Terpenes in Medicinal Cannabis: Why They Matter (and Why Your Vaporiser Temperature Matters Too)

Most people assume THC is what makes one cannabis strain different from another. But if THC were the only active ingredient, every strain would feel the same. The reason one product feels uplifting while another makes you sleepy is because cannabis contains hundreds of other compounds — especially terpenes. This mix of cannabinoids + terpenes + other plant compounds is called the entourage effect.

In other words: it's not just what you vape — it's how you vape it. And temperature is a big part of that.

What are terpenes?

Terpenes are the aromatic compounds in cannabis that give it its smell — citrus, pine, earthy, floral, spicy. They're also found in everyday plants like lavender, basil and lemongrass. In cannabis, terpenes work alongside THC and CBD to influence the overall effect.

Each terpene has its own boiling point, meaning different temperatures release different compounds. That's why changing your vaporiser temperature actually changes the effect of the same product.

Here's a quick overview of some common cannabis terpenes, their boiling points, and what they're commonly associated with:

• **Myrcene (~168°C)** – earthy, musky – associated with sedation, relaxation, muscle relief
• **Limonene (~176°C)** – citrus, lemon – associated with mood support, alertness
• **Caryophyllene (~130°C)** – peppery, spicy – associated with anti-inflammatory, stress relief
• **Pinene (~155°C)** – pine, fresh – associated with alertness, focus, bronchodilation
• **Linalool (~198°C)** – floral, lavender – associated with relaxation, anxiety reduction
• **Terpinolene (~185°C)** – herbal, piney – associated with calming, mild sedation

Why does vaporiser temperature matter?

When you use a dry herb vaporiser, the temperature setting determines which terpenes and cannabinoids are released.

THC boils at around 157°C. Most terpenes boil between 130°C and 200°C. If you vape too low, you won't release the full range of terpenes. Too high, and you risk burning off delicate flavours or irritating your throat.

Understanding this gives you more control over the effect of the same product.

Low temps (around 160–175°C)

• More flavour, lighter effects
• Ideal for daytime use
• Will activate myrcene, limonene, and pinene
• Good for a "clear-headed" experience

Medium temps (about 176–190°C)

• More complete terpene + cannabinoid release
• Good for pain and anxiety symptom control
• Many patients find this the "sweet spot"

Higher temps (about 190–205°C+)

• Warmer vapour, sometimes a little harsher
• Useful if your strain is rich in linalool or terpinolene, which boil higher
• Can feel more sedating, so often used at night

Example: targeting sleepier effects

Let's say you have a myrcene-dominant strain. Myrcene boils at around 168°C, so setting your vape to 165–175°C will help express that terpene and may give you a more relaxing or sedating effect. But some other sleep-associated terpenes — linalool (~198°C) and terpinolene (~185°C) — need higher temperatures to really come through. That's why some strains only feel truly sedating once you push the temperature higher.

Can I use this with oils or just flower?

This temperature guide is most relevant for dry herb vaporisers. Oils and capsules aren't affected by vaporiser temp. However, knowing the terpene profile of your oil product can still help explain why one formula feels more "uplifting" and another more "sedating."

For those using concentrated or extract-based products, it's also worth understanding the full spectrum of cannabinoids at play.

Summary

• THC alone doesn't tell the full story.
• Terpenes are a major contributor to how a product feels.
• Vaporiser temperature determines which terpenes are released.
• Start low and experiment — your ideal temperature may change depending on the product or time of day.