ive been told dex is much cleaner similar to vyvanse but still being an active chemical, closer to addys, i think i react poorly to the L-amp (the speedy bit of addy) although i wonder how it compares vs d-amp alone without L/amphetamine in the combo
Vyvanse is lisdexamphetamine which is just a prodrug for dexamphetamine. That's why it comes in capsules instead of waxy or coated time release tablets even though it's a time release medication. The time release is not in the pill, but rather in the actual drug itself. Vyvanse is a prodrug so the actual drug inside the caps is not active at all, it needs to be metabolised into dexamphetamine to become active. That's also why snorting Vyvanse doesn't work. The metabolism only happens orally. So snorting it just means you snort inactive powder (although you get a little in the drip, but still, it won't kick in quicker and you're basically just wasting drugs).
This is why it's become more widely prescribed, because it is harder to abuse compared to IR amphetamine which is easy to just crush and put up your nose. You'd need a lab and chemistry knowledge to bypass the time release of Vyvanse as you'd need to turn it into dexamphetamine outside the body by removing the lysine molecule.
Anyway point is the feeling of the two is basically the same once they peak. The Vyvanse only works once it metabolises into dexamphetamine, so all the active effects are from dexamphetamine that's just being metabolised slowly in your body as lysine molecule added to it is removed.
The main differences come from the obvious lack of time release in regular dexamphetamine. So it kicks in faster and has a shorter duration.
Personally I have been prescribed both and found both to be effective for ADHD and to be clean stims. However the nature of Vyvanse's reliance on metabolism means that some days it's stronger and long lasting, other days it's weak and lasts only a few hours, and you have to wait two hours for it to kick in to find out if it was gonna work properly that day.
This eventually got on my nerves so I asked my doc for regular dexamphetamine instead. It feels the same as Vyvanse did when it actually worked properly, and has much more consistent effects since I'm not relying on a prodrug metabolising into the active drug. It does vary in effects by day, I think all amphetamines do, but by a much smaller margin, and in any case if my normal dose is weak that day I find it out within 30-40 mins not 2 hours and I can redose it without the duration being so long I can't sleep that night.
Oh and to actually answer the OP... clonazepam is known to cause compulsive redosing and blackouts in some people, since you're obviously one of them why not speak to your doc about moving to a different benzo?
As for the discussion about benzos leaving you feel sober if you have anxiety... nah, this is bollocks imo. It's like when you hear people say if ADHD meds make you focus it means you have ADHD... and I have heard this even from psychiatrists... it's bullshit, stims make anyone focus.
Likewise a benzo is still a benzo if you have anxiety, a lot of this is dose dependent but you would still blackout from eating too many pills of clonazepam if you have anxiety for example, and you also will have delusions of sobriety even if you have anxiety too. If anything I think benzos are more euphoric if you have anxiety because the sudden anxiety relief when benzos kick in during a moment of bad anxiety, especially a panic attack, is a high in itself. Whereas someone without anxiety takes benzos and just feels sleepy and forgetful. They also need to take high doses to get any effect that can be considered recreational. But if you got anxiety, a therapeutic dose that works to relieve your anxiety still gets you that lovely feeling of relief.
