Well i've been trying to dig further, and it seems phenethylamines, especially 2c-'s, can be active on the 5-ht3 receptor (wich are supposedatly especially present in the gut) and are responsible for nauseous feelings / diarrhea.
Also, from wikipedia
http://en.wikipedia.org/wiki/5-HT_receptors
5-ht3 is very different from other serotonin receptors, as in it's a ligand gated ion channel rather than a G protein-coupled receptor like all the others (like 5-ht2a wich is reponsible for much of the psychedelic effect of pea's/tryptamines/lsd).
Also have read tryptamines can also act on 5-ht3.
I haven't been able to find information saying where they are located other than the gut (they very well may be, this is lack of information), but this is inconsistent with reports of snorting 2c-'s creating a heavier body load than ingestion.
gloggawogga said:
I think most of the body load, jaw clenching, etc. is basically displaced emotional stress. Some drugs are more condusive to this effect than others. People do get body load from LSD and tryptamines. The phenylamines may be a little bit more notorious, due to activity on noreprinephrine and dopamine.
I think the "body load" (characterized by nausea / diarrhea) has a completely different system of action than the high energy/jaw clenching.
The norepinephrine/dopamine theory sounds very likely as cause tho, since as far as i know tryptamines do not act on those, yet they seem to be known causes of the increased heart rate / high energy and maybe jaw clenching side effect of amphetamine.
hugo24 said:
Not sure if we have (enough) data to say the phens have more activity on dopamin resp. noradrenaline.Think about LSD,AMT,AET,plus we have pure stimulants in the tryptamin world as well.If pulse and blood pressure is any measure of stimulative/DA/NA activity,I have yet to see ANY psychedelic raising these numbers!
2C-E specifically might have a bit a higher body load,the psychological cause gloggawogga suggested is probably a good explanation as 2C-E is working much deeper than other chems.But I must say on the peak,it is very calm and not at all stimulating.And sleep afterwards comes easy and is restful.
reading trip reports on errowid, i can upon 3 where people mesured pulse/blood preasure, and all seemed to report numbers from the 50% to 100 higher.
it only makes sence that 2c-'s are active on dopamin/noradrenaline, since some of it's cousins in the phenethylamines family cause similar side effects, and are well known to act on those (referring to amphetamine/methamphetamine here)