Is It Safe to Take Buspirone and Marijuana Together?

Plenty of people who take buspirone also use cannabis, and for most of them the combination is usually tolerated without serious trouble in the short term.1Thoroughbred Recovery and Wellness. What Are the Risks of Buspirone and Weed Together? The main concern is a quieter interaction in which cannabis can leave more buspirone in your body than your dose intends.2Thoroughbred Recovery and Wellness. What Are the Risks of Buspirone and Weed Together? The form of cannabis matters more than the fact of using it, since some products raise the risk far more than others. The rare serious danger mostly concerns people who also take an antidepressant.

How Cannabis Can Raise Your Buspirone Level

Your liver clears buspirone mainly through one enzyme.3Food and Drug Administration. BuSpar (buspirone hydrochloride tablets, USP) When that enzyme is blocked, the body forms almost none of buspirone’s normal breakdown products.4PubMed. Cytochrome P450 3A-mediated metabolism of buspirone in human liver microsomes Buspirone is considered highly sensitive to anything that slows this enzyme, which can leave more active drug circulating.5Thoroughbred Recovery and Wellness. What Are the Risks of Buspirone and Weed Together?

CBD blocks that enzyme, and among the cannabis compounds tested it was the clearest blocker.6PubMed Central. Cannabinoid Metabolites as Inhibitors of Major Hepatic CYP450 Enzymes, with Implications for Cannabis-Drug Interactions THC can also slow it at high enough amounts.7PubMed Central. Drug Interactions of Tetrahydrocannabinol and Cannabidiol in Cannabinoid Drugs

If clearance slows, the same tablet delivers more drug, acting like a bigger dose than prescribed. The extra drug works through buspirone’s familiar effects, so expect more dizziness, nausea, or headache rather than a strange new symptom. Regular use matters too. CBD taken daily can keep the enzyme slowed day after day, so the change may build gradually instead of appearing after one session. If your side effects crept up after you started a daily CBD routine, that timing is worth raising with your prescriber.

This interaction is easy to miss. Buspirone usually isn’t very sedating, so new sleepiness may get blamed on stress, poor sleep, or the cannabis itself. Many people never mention CBD oil because they see it as a harmless supplement. Also, pharmacy interaction checkers are built around prescription drugs, so they may not list a CBD oil bought in a shop or online. A clean result isn’t proof of safety. Tell your pharmacist the product by name and dose so they can look at it directly.

Why Edibles and CBD Oil Carry More Risk Than Smoking

CBD oils, capsules, and edibles reach high concentrations in the gut and liver, exactly where buspirone is broken down.8Thoroughbred Recovery and Wellness. What Are the Risks of Buspirone and Weed Together? Less buspirone is cleared on its first pass through the body, and more reaches your bloodstream.9Thoroughbred Recovery and Wellness. What Are the Risks of Buspirone and Weed Together? In healthy volunteers, CBD raised levels of another drug cleared by these enzymes about 3.4 times.10Thoroughbred Recovery and Wellness. What Are the Risks of Buspirone and Weed Together? Computer models suggest levels of very sensitive drugs like buspirone could rise much more.11Thoroughbred Recovery and Wellness. What Are the Risks of Buspirone and Weed Together?

Meaningful drug interactions are thought likely mainly above about 300 mg of CBD a day or 30 mg of THC a day.12PubMed Central. Drug Interactions of Tetrahydrocannabinol and Cannabidiol in Cannabinoid Drugs Buspirone’s extra sensitivity, though, means lower amounts could still matter for some people.

To check a CBD product against that line, find the total CBD in the bottle and the amount per serving, then multiply by the number of servings you take in a day. A gummy or a few drops a day usually adds up to well under 300 mg, while high-strength medical-style oils can get much closer. Full-spectrum products contain THC as well as CBD, so count both against their own thresholds. Labels on unregulated products can be inaccurate, so treat your number as an estimate. And since 300 mg is a rough line drawn for most drugs, being under it isn’t a guarantee with buspirone.

Smoked or vaped THC passes through the gut far less, so it probably slows buspirone’s breakdown less.13Thoroughbred Recovery and Wellness. What Are the Risks of Buspirone and Weed Together? Still, frequent heavy inhalation can keep blood levels high enough to affect the liver enzyme.14Thoroughbred Recovery and Wellness. What Are the Risks of Buspirone and Weed Together? The risk from inhaled cannabis is uncertain but considered lower than from oral CBD.15Thoroughbred Recovery and Wellness. What Are the Risks of Buspirone and Weed Together? An occasional joint sits at the low end of the risk; daily edibles or several CBD doses a day sit at the high end.

Side Effects That Get Stronger When You Combine Them

Both buspirone and cannabis can cause dizziness and lightheadedness, and together the effect can be stronger.16Thoroughbred Recovery and Wellness. What Are the Risks of Buspirone and Weed Together? THC can make you drowsy, and a raised buspirone level may add tiredness that buspirone alone usually doesn’t cause.17Thoroughbred Recovery and Wellness. What Are the Risks of Buspirone and Weed Together? Cannabis also slows short-term memory and reaction time, and buspirone may add to that.18Thoroughbred Recovery and Wellness. What Are the Risks of Buspirone and Weed Together? Driving and operating machinery are the main everyday concern.19Thoroughbred Recovery and Wellness. What Are the Risks of Buspirone and Weed Together? Your reactions behind the wheel can be slower without you feeling impaired, so avoid driving in the hours after use, especially with a new product.

To tell an interaction from your normal high, compare against what the same product usually does. A high that feels heavier or lasts longer than usual may point to an interaction and not just stronger cannabis. Dizziness that appears only on days you take CBD is one clue that CBD may be changing your buspirone level. If side effects began after your buspirone dose went up, the higher dose can stack with cannabis in the same way. Keeping track of when symptoms appear helps sort these cases out, and it gives your prescriber something concrete to work from.

Serotonin Syndrome and Who Should Worry About It

Buspirone acts on one type of serotonin receptor in the brain.20Thoroughbred Recovery and Wellness. What Are the Risks of Buspirone and Weed Together? Serotonin syndrome, a reaction to too much serotonin activity, is rare with buspirone alone.21Thoroughbred Recovery and Wellness. What Are the Risks of Buspirone and Weed Together? It has been reported when buspirone was added to an SSRI antidepressant such as fluoxetine.22Thoroughbred Recovery and Wellness. What Are the Risks of Buspirone and Weed Together?

If you take buspirone with an SSRI, SNRI, or MAOI, CBD that raises your buspirone level could in theory add to the risk.23Thoroughbred Recovery and Wellness. What Are the Risks of Buspirone and Weed Together? CBD may also act on the same serotonin receptor, at least in animal studies.24PubMed Central. Cannabidiol attenuates catalepsy induced by distinct pharmacological mechanisms via 5-HT1A receptor activation in mice So anyone on buspirone plus an antidepressant has the most reason to be cautious with CBD.

SSRIs include sertraline, fluoxetine, and escitalopram, and SNRIs include venlafaxine and duloxetine, so check whether your antidepressant is on those lists. Buspirone is often prescribed as an add-on to one of these, so many readers are in the group that needs extra care. MAOIs are an older antidepressant class with a stronger link to serotonin problems, and they need particular care with buspirone. A pharmacist can tell you which of your medicines affect serotonin, and it’s a quick question to ask when you pick up a refill.

For cannabis users, serotonin syndrome is a rare and largely theoretical concern. If you take buspirone without an antidepressant, your more likely problem is the dizziness and drowsiness covered above.

Warning Signs That Need Prompt Medical Help

If these appear after combining buspirone and cannabis, contact your provider right away, because they may signal serotonin syndrome or too much buspirone.30Thoroughbred Recovery and Wellness. What Are the Risks of Buspirone and Weed Together? Seizures and hallucinations are rarer, more serious possible side effects. For high fever, seizures, or fainting, go to emergency care rather than waiting.

When you reach a clinician, say exactly which cannabis product you used, how much, and how you took it, since smoked THC and swallowed CBD oil mean different things to them. List every medication you take, including any antidepressant, and say when you took your last buspirone dose. Tell them when the symptoms began and whether they are getting better or worse, because timing helps separate a drug interaction from other causes.

How to Lower the Risk if You Keep Using Cannabis

Your prescriber may start buspirone at the low end, for example 5 mg twice a day, and increase it gradually every five to seven days.31Thoroughbred Recovery and Wellness. What Are the Risks of Buspirone and Weed Together? Check for dizziness and drowsiness at each step.32Thoroughbred Recovery and Wellness. What Are the Risks of Buspirone and Weed Together? Take oral CBD several hours apart from buspirone, about 3 to 4 hours as a reasonable start, though the best gap isn’t known.33Thoroughbred Recovery and Wellness. What Are the Risks of Buspirone and Weed Together? Watch for stronger side effects whenever you switch to a stronger product, since your buspirone dose or timing may need adjusting.34Thoroughbred Recovery and Wellness. What Are the Risks of Buspirone and Weed Together?

Avoid driving until you know how the combination affects you.35Thoroughbred Recovery and Wellness. What Are the Risks of Buspirone and Weed Together? Tell your doctor and pharmacist about every cannabis product, including dose, route, and frequency.36Thoroughbred Recovery and Wellness. What Are the Risks of Buspirone and Weed Together? Hiding CBD use can make side effects look like the medication is wrong for you, which may lead to a needless switch or dose change. Don’t swap buspirone for cannabis on your own; any change belongs in a talk with your doctor.37Leafwell. Can You Use Marijuana If You Take Buspirone, AKA BuSpar

If you keep using cannabis, the lower-risk choices are occasional inhaled use over daily high-dose edibles, and avoiding large CBD doses near the 300 mg range. Make one change at a time so you can tell what caused any effect.

A simple log helps. For the first few weeks, jot down each day’s cannabis product, amount, and time, along with when you took buspirone. Rate dizziness and drowsiness on a simple scale so patterns become visible, such as symptoms that show up only after CBD. Bring the notes to your follow-up visit so your prescriber can adjust your dose using real information instead of guesses.

Does Buspirone Help You Cut Back on Marijuana

Buspirone was tested as a treatment for cannabis dependence and did not reduce use more than a placebo.38PubMed Central. Buspirone Treatment of Cannabis Dependence: A Randomized, Placebo-Controlled Trial Women given buspirone actually did worse on cannabis use than women given placebo.39PubMed Central. Buspirone Treatment of Cannabis Dependence: A Randomized, Placebo-Controlled Trial If cutting back is your goal, ask about other kinds of support rather than counting on buspirone.

Anxiety can rise temporarily when heavy cannabis use stops, so a spike in the first weeks doesn’t mean your anxiety treatment has failed. Buspirone may still help treat your anxiety even though it didn’t reduce cannabis use in the trial. Counseling approaches, such as motivational and behavioral therapies, are the main proven support for reducing cannabis use. If you want to cut back, tell your prescriber so they can plan around changes in your anxiety and your buspirone levels.