For all looking at drug OD as a means of escape; I've taken literally hundreds of OD's, including benzos, paracetamol, & opiates. My brother, ironically, successfully escaped using one of my methods. My advice is: if you can, see a GP, complain of severe agitation, & try to get any antipsychotic drug. These drugs, in very large doses, & when mixed with a large quantity of hard alcohol e.g. vodka, have an effect on the electric signals to the heart. You'll fall asleep, then have a huge cardiac arrest. These drugs are easier to get hold of in large quantities, doctors don't have the same fears as with benzos or opiates, & are way more effective. I wouldn't recommend street drugs as they're often cut with all sorts of rubbish, the sources are highly unreliable, as is the effect they have. If you want to OD then go to the best source; a pharmacy, but in order to get past the GP prescriber, you're going to have to pull off symptoms of psychosis & in my long experience I highly recommend agitation & intrusive thoughts, preferably with low level paranoia. Research first, then a little acting, & this should produce results.