 50mg. I have idiopathic hypersomnia and not ADHD, though.

hombre_fatal 4y ago

I’m on mobile so I can’t easily skim websites for more official sources, but you can definitely find my conversion in the wild, like on http://www.adhdmedcalc.com/ http://www.adhdmedcalc.com/ — I didn’t make it up. One annoying thing about stimulants is that your first day taking it is a lot different than your 15th day in a row. I always end up ramping up until there’s some equilibrium with tolerance, else day 1 is way too strong, or day 15 is too weak.

eyelidlessness 4y ago
I definitely didn’t think you made it up. And yeah that site does match 20 Adderall XR to 50, which is very odd because it also says 20 of the other Adderall is too high for a Vyvanse equivalent. For Adderall XR it also lists a maximum dosage of 30, which is not true. I think they’re treating the XR as two doses, and halving to accommodate that? That is definitely not how I’ve ever had it discussed or prescribed by my doctor, or fulled by a pharmacy. And it’s inconsistent with Vyvanse which is also XR and always treated as a single dose. In any case if you were taking Adderall XR “20” and it was actually two doses (40) that would be equivalent to the Vyvanse.