A member asked:

Vyvanse (lisdexamfetamine) makes the penile muscle shrink. why is that? are there long term effects

7 doctors weighed in across 2 answers

It does not: There is no such side effect of penile shrinkage with vyvanse (lisdexamfetamine). It's been proved to be safe in large trials. Relax.

Answered 4/29/2021

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See below: There is no evidence to support this concern. However, vyvanse (lisdexamfetamine) is potentially habit forming and can cause growth suppression with long term use. It is a controlled (scheduled) medication with potential for misuse. It is approved for treatment of adhd.

Answered 8/8/2017

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