WHAT IS THCp

THCp (tetrahydrocannabiphorol) is a phytocannabinoid first identified in 2019 by Italian researchers studying minor cannabinoid composition. It has the same general structure as Δ9 THC but with a longer alkyl side chain (7 carbons instead of 5).

The longer side chain dramatically increases CB1 binding affinity — preclinical research shows THCp binds CB1 receptors approximately 30× more strongly than Δ9 THC. In animal studies, THCp produced cannabis-like effects at much lower doses than Δ9.

THCp is present in cannabis at very low concentrations (under 0.1% in most cultivars). Commercial THCp products are typically synthesized from CBD through chemical conversion, similar to Δ8 production.

EFFECTS + DOSING

Subjectively, THCp produces effects similar to Δ9 THC but at much lower doses. A 1mg THCp serving may produce effects comparable to 5–15mg Δ9 in humans (though direct dose-comparison research is limited).

Commercial THCp products are typically formulated at very low milligram doses — 1–5mg per serving instead of the 10–25mg standard for Δ9.

For new consumers, THCp is not recommended. The high potency increases the risk of overdose-style "greening out" effects, and individual sensitivity varies more with THCp than with Δ9.