CBN Produced Tolerance, Withdrawal Signs in Mice — SkimNews
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- CBN was administered to mice twice a day for three consecutive days; their response diminished as treatment continued, and after withdrawal the animals showed head twitching and paw fluttering.
- THC-trained mice reacted similarly to CBN, suggesting overlapping subjective effects and shared involvement in receptor systems associated with THC dependence.
- CBN demonstrated anti-inflammatory effects, including at lower, non-psychoactive doses, but it also reduced the body’s ability to defend itself during a simulated bacterial challenge.
- Drug and Alcohol Dependence published the mouse research in its November 2026 issue under the title “Tolerance, physical dependence, and Δ9-THC-like interoceptive effects of cannabinol in mice.”
- The mouse experiments did not establish that CBN causes dependence or withdrawal in people; the researchers called for human studies of frequent use, higher doses and extended use.
- Olivia Vanegas said minor-cannabinoid marketing contains “so many therapeutic claims” despite researchers knowing little about risks, especially from repeated use.
- Steven Kinsey noted that CBN now appears in gummies, tinctures and capsules sold as a “safe, herbal sleep supplement,” warning that repeated use may carry risks and telling consumers to “buyer beware.”
Why it matters: For sleep-supplement users, the finding that twice-daily CBN exposure over three days produced tolerance and withdrawal-like behavior in mice makes repeated use a “buyer beware” issue, though it does not establish human addiction. The same experiments also recorded reduced immune defense during a bacterial challenge, a separate concern that habit-formation framing alone can miss.
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