Do cannabis gummies relieve pain?

Cannabis gummies hold THC, CBD, or both. THC is the compound that causes a high. CBD does not. Evidence for pain relief is mixed. A 2017 National Academies review found substantial evidence for THC in chronic pain in adults. Evidence for CBD alone in pain is thin. The FDA has not approved any cannabis product for pain.

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How THC and CBD act on the body

THC binds CB1 receptors in the brain and spinal cord, and CB2 receptors on immune cells. CB1 activation dampens pain signals. CBD binds both receptors with low affinity. CBD may raise levels of anandamide, a natural endocannabinoid. Gummies pass through the liver, so the body converts THC into 11-hydroxy-THC, a compound with stronger effects.

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What studies show

Trials of nabiximols, an oral spray with THC and CBD, report small drops in pain scores in multiple sclerosis and cancer pain. The drops were about 0.4 points on a 10-point scale. Trials of CBD for arthritis and neuropathy show no clear gain over placebo. Many trials were short and enrolled few people. Reviews rate the overall quality of evidence as low to moderate.

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Dosing

Start low. A common starting dose for edibles is 1 mg to 2.5 mg THC. A standard dose in legal markets is 5 mg to 10 mg. States with legal cannabis cap one serving at 10 mg THC. Wait 2 hours before you take more. Do not redose on the first night. THC content on a label can differ from the actual amount in the gummy. A 2021 study of 24 edible products found label errors in most samples.

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Onset and duration

Edibles go through the stomach and liver. Onset is 30 minutes to 2 hours. Peak blood levels arrive at 1 to 3 hours. Effects last 4 to 8 hours. Inhaled THC peaks in minutes. This gap causes most edible overdoses. Symptoms include nausea, fast heart rate, and panic.

Legal status in the US

Federal law lists cannabis as a Schedule I drug. The 2018 Farm Bill legalized hemp with delta-9 THC at or below 0.3 percent on a dry weight basis. Hemp gummies that follow that limit can ship to states where hemp is legal. State rules differ. Some states ban THC above set limits. Some ban all hemp-derived intoxicating products. Check state law before you buy.

Side effects and risks

Common effects: dry mouth, red eyes, drowsiness, dizziness, fast heart rate, and anxiety. High THC doses raise the risk of panic and vomiting. Cannabis use during pregnancy is not advised. Heavy use in teens may affect memory and attention. Gummies do not involve smoke, so they carry no lung risk from combustion.

Drug interactions

THC and CBD use the liver enzymes CYP2C9, CYP2C19, and CYP3A4. CBD can raise blood levels of clobazam and warfarin. Ask a pharmacist if you take blood thinners, seizure drugs, or sedatives. Alcohol plus THC increases impairment.

Talk to a clinician

Ask a clinician before you use cannabis gummies for pain. Bring a list of your drugs and doses. Pain has many causes. A gummy can mask a problem that needs care.