At least 85 different cannabinoids have been isolated from the cannabis plant. Among these, THC-P (tetrahydrocannabiphorol) stands out as one of the strongest cannabinoids in terms of the psychoactive effects it can deliver to its users. 

Discovery of THC-P 

THC-P was discovered in 2019 by a team of Italian scientists at the University of Modena and Reggio Emilia as part of the UNIHEMP research project, funded by the European Regional Development Fund. 

While analyzing various cannabis strains, they identified a new cannabinoid that structurally resembles THC but features a significantly longer side chain. Typical THC molecules feature a pentyl chain with five carbon atoms; however, THC-P extends this to a heptyl chain with seven carbon atoms. This seemingly slight structural difference significantly enhances THC-P’s potency—making it up to 33 times stronger than THC.

Despite its strength, THC-P occurs in much smaller quantities within the cannabis plant compared to more prevalent cannabinoids like THC and CBD.

What are the THC-P Effects? 

Like other cannabinoids, THC-P primarily impacts the brain by binding to cannabinoid receptors, notably CB1 receptors. These receptors are integral to the endocannabinoid system, which influences various functions including mood, memory, appetite, and pain sensation.

The possible effects of THC-P may include:

• Intense psychoactive high

• Increases euphoria and relaxation 

• Heightened auditory and visual sensations

• Enhanced creativity

• Increased appetite

• Pain relief 

The possible side effects of THC-P can vary and may include:

• Dizziness

• Rapid heart rate

• Sleep disturbances 

• Dry eyes

• Nervousness/anxiety

• Potential for paranoia 

• Nausea and vomiting in some cases 

Given its stronger effects and longer duration compared to THC, THC-P should be approached with caution. The full range of THC-P’s effects is still under investigation, so users should stay informed about new research and adjust their usage accordingly.

How Long Does A THC-P High Last? 

On average, the effects of THC-P can last between 4-8 hours. 

This duration can vary depending on factors like:

• Dosage

• Body composition

• Tolerance level

• Metabolism

• Consumption method

THC-P is commonly consumed by smoking THC-P flower, and through concentrates in vapes, edibles, and beverages. Vaping THC-P in a weed pen can often produce a much stronger effect than smoking THC-P flower because concentrates are more potent and pure, delivering a more concentrated dose of THC-P. This method of consumption can not only intensify the effects but might also extend the duration of the high.

Is THC-P Safe?

THC-P is generally considered safe to consume, but given its high potency, it's important to use it cautiously. Since THC-P was only recently discovered, research into its long-term effects is still ongoing and not yet fully understood.

Is THC-P Legal?

THC-P, as long as it's derived from hemp, is considered legal in the U.S. under federal law. The 2018 Farm Bill makes any cannabis product containing 0.3% Delta 9 THC or less legal. However, legality can vary significantly by state.

Despite federal legality, some states like Hawaii and Idaho have specifically banned THC-P. These states have recognized that cannabinoids other than THC, like THC-P, can also produce psychoactive effects and have moved to regulate them accordingly. If you're considering using THC-P, it's important to check the specific laws in your state to ensure compliance and avoid legal issues.

Where to try THC-P?

Now that you’ve explored the history, legality, safety, and effects of THC-P, you might be wondering, Where can I experience it for myself? Look no further than the latest innovations from Modus Black.

In 2025, Modus released two cutting-edge products featuring a potent blend of 41% THC-P extract alongside other powerful cannabinoids like HHC and HTE. Whether you prefer Pocket Dabs for a concentrated experience or Black Prerolls for a more traditional approach, Modus offers premium options tailored to your consumption style.

Zachary Walls

Born and raised in Northern California to a family with generations of cannabis knowledge. In addition to being a cannabis connoisseur himself, Zach is an owner/operator at a popular barbershop in the East Bay. In his spare time, Zach creates music and has worked with many influential bay area hip-hop and r&b artists. Follow on Instagram.