trip407: I've tried combining codeine / morphine pills (prescriebd both times) with amphetamine , and coming up on codeine w/no speed, then taking a small dose of it, both seem to potentiate each-other.
EDIT> Side-effects= close to none; I've lost like 3kg in 4 months time, sometimes had a head-ache because my sinuses where "banging" to my heartbeat, migraine style. Have had a phlebitis once but it wasn't too pronounced, got it first month of using because I was chasing it and wsn't respecting minimal hygiene rules of IV'ing anymore. I sometimes have joint-pains, just a bit of magnesium (pills for stomach acidity is what i use) cleans it up. I went from sleeping 60-65h/week to 50-55h/week, but that's still alright.
I think it's important to add that my product is (the one I got now) very pure, if not 100%; plays a big role, and that it has to be sand-dry before using it for IV, because solvents will fuck your veins, brain and liver up.
I once took "way" too much (1g+ IV'd - more than 15 injections), had a very fast heartbeat and strong vasoconstriction, I seriously was at risk of having blood pumping failure issues. Cured it by IV'ing solutions of salt (stronger than saline, it burned upon administration), by having 3-4 shots of booze (I usually do not drink), and by staying under the shower.
Cheers to your controlled use. I myself have now a new speed (no cuts, received in with solvent and slightly pink, lost +-40% weight - yet so worth it) which is much more potent than the last one I got; I too now use 50-100mg dry amp./day, that's half as much as before.
Btw popped 270mg MDMA pills (4 hours apart) twice yesterday, and hadn't slept the night before; big euphoria and everything that should come with it, I already took +-200mg speed in the last 24h, didn't really change much other than having 140-150bpm, and by night started having weird "visual interpretations" of what I saw; for example a trashcan would look like a person from 150m away, or a big rog was interpreted as a dog, etc. Also had minor visual alternation (little "stips" of coloured light in my sight - like when you put pressure on your eyes then close them). So no sleep, speed and (big dose) MDMA altogether I do not recommend for rookies who get stressed by side effects like weird visuals from sleep deprivation or abnormal heartbeats.