Vyvanse vs Adderall: How They Compare (Honestly)

Vyvanse and Adderall are often compared as if one must be "stronger" — but the honest answer is that both are amphetamine stimulants that work the same basic way, and the real differences are in how they're delivered and how long they last. Neither is simply better; the right one is whichever controls your symptoms with the fewest side effects for you. Both also sit within the broader range of prescription Adderall alternatives, which is worth a look if you're still mapping out the best Adderall alternatives for your situation.

Are Vyvanse and Adderall the same?

No — they're closely related but different drugs. Adderall is a mixture of amphetamine salts that's active as soon as it's absorbed. Vyvanse is lisdexamfetamine, a prodrug that's inactive until your body converts it to dexamfetamine. Both raise dopamine and norepinephrine activity; both are Schedule II controlled substances. (Not sure whether Vyvanse counts as a stimulant at all? It does — see is Vyvanse a stimulant?)

The practical differences

Is Vyvanse stronger than Adderall?

Not in any fixed sense. They're different molecules dosed on different scales, so you can't line them up milligram-for-milligram. A higher number on one isn't "more drug" than a lower number on the other. What decides the effect is the dose relative to that medication and how your body responds — which is exactly why a prescriber titrates carefully.

What is 40 mg of Vyvanse equal to in Adderall?

There's no official, exact equivalence — and that's the honest answer people don't always want to hear. Because Vyvanse and Adderall are absorbed and converted differently, any "conversion" is approximate and varies between individuals. Switching between them is done by a prescriber starting at an appropriate dose and adjusting based on your response and side effects, not by plugging numbers into a formula. Treat any specific mg-to-mg chart you see online as a rough talking point for your clinician, not a rule to self-apply.

Which should you choose?

Many people prefer Vyvanse's smooth, long, once-daily profile; others do better on Adderall or need immediate-release flexibility for part of the day. If neither suits you, there are other stimulants and non-stimulants — see Vyvanse alternatives, non-stimulant ADHD medication, and the prescription alternatives guide, or the overview of alternatives to Adderall.