PEA's, at least the nbome/nboh versions.of 25-I, seem to be prime candidates for developing hppd according to my crude research. I personally began to develop symptoms after the first hit, tho I needed to be on something to notice the weirdness, like weed, at first. Now I experience these symptoms much of the time sober or not. You can clearly tell when you are experiencing these symptoms when they happen.
I'm doing a number of tests with 25-I nboh. In the subject selection process for a later test that I'm doing, 25 blotters of 25i nboh have been distributed too 25 test subjects, and 18 of the 25 report hppd symptoms, with 8 people experiencing symptoms of hppd over 3 weeks later. Overall, this group of.people, including me, have been taking psychedelic drugs.for years, primarily mushrooms or lsd, and have never experienced this phenomenon.
The more I use the 25i nboh the more noticeable the hppd like effects are and the longer they seem to persist. I don't know if I can correctly label it hppd though, as that disorder is for an ongoing and unending "problem", and the "hppd" certainly goes away when I stay away from drugs for a while, but perhaps that's my subjective experience. My wife has only taken this stuff one time and still gets little tripped out moments.
I'm currently running a test with a small group based around the effects of thus drug used daily at low doses to evaluate its worth in a number of areas, primarily to study the effects it has on neuropathic pain and depression/anxiety. The test runs 3 months and requires a hardly active dose of the 25i nboh of about 100ug to be taken every day. Ever since discovering the hppd like effects of this stuff I intend to collect data about that as well, as well as data about the after effects for a period of time after the end of the experiment in terms of both the hppd and any possible dependence that low dose repeated use may create, as my own tests seem to indicate a potential for physical dependance, tho it seems to be offset by that irritating tolerance.
I'll also report mescaline gives me similar temporary hppd like symptoms, so it's likely a trait shared by all the PEA based psychedelics. The nboh class gives far and away more of this effect.
I.kinda like it btw, tripped out forever pretty much describes my idea of utopia lol.