Cannabis offers a treasure trove of compounds that contribute to its unique aroma, flavor, and effects. Among these compounds, terpenes are the unsung heroes that play a crucial role in shaping the cannabis experience. In the start of our new series, we’re going to explore one terpene each month that helps create the wonderful effects we know and love. To start us off, our first terpene of the month: limonene. 

What is Limonene? 

Limonene is a naturally occurring terpene found not only in cannabis but also in various fruits like lemons, oranges, and grapefruits. Its distinctive citrus aroma makes it instantly recognizable. In cannabis, limonene is typically found in higher concentrations in strains like Lemon Haze, Lemon Skunk, and Super Lemon OG. 

The Aroma and Flavor 

The most obvious characteristic of limonene is its zesty, lemony aroma. When you encounter a cannabis strain rich in limonene, the scent is reminiscent of freshly squeezed lemonade on a sweltering summer day. This delightful fragrance isn’t just a treat for your nose; it also translates into a refreshing and citrusy flavor when consumed.

Chemical Composition 

Limonene consists of two isomeric forms, d-limonene and l-limonene, sharing the chemical formula C10H16 but differing in spatial arrangement. The “d” and “l” denote clockwise and counterclockwise rotations of polarized light, respectively. D-limonene, the dominant isomer in cannabis, provides the distinct citrusy aroma associated with lemon and orange peels. Limonene is classified as a monocyclic monoterpene, with a cyclic structure formed by two isoprene units. This chemical structure underlies its unique properties, contributing to its delightful aroma, flavor, and potential therapeutic effects in cannabis and other natural sources. Lab testing in cannabis reveals limonene’s presence as a percentage of the total terpene content, highlighting its significance in the plant’s composition and interaction with the endocannabinoid system. 

Effects and Benefits

Beyond its aromatic qualities, limonene offers a range of potential benefits for cannabis users: 

  • Elevated Mood: Limonene is believed to have mood-enhancing properties. Some users report feeling more uplifted and cheerful after consuming strains high in limonene. 
  • Stress Reduction: Limonene may help reduce stress and anxiety levels. Its calming effects can provide relief for individuals dealing with stress-related conditions. 
  • Antioxidant Properties: Like many terpenes, limonene is known for its antioxidant properties. Antioxidants help protect cells from damage caused by free radicals and may have long-term health benefits. 
  • Anti-Inflammatory: Limonene has demonstrated anti-inflammatory properties in preclinical studies. This makes it an interesting candidate for research into treating inflammatory conditions. 
  • Digestive Aid: Some users have reported that limonene-rich strains help with digestive issues like indigestion and heartburn. 

Potential Medical Applications 

While further research is needed to fully understand the medical potential of limonene, some promising areas include: 

  • Cancer Treatment: Limonene has shown potential as an anti-cancer agent in animal studies. Research suggests it may inhibit the growth of cancer cells, particularly breast cancer. 
  • Weight Management: Limonene may aid in weight management by promoting the breakdown of fat. 
  • Pain Relief: Some users have reported that limonene-rich strains offer pain relief, particularly for headaches and migraines.

Finding Limonene in Cannabis 

If you’re interested in experiencing the effects of limonene, there are a few tips for finding strains rich in this terpene: 

  • Check Strain Information: Look for strains that are known to contain prominent levels of limonene. Strains with “Lemon” or “Citrus” in their names are good candidates. 
  • Lab Testing: In regions where cannabis is legalized, you can check lab test results for terpene profiles. Limonene should be listed among the terpenes present. 
  • Aroma and Flavor: Trust your senses. If a strain smells and tastes strongly of citrus, it likely contains limonene. 


Limonene is a fascinating terpene that not only adds a delightful citrusy aroma and flavor to cannabis but also offers a range of potential benefits. From its mood-enhancing effects to potential medical applications, limonene is a terpene worth exploring for both recreational and therapeutic purposes. Just remember, the world of cannabis is complex and multifaceted, so individual experiences with limonene-rich strains may vary. Always start with a low dose and consult a healthcare professional if you have specific medical concerns. Limonene is also one of more than 20 terpenes that Encore Labs tests for, so if you want to see how much limonene is in your product, feel free to contact us