heyyo, just an fyi, fentanyl has a really low oral bioavailability (probably even moreso if they're blues, bc those things are compressed so fucking tightly you could probs use em to break a windshied. tried crushing one on my phone screen the first time, totalled my phone and literally ripped a hole in my dollar bill. i even started using a hammer for a bit lmao)
your best bet for blues is to vaporize em off a foil, but they are INCREDIBLY poorly dispersed (i.e. vaporizing one half of a pill migh barely get you high, while a literal crumb from the same pill on the other side might be enough to overdose. i seen many a seasoned junkie fall victim to it, on the hotspot where i used to live, it was almost an every-other-day occurence it seems like
also, another thing to take into account is the possibility they might not be fent, but nitazenes instead (common in my [old] area, more specifically etidonozene). honestly the way benzofuranes have been being developed, it's really hard to get a guage on bioavailabilities, usually its pretty safe to assume vaporization will be consistently high though.
(i also have never met ANYONE that's tried shooting them, so idk if it'd actually even work, i do know they're extremely poorly water soluble though)
I've been doing a lot of research into Opiates in terms of CTB - to combine them with a Benzo and possibly alcohol to potentiate them. I started out looking at...
1) Oramorph. It's available on the DW but would involve drinking significant amounts (and an AE as with all as Nausea comrs into it). Notwithstanding that, its possible to be sucessful.
2) Oxycontin/Oxycodone. These are again available and are more powerful than Morphine. Nausea comes into it and its difficult to get a MG figure that would prove conclussive. Anyone?
3) Heroin. Readily available but needs to be tested as per potency. Can be administered IV (but I have difficult veins), rectally or IM. IM is easy but does anyone know the bioavailability re that method and how it effects the time frame and indeed any issues re such?
4) Nitazenes again available but masquerading as something else in pill form. Potentially very strong. Anyone aware of any issues in taking large amounts orally (obviously Nausea)? These 'may' present a simplier option.
Please chip in if you have any knowledge re suchlike.
idk much about the first one, but if your only ROA is oral, i'd say it's not gonna work. even if you managed to black out without puking, you'll just throw it up in your sleep. "best" possible scenario is you choke on your vomit, which leads to you potentially waking up at least partially (due to adrenaline), and that's a fucking awful way to go.
oxy is more 50/50, depending on the preparation. if it's roxicodone brand, it is in fact possible to vaporize them, but all other brands (that i'm aware of) take in depth pharmicokinetic knowledge (far past me, at least) in order to not just cinder and denature. if you do a cold water extraction, you'd be able to remove the oxy from the acetaminophen, and then make a liquid solution from it which you could plug (wouldn't recomend shooting, pills have high probability of causing clots quickly, which might prevent the drug from actually reaching your (liver i think?)), or if you're willing to risk potential sepsis, IM injection would be possible, but if you don't succeed, shit might suck.
as for the heroin (my truest love; it's all blues and fetty round here), i am QUEEN of the intramuscular injection, it's always been my favorite ROA for heroin, just can't do it often, bc necrosis risk lol. but to answer you, it's almost identical in bioavailability to IV (assuming you get it into muscle, not fat or skin), like 98% im to 99% iv, the come up time is about like 3 or 4 times as long as iv i wanna say? it's honestly still really quick, you just don't really get that overwhelming rush that you do from iv, it feels a lot more like the smoking high, maybe a lil more intense tho.
finally, nitazenes (if you google "benzofuranes" you can find most types on wikipedia, though bluelight has tons of firsthand if you're willing to dig)
there is SUCH a broad variety (increasing all the time) to these that there's no one rule to tell you absolutely how strong they'll be, HOWEVER if you exclude most of the iso- and like 75% of the proto- family of nitazenes, they're usually anywhere from 100x-10,000x the potentcy of fentanyl per gram, however, the manufacturers do (usually) put in the absolute bare minimum effort to make them *feel* as strong as whatever it's being sold as. if you can get your hands on etidonozene in bulk, itll be lights ouf from the second it even touches your mucas membranes/blood. there's a story of the inventor, a guy from slc, who upon synthesis started using, and by the time he was caught and forced to quit, they put him on like 10 times the max dose of [subs?/methadone? which ever one has agonist/partial antagonist combo], his withdrawals were still so insanely intense he ctb by his own hand (if that says anything about its potency?).
also, yeah they'll definitely make you nauseous, but usually you don't even notice because it's lights out the second you come up, unless you have a micrometer calibrated scale somehow? (also this is assuming they're pure)
it's also possible (and pretty quick) to develop a slight synthetic opioid tolerance which basically curbs the nausea (note: idk why, but in my experience fent and benzofurane nausea act similarly enogugh, a weirdly if you switch from fent to tar/oxy/hydro/etc or benzofuranes to tar/oxy/hydro/etc the nausea is like the first time all over again