THCp is a rare, naturally occurring cannabinoid, believed to be up to 33 times more potent than THC on the CB1 receptors and up to 10 times more active than THC on the CB2 receptors.
Combined with Delta8 THC, THCp provides a unique effect that completely separates it from other cannabinoids. Not much is certain about THCp, but some anecdotal reports suggest it may assist in resetting cannabinoid tolerance. Regardless, THCp and Delta8 have a synergistic effect so in combination they react differently than they do by themselves.
Tolerance from other cannabinoids may not carry over to THCp tolerance, so this could be an explanation for these reports.
Use caution when experimenting with THCp for the first time, as it is very potent.