tricomb
Bluelight Crew
You can't say it can't be the placebo *effect* because if you were conscious of the disparity between what it would exert naturally versus how expectation changes/amplifies it, then it wouldn't be the placebo effect. My point is that you don't know what it would have felt like without the 3a4 inhibitor so there's no way to tell what, if any, impact that had.
If you're using street drugs, if there was a change, it's more likely variance in the potency of the product rather than fentanyl adulteration (or even another variable such as environmental tolerance or something else along those lines). Fentanyl makes for a far different and less euphoric high than heroin and is less commonly used as an adulterant in most places because heroin is far cheaper than regulated (or even illicitly synthesized) pharmaceutical opioids. Powder heroin is cut with fentanyl at times (often from diverted veterinarian supplies) but given the regulation of such, the additional liability of adding a pharmaceutical heist on top of importing and distributing and your consumer generally not wanting a product that is cut with a less enjoyable alternative, it's far from ubiquitous.
(...cue the "no way, my stuff is consistent" and/or "I would know if it was stronger so there's no way" retort)
My only purpose in responding is to point out that you can't know something like that your heroin was cut with fentanyl by speculating after the fact when there are so many variables you aren't controlling for and even if you were, without lab testing, it's impossible to know.
Even if you'd used that batch before, subtleties such as inconsistency of the distribution of the cut or the proportion of nasal spray you used being absorbed by your nasal mucosa providing for less loss of bioavailability by incidental oral ingestion could also produce what you believe to have experienced.
This post is spot on. Read, Learn.