Cannabis Terpenes: What They Are and What Studies Show

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Terpenes are the compounds that give cannabis and many other plants their smell and taste. Some act on cells in lab and animal studies, and a 2026 cell study found several partly activated cannabinoid receptors, but their medical effects in people are mostly unproven. Our earlier post covers cannabinoids, the main active compounds.

But cannabinoids aren’t the only interesting chemical compounds inside the cannabis plant. There’s another class of compounds that shapes how cannabis smells and tastes, and researchers are studying whether it also changes how cannabis works.

They’re called terpenes, and the same compounds give pine, lavender and citrus their smell.

Whether they also change how cannabinoids act is a separate question, and it has not been proven in people.

Six common terpenes are covered below. Knowing them helps you read a lab label, though no terpene profile is proven to make a product more effective. Other terpenes get their own guides, such as terpinolene and its effects.

What Are Terpenes?

Many plant species, including marijuana, produce terpenes as part of their overall survival strategy.

Terpenes give various plants their specific odors and flavors. Citrus fruits, herbs and many other plants all smell and taste the way they do because of terpenes. Oranges, mangoes, ginger, eucalyptus and pine needles are examples.

Therefore, if you just can’t get enough of the smell and flavor of your favorite marijuana strain, whether it’s Cheese, Bubba Kush or White Widow, you probably have terpenes to thank for that.

What they do in the body is much less clear.

Terpenes and “the Entourage Effect”

Cannabinoids and terpenes are both produced in the trichomes of the marijuana plant. Some researchers think they work together, an idea known as “the entourage effect,” which has not been proven in people.

Lab studies are still sorting out whether terpenes act on cannabinoid receptors: beta-caryophyllene binds the CB2 receptor, and a 2026 cell study found several terpenes partly activated CB1 and CB2.

Claims that terpenes help cannabinoids cross the blood-brain barrier or work faster have not been shown in people.

Whether terpenes change mood is an open question, and no study shows that they explain differences in mood between strains. Linalool, the terpene found in lavender, is covered in our linalool guide.

Do Terpenes Explain Sativa and Indica Effects?

If you use medical marijuana on a regular basis, then you’re probably familiar with the two main types of marijuana: sativas and indicas.

Sativas are often described as energizing, what many call a “cerebral high,” but a 2022 study found that sativa and indica labels do not consistently match a product’s chemistry. THC from any type can impair driving and work.

Indicas are often described as more sedating. They have not been shown to treat pain, insomnia or anxiety better than other types, and any sedating product is a reason not to drive.

So why do sativas and indicas seem to feel so different?

A popular answer is terpenes.

We’re talking specifically about the terpene known as myrcene. The claim is that cannabis above a set myrcene level causes indica’s “couchlock,” but we found no published study that supports a cutoff, and the 2022 study found that labels do not reliably track chemistry.

For a sativa or an indica alike, the THC and CBD content on the lab label tells you far more about potency than any terpene percentage.

Which Terpenes Are Common in Cannabis?

Now let’s look at what research says about these 6 terpenes that might show up in your medical marijuana products. If you know the terpene profile of a marijuana strain, you know more about its aroma and flavor, though not whether it will work better for you.