There is no drug that can *MAKE* you tell the truth, by Pentothal administered at the correct dose can lower inhibitions enough to make said subject tell you want to here.
Exactly.
The whole idea of "truth serums" is stupid. You can certainly give a person drugs that will lower their inhibitions, but that's about the best you can do to anyone.
I've spent years of my life on drugs. For a portion of those years I was taking whatever drugs I could get my hands on and trying to get as inebriated as possible without killing myself (which I'm suprised I never did). There have seriously been a handful of occassions when I couldn't even remember my own name that I've been in situations where I've had to lie and did. There was one occassion in which I was so messed up I thought I had been abducted by aliens and thought my closest friends WERE the aliens. And I know if they had started questioning me about something really personal I still would have lied if it was some secret I didn't want anyone to know about me. The only times I may have had my inhibitions lowered enough to just answer any question I would have been too messed up to even know what someone was asking me. And I've been in that situation dozens of times, too.
I can't imagine anyone who's really gone out of their way to try as many drugs as possible and use them recklessly would believe in the possibility of an effective "truth serum" drug.
Of course, usually after the Pentothal treatment fails to retrieve the information the conspiritors are seeking to learn, they move onto torture. I hear electric currents to sexual organs and blow torches work well.
I would welcome someone to give me lots of drugs and get me really high.
But you put a stun gun on my testicles and you don't even need to turn it on, I'll tell you everything you want to know and then some.
From what i know, they are able to reprogram your entire memory from it.
You could absolutely get someone inebriated and implant memories as well as alter existing ones. But I seriously doubt you could go so far as altering someones memories so much that you make them think they've lived another life or something.