Tetrahydrocannabiphorol, also called THCp or THC-P, is a naturally occurring cannabinoid found in the cannabis plant. It is a close chemical relative of delta-9 THC, but its chemical structure changes how it interacts with cannabinoid receptors. It was discovered in 2019 by Italian researchers studying a medicinal Cannabis sativa variety.
Because THCp occurs naturally at very low concentrations, commercial THCp is generally produced using chemical synthesis or semi-synthetic processes involving hemp-derived cannabinoid precursors. Today, most commercial THCp products are not made by extracting large quantities directly from cannabis flower.
Some people think it’s 33x stronger than regular THC, but this is a myth.
Here’s what to know before trying it:
what is THCp, a naturally occurring cannabinoid?
THCp is a phytocannabinoid, meaning it is a cannabinoid that occurs naturally in a plant.
What makes THCp interesting is how it interacts with the body’s endocannabinoid system. Early research found that THCp binds to CB1 receptors much more strongly than delta-9 THC, which is one reason researchers became interested in its potentially potent effects.
The big difference is how little THCp the cannabis plant naturally produces.
Researchers found THCp in trace amounts when studying cannabis. That means you aren’t likely to find large amounts of naturally occurring THCp in ordinary cannabis flower.
This is also why commercial THCp products are different from simply extracting THCp from a cannabis plant.
where does THCp occur naturally?
THCp occurs naturally in cannabis, but only in very small amounts.
The 2019 discovery came from Italian researchers studying a particular Cannabis sativa variety. Their findings showed that THCp was one of several minor cannabinoids present in the plant. That means you aren’t likely to find large amounts of naturally occurring THCp in ordinary cannabis flower.
THCp is now found in commercial products, but most commercial THCp isn’t simply pulled out of cannabis flower. Instead, manufacturers generally use hemp-derived cannabinoids and other processes to produce usable amounts.
THCp chemical structure compared with delta 9 THC
THCp and delta-9 THC are closely related cannabinoids, but they aren’t the same.
One of the biggest differences is their chemical structure. THCp has a seven-carbon alkyl side chain, while delta-9 THC has a five-carbon side chain.
You don’t need a chemistry degree to understand why that matters. That small structural difference changes how THCp interacts with cannabinoid receptors.
The original research found that THCp has a much stronger binding affinity for CB1 receptors than delta-9 THC. That’s where the well-known “33x” comparison comes from.
is THCp 33 times stronger?
Not exactly.
THCp binds to CB1 receptors about 33 times more strongly than delta-9 THC in the laboratory testing reported in the original research.
But stronger receptor binding does not mean someone will feel 33 times higher.
The experience can depend on the dose, product type, how you consume it, your tolerance, and how your body processes cannabinoids.
So when comparing THCp vs THC, the practical takeaway is simple: THCp may have potent effects, so don’t assume you can use the same amount you would normally use with THC.
Because THCp can have potent effects, new users should start with a low dose and give it time before taking more. Don’t assume that a typical THC dose will translate directly to the same experience with THCp.
| feature | THCp | delta-9 THC |
|---|---|---|
| full name | tetrahydrocannabiphorol | delta-9 tetrahydrocannabinol |
| natural occurrence | trace amounts | more abundant in cannabis |
| alkyl side chain | seven carbon atoms | five carbon atoms |
| CB1 interaction | very high reported binding affinity | strong CB1 activity |
| psychoactive | yes | yes |
| human research | limited | much more extensive |
| commercial availability | common in some hemp-derived products | common in regulated cannabis products |
| research status | early and developing | extensive compared with THCp |
what does THCp feel like?
THCp is psychoactive, so it can produce effects similar to those associated with THC.
Potential THCp effects can include:
- euphoria
- relaxation
- altered perception
- changes in time perception
- increased appetite
- drowsiness
- impaired coordination
- changes in attention and memory
Some people may experience THCp as more intense than traditional THC. But everyone’s experience can be different, especially because research on THCp in humans is still limited.
The dose matters, too. Higher doses can increase the chance of unwanted effects.
how long do THCp effects last?
How long THCp lasts depends on the product and how you consume it.
Inhaled THCp hits faster than an edible because the cannabinoids enter the bloodstream through the lungs. Edibles take longer to kick in because they have to move through the digestive system first.
THCp effects may last for many hours, and some reports suggest effects can last up to 24 hours or more. However, there isn’t enough human research to say that everyone should expect effects to last that long.
If you’re trying THCp for the first time, don’t take more simply because you don’t feel it right away, especially with an edible.
And just like with other intoxicating cannabinoids, don’t drive or operate machinery after using THCp.
potential negative effects
Higher doses of potent psychoactive cannabinoids may increase the likelihood of unwanted effects.
Potential adverse reactions can include:
- anxiety
- paranoia
- dizziness
- rapid heart rate
- confusion
- drowsiness
- impaired coordination
- nausea
Early research has looked at THC-like activity and possible effects related to pain and appetite. Researchers have also found signs of anti-inflammatory activity in early studies.
THCp and mental health
THCp’s psychoactive effects are another reason to be thoughtful about dose.
Higher doses may increase the chance of anxiety, paranoia, dizziness, rapid heart rate, or other uncomfortable effects. People who are particularly sensitive to THC may want to be especially cautious with THCp.
If a cannabinoid has made you anxious or uncomfortable in the past, starting with a highly potent cannabinoid may not be the best place to experiment.
potential benefits of THCp
THCp is still a relatively new area of cannabis research, so it’s too early to make big claims about what it can do.
Early research has looked at THC-like activity and possible effects related to pain and appetite. Researchers have also found signs of anti-inflammatory activity in early studies.
Potential benefits being researched include:
- pain relief
- appetite stimulation
- anti-inflammatory effects
- other effects related to the endocannabinoid system
These are areas of research, not proven medical benefits.
If you’re considering THCp for a health concern, especially pain or another ongoing issue, talk with a healthcare provider rather than using THCp as a substitute for medical treatment.
will THCp show up on a drug test?
If you have an upcoming drug test, don’t assume THCp is a safe workaround.
Standard drug tests generally look for THC or THC metabolites rather than testing for every individual cannabinoid. Research on exactly how THCp and its metabolites behave in every type of drug test is still limited.
THCp products can also contain other cannabinoids, including THC, depending on how they’re made.
If you need to pass a drug test for work, sports, or another reason, the safest choice is to avoid THCp and other THC-like intoxicating products before testing.
It’s also smart to keep the product’s certificate of analysis, or COA. A batch-specific COA can show what cannabinoids were detected in the product and give you a better idea of what’s actually in the package.
is THCp legal?
The answer isn’t as simple as yes or no.
THCp’s legal status can depend on how the product was made, how much THC it contains, where you live, and how current federal and state laws define hemp-derived cannabinoids.
The 2018 Farm Bill created the federal hemp framework that helped drive the growth of hemp-derived cannabinoids. However, federal hemp rules were changed in 2025, with important changes scheduled to take effect in 2026.
Because of those changes, you shouldn’t assume that every hemp-derived THCp product is federally legal simply because it is labeled “hemp-derived.”
State laws can be even more restrictive. Several states have banned or restricted intoxicating hemp-derived cannabinoids, and individual states may treat THCp differently from other hemp-derived products.
If you’re wondering, check your state’s current cannabis and hemp laws before purchasing or using it.
how THCp is made: naturally occurring vs. semi-synthetic
This is where the difference between THCp natural and commercial THCP becomes important.
THCp occurs naturally in the cannabis plant, but only in trace amounts. There simply isn’t enough THCp in most cannabis flower to make large-scale extraction practical.
As a result, most commercial THCp products are produced through laboratory processing using hemp-derived cannabinoids or other cannabinoid starting materials.
You’ll often see terms like hemp-derived THCp, hemp-derived CBD, or hemp-derived cannabinoids used to describe these products.
That doesn’t necessarily mean the finished THCp was directly extracted from hemp plants.
Commercial production can involve chemical synthesis or other processing steps to create usable amounts of THCp.
For consumers, the important thing is less about memorizing the chemistry and more about knowing where the product came from and whether the manufacturer can back up what’s on the label.
Look for batch-specific testing before buying.
THCp products, dosing, and safer use
THCp products can appear in several forms, including:
- vapes
- distillates
- edibles
- gummies
- oils
- tinctures
- infused products
The format can make a big difference in how the experience feels.
Inhaled products generally produce effects faster, while edibles take longer and can last much longer.
If you’re new to THCp, start with a low dose. Don’t assume that your usual THC dose will work the same way with THCp.
Give the first dose enough time to take effect before considering more. This is especially important with edibles, where it can be easy to take too much while waiting for the effects to start.
Higher doses may increase the chance of negative effects such as anxiety, paranoia, dizziness, rapid heart rate, and heavy impairment.
It’s also a good idea to avoid alcohol when you’re figuring out your tolerance. Combining intoxicating substances can make impairment harder to predict.
And if you’re feeling the effects, don’t drive.
how to choose THCp products
Not all commercial THCp products are necessarily made the same way.
Before buying, look for a third-party certificate of analysis, or COA, that matches the specific product or batch.
A good COA should tell you:
- how much THCp was detected
- whether delta-9 THC was detected
- what other cannabinoids are present
- the batch or lot number
- when the product was tested
- which laboratory performed the testing
- whether the product was tested for contaminants
This matters because THCp products may contain varying levels of THCp.
A product that says “THCp” on the front isn’t enough information by itself. Third-party testing gives you a better idea of what’s actually inside.
When possible, buying from licensed cannabis retailers can also provide additional consumer protections, depending on your state’s laws.
what to know before trying THCp
THCp stands out because it’s both naturally occurring and unusually potent at the receptor level compared with delta-9 THC.
But there’s still a lot researchers don’t know.
THCp was only discovered in 2019, and human research is much more limited than the research available on traditional THC.
That doesn’t mean you need to be afraid of THCp. It does mean it’s worth approaching it with a little more caution.
Start low. Give it time. Don’t mix it with alcohol while you’re figuring out how it affects you. Don’t drive after using it. And look for third-party testing before buying.
FAQ
Is THCp naturally occurring?
Yes. THCp is a naturally occurring cannabinoid found in Cannabis sativa. However, it occurs in trace amounts, which makes extracting meaningful amounts directly from cannabis flower impractical.
What does THCp stand for?
THCp stands for tetrahydrocannabiphorol. You’ll also see it written as THC-P or THCp.
Is THCp stronger than delta-9 THC?
THCp has a much stronger reported binding affinity for CB1 receptors than delta-9 THC. The original research is where the commonly cited figure comes from.
That doesn’t mean THCp is literally 33 times more intoxicating. It means the two cannabinoids interact differently with CB1 receptors.
Is THCp the same as THC?
No. THCp and delta-9 THC are different cannabinoids, although they have similar structures and both produce psychoactive effects.
THCp has a seven-carbon alkyl side chain, while delta-9 THC has a five-carbon side chain.
Is THCp the same as THC-O?
No. THCp and THC-O are different cannabinoids. THCp occurs naturally in cannabis, while THC-O is a chemically modified cannabinoid produced through chemical processing.
Will THCp show up on a drug test?
It can be a drug-testing risk. Standard drug tests generally look for THC or THC metabolites, and THCp products may also contain THC.
If you need to pass a drug test, don’t rely on THCp being undetectable.
Is THCp safe?
There’s still a lot we don’t know about long-term THCp safety. Early research suggests it can produce potent cannabinoid effects, so start with a low dose and pay attention to how you respond.
What are the potential benefits of THCp?
Early studies have explored possible pain relief, appetite-related effects, and anti-inflammatory activity. However, these potential benefits haven’t been established through enough human research to make medical claims.
How long do THCp effects last?
Effects vary depending on the dose and product. Inhaled THCp generally takes effect faster than an edible. Effects may last for many hours, and some reports suggest they can last up to 24 hours or more.
Does THCp occur naturally in cannabis?
Yes. Researchers discovered THCp in Cannabis sativa in 2019. It occurs naturally, but only in trace amounts.
Is hemp-derived THCp legal?
It depends. Federal and state laws governing hemp-derived cannabinoids are changing, and some states have specifically restricted intoxicating hemp-derived cannabinoids.
Check the current laws in your state before purchasing or using THCp .
the takeaway
THCp is one of the newer cannabinoids getting attention, but it’s not completely new to cannabis. Researchers discovered that it occurs naturally in the cannabis plant back in 2019.
Its biggest claim to fame is its interaction with CB1 receptors. THCp binds to these receptors much more strongly than delta-9 THC, but the popular “33x stronger” claim shouldn’t be taken literally.
For consumers, the practical takeaway is simple: THCp can have potent psychoactive effects, so start low, take your time, and know what’s in the product you’re buying.
As cannabis research continues, we’ll learn more about how THCp works, how it compares with other cannabinoids, and what its long-term effects may be.
