Are you sure it was vasoconstriction that you experienced? Normally this makes your chest and extremities feel tight and achy; not like they are about to pop out. Also, severe cases of vasocontriction are usually accompanied by discoloration of the affected areas. Did you experience this?
Finally, does your comment on mephedrone mean you took 3g of it after having experienced 'serious intensive vasoconstriction'? If so, this was monumentally stupid.
What I mean its that a long time a ago when had a binge of 3g mephedrone had a very similar effects. Got red and/or blue, extremities felt tight and achy, pressure in chest, more pressure in left arm than right (heart), felt the muscles in the eyes compressed and coronary vein was popping out. At that moment thought could be psychosomatic, and this was suggested in another forum, that simply my mind/ego was defending it self from anihilation. It seems to be the most probable, but didnt started to have first any erratic/negative thoughts with this physical symptoms, once the reason regard as purely physical (was actually enjoying my time a lot listening to relaxed brian eno instrumental music). I tried to distract myself but couldnt avoid anymore the bodyload, so decided to abort the trip.
The 5-HT2A receptors are directly responsible for muscle tension. In fact, most muscle relaxers work by antagonizing this receptor. As a psychedelic, LSD is an agonist. Its not speculative it can cause vasoconstriction its scientific research read in LSD Psychotherapy by Stanislav Grof M.D., plus done some search with this articles
here, and
here.
About the effects it hit me in 30mn and visual effects were the same as any good acid, no soapy taste btw. I believe 100% to be LSD.
I read the hypothesis that depending of the crystal, there is different levels of purities, perhaps at dosage the impurity of the crystal was already noticeable in my body? 2 tabs no vasoconstriciton at all, 3rd then it all changed? The mystery builds up and im scratching my head..
Here is the purity concerning different crystals from a dutch board.
TYPES OF CRYSTAL
Needlepoint - Very pure(95% ) The best of the best
White Fluff - Very pure(95% ) Still around and the most sought after. very pure
Silver - Good and clean(85-90% ) Very good stuff.
Amber - Decent(70%?)
Lavender - (60-70%?)
TJ(tornado juice) - purity unknown.
Champagne - (50-60%?)