There’s no FDA-approved pharmacotherapy for cannabis use disorder (CUD), but that doesn’t mean we’re powerless. Treatment involves a mix of supportive withdrawal management, behavioral strategies, and motivational work. The good news: most withdrawal is manageable. The challenge is keeping people engaged after the first week—when symptoms fade but the habit still looms.

Withdrawal
Most regular users experience some degree of withdrawal when they stop. The timeline is fairly predictable: symptoms start 24–48 hours after cessation, peak within the first week, and typically resolve by 10–14 days. The most stubborn symptom? Sleep. Insomnia often drags on for a month or more.

Common symptoms:

• Irritability
• Insomnia
• Anxiety and depressed mood
• Loss of appetite
• Headache
• Nausea
• Strange dreams (likely REM rebound)

Withdrawal severity doesn’t neatly correlate with dose. You can’t always predict it by THC levels alone, especially since many patients don’t know how much they’re taking. A better strategy: ask them what happened the last time they tried to quit. If they got sick, they’ll likely get sick again.

Medication support: Symptom-specific and practical
No meds treat the addiction itself, but you can ease the discomfort. These are outpatient-friendly options to have in your back pocket:

• Nausea: prochlorperazine 5–10 mg PRN
• Headache/muscle aches: acetaminophen or ibuprofen
• Sleep: trazodone 25–100 mg QHS (some prefer mirtazapine, but it’s more sedating)
• Irritability/anxiety: guanfacine 1–2 mg QHS (alpha-2 agonist, not habit-forming)
• Persistent anxiety/depression: SSRIs or SNRIs (start after acute withdrawal)
• Avoid benzodiazepines—you’re treating a substance use disorder, not replacing it

Some patients ask about dronabinol (Marinol) or nabiximols (Sativex)—both THC-based. While they’ve shown some benefit for withdrawal in research, they’re not recommended as first-line treatments, especially if the goal is abstinence. Trying to taper with THC is a slippery slope, and dose control is difficult outside of structured trials.

Behavioral treatment
Many patients aren’t ready to quit completely. That’s fine. Start where they are and work from there.

• Try a “trial reduction”: “Let’s go from 6 joints to 3 and see how you feel.”
• Frame it as an experiment: “This will help us figure out if cannabis is helping or hurting.”
• A 1-month abstinence trial is a solid window to assess impact
• Normalize lapses. Emphasize that reduction is still progress.

Behavioral treatments like CBT, motivational enhancement therapy, and contingency management can help—especially when cannabis use is tied to emotional triggers or boredom. If you’re not doing therapy yourself, refer to someone who’s comfortable working with substance use and ambivalence.

Group support: Consider NA, with caveats
12-step programs like Narcotics Anonymous can work—even for cannabis, even if the name says otherwise. Many NA members have used cannabis as a primary or secondary drug. That said, some groups don’t see cannabis as a “real drug.” Ask your patient how the meeting felt. If it didn’t click, suggest trying a different one—or explore other support options like SMART Recovery or individual therapy.

Family involvement
Parents may be more motivated than their kids. Discussing brain development and long-term consequences (like chronic cannabis syndrome) can be a wake-up call. Educate families about what to expect during withdrawal and how to support without enabling.