Why it matters
Myrcene is the most abundant terpene in many cannabis cultivars. It is also present in hops, lemongrass, mango, and bay leaves. In animal models myrcene has muscle-relaxant and sedative effects and is thought to contribute to the “couch-lock” character of myrcene-dominant cultivars.
In practice
On a COA, myrcene percentages above ~0.5% are typical for cultivars marketed as relaxing. Below ~0.2%, terpenes like limonene or pinene tend to dominate and the subjective profile shifts.
Common confusion
“Eat a mango before smoking” cannabis folklore claims myrcene from the fruit potentiates the high. The evidence is weak — the myrcene dose from a single mango is small relative to what’s already in the flower.
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