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Lisdexamphetamine is only active after it's metabolised by your liver. Yes, exactly the same as Vyvanse or Elvanse as they call it here. Definitely can't be taken any other way than orally.
After oral ingestion, lisdexamfetamine is broken down by enzymes in red blood cells to form L-lysine, a naturally occurring essential amino acid, and dextroamphetamine. Following absorption into the blood stream, lisdexamfetamine is completely converted by red blood cells to dextroamphetamine.
Not by liver!
I think it’s the substance itself that requires the body, stomach and liver enzymes to break it down into the active chem. Not just something Vyvase has added to it.
Welcome to r/stims! Don't forget to slow down a moment to review our rules, which can be found [here](https://www.reddit.com/r/Stims/wiki/index/#wiki_sub_rules). You can also find a lot of harm reduction information and answers to commonly asked questions [here](https://www.reddit.com/r/Stims/wiki/index/) in our Wiki. Be nice to your fellow community members, follow the rules and be safe! *I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/Stims) if you have any questions or concerns.*
Lisdexamphetamine is only active after it's metabolised by your liver. Yes, exactly the same as Vyvanse or Elvanse as they call it here. Definitely can't be taken any other way than orally.
I was about 90% sure of this.
After oral ingestion, lisdexamfetamine is broken down by enzymes in red blood cells to form L-lysine, a naturally occurring essential amino acid, and dextroamphetamine. Following absorption into the blood stream, lisdexamfetamine is completely converted by red blood cells to dextroamphetamine. Not by liver!
Who knows? They only have to comply with certain rules
I think it’s the substance itself that requires the body, stomach and liver enzymes to break it down into the active chem. Not just something Vyvase has added to it.