I went to my nutritionist and he's trying to get me off vyvanse (lisdexamfetamine) for a different substance. can you replace vyvanse (lisdexamfetamine) with a pituitrophin pmg supplement?

No -- not related: No, there is no comparison between vyvanse (lisdexamfetamine) and pituitrophin pmg. http://tinyurl.com/n4fk9ev vyvanse (lisdexamfetamine) is a stimulant. This other substance appears to be an extract made from ground-up cow pituitary glands. This is in no way a replacement for vyvanse (lisdexamfetamine) or any other stimulant.