Weed for IBS: What the Latest Research Says

IBS has a way of throwing off your day. One minute you’re fine, the next you’re dealing with cramps, urgent bathroom runs, or the stress of wondering when the next flare-up will strike.

You’re not alone. The CDC estimates that 10% to 15% of Americans live with this condition, which means millions of people are dealing with it, too.

Because standard treatments can be hit-or-miss, some patients wonder whether using weed for IBS might help manage their symptoms. 

But does weed actually help, or is the science still catching up? Here’s what researchers know so far.

What Is IBS?

Irritable bowel syndrome (IBS) is a gut disorder that throws the digestive system out of rhythm. Unlike inflammatory bowel disease (IBD), which leaves visible damage doctors can spot during testing, IBS is trickier since tests don’t always explain what’s going on.

Symptoms of IBS

IBS doesn’t look the same for everyone, and symptoms can show up without warning. Common issues include:

• Abdominal pain or cramps.
• Constipation.
• Diarrhea.
• Gas and bloating.
• Mucus in the stool.
• Urgent or difficult bowel movements.

Some people also deal with fatigue, nausea, or urinary problems during flare-ups. They’re not life-threatening, but they can wear you down.

Causes and Risk Factors for IBS

Researchers haven’t pinned down one cause for IBS, but studies suggest several factors may be involved, including:

• Stress or early-life trauma.
• Changes in the gut bacteria (microbiome).
• Intestinal muscle contractions.
• Nervous system issues.
• Infections or severe illness.
• Food sensitivities or dietary triggers.

Stressful situations, alcohol, or even certain medications can push symptoms into overdrive.

How Is IBS Typically Treated?

Since there’s no cure, treatment usually focuses on managing symptoms. Doctors may recommend:

• Dietary changes (like increasing fiber, reducing gluten, or following a low FODMAP diet).
• Probiotics or other supplements to support gut health.
• Stress management or mental health therapy.
• Prescription medications for more severe cases.

Managing IBS often means trying a few different approaches until something clicks.

What Does the Latest Research Say About Cannabis and IBS?

Research on cannabis and IBS is still new, but some studies suggest cannabis compounds may help with stomach discomfort and digestion. Still, the evidence is far from conclusive.

What the Studies Show

A nationwide study of more than 7,000 IBS patients found cannabis use was linked to fewer hospital readmissions and lower costs.¹ Other studies suggest cannabinoids may calm inflammation, dial down pain, and affect how the gut and brain talk to each other.²

The body’s endocannabinoid system (ECS) helps regulate digestion, mood, and immunity. When it’s off balance, you may notice gut changes, pain, fatigue, or migraines,³ which helps explain why researchers are paying attention to cannabinoids.

Lab studies show that activating cannabinoid receptors may affect motility and sensitivity.⁴ In small groups, synthetic THC (dronabinol) helped relax the colon and reduce pain.¹ Another group of resarchers found that THC may also relieve muscle contractions, regulate stomach acid, and even protect against ulcers.⁵

Outside the lab, survey data show a similar trend. In one large U.S. study, people who recently used cannabis reported constipation less often than non-users.⁶

Risks and Interactions

The evidence isn’t all positive. Research on cannabis and IBS is still limited, and more long-term research is needed before drawing conclusions. THC-rich cannabis, especially at higher doses, can sometimes trigger anxiety, paranoia, or panic.⁷

Research doesn’t show how cannabis interacts with IBS medications. Combining them without talking to a doctor could potentially reduce effectiveness or cause side effects.

What About CBD and IBS?

Early research suggests CBD could offer some relief for IBS symptoms.

What Studies Show

CBD interacts with the body’s endocannabinoid system (ECS), which helps manage digestion, pain, and inflammation. Some early studies suggest CBD might calm gut inflammation, affect how food moves through the intestines, and affect signaling between the brain and gut.²

A 2023 review found potential evidence that CBD may change the way intestines move food along, linking to issues like constipation and diarrhea.⁸ There’s also a published case report of a patient who felt better taking 25 milligrams of CBD three times a day.⁹ 

Of course, one patient doesn’t prove much, but it shows why researchers are interested. For now, most agree we need bigger, better trials before CBD can be considered anything more than a maybe.

Risks and Interactions

CBD is usually well-tolerated, but it can cause issues for some. Reported side effects include sleepiness, fatigue, changes in appetite, and diarrhea, not exactly welcome news for people already struggling with IBS.²

Longer-term data offers some reassurance. One study found regular CBD didn’t significantly affect liver enzymes in healthy adults, but higher doses raise questions about safety and how CBD interacts with other medications. 

Since CBD can change how the body processes certain drugs, it may make prescriptions less effective or amplify side effects.

What Does Current Research Say About Terpenes and IBS Symptoms?

Research is still early, but some studies suggest they may work better as a team than on their own.

• Geraniol: Found in lemongrass and roses, this floral terpene has been tested in IBS patients and linked to less cramping and bloating, especially in mixed-type IBS.¹⁰
• Pinene: Research shows that this fresh and piney terpene may calm irritation in the gut.¹¹
• Humulene: It has a woody and herbal note and is linked to relieving gut pain and bloating.¹²
• Myrcene: Famous for its couchlocking effects, myrcene may also reduce cramps and stomachaches.¹³
• Beta-caryophyllene: Research suggests that this peppery terpene may reduce pain and protect the stomach lining.¹⁴

Best Strains for IBS According to Patients

These five strains come up again and again among IBS patients for the relief they bring during flare-ups. However, that’s based on what patients say, not research.

Platinum Cookies

Platinum Cookies is a THC-heavy cross of Durban Poison and OG Kush with a sweet, spicy kick. Its blend of caryophyllene, myrcene, and limonene may help explain why patients often report less cramping and inflammation.

Blackberry Kush

Blackberry Kush pops with purple buds and a fruity-gassy aroma. Packed with THC, limonene, myrcene, caryophyllene, and pinene, it’s one patients often reach for when they want to relax and calm stomach pain.

Grape Ape

Grape Ape, a cross of Afghani, Mendocino Purps, and Skunk #1, has a fruity-earthy flavor with caryophyllene, pinene, myrcene, and some CBG. Patients often mention that it helps with both IBS-M and IBS-C flare-ups.

Ghost OG

Ghost OG hits you with a bright citrus and fresh pine aroma thanks to its limonene, pinene, and myrcene content. With around 18% THC, it’s known to deliver a relaxing and balanced high that patients say helps melt stress and reduce abdominal pain during flare-ups.

Gorilla Cookies

Gorilla Cookies, a cross of Gorilla Glue #4 and Thin Mint GSC, has an earthy, nutty flavor from caryophyllene and myrcene. Patients describe it as uplifting and calming, with many saying it helps with pain, nausea, and stress, all big IBS triggers.

Can You Get a Medical Card for IBS?

It depends on where you live. A handful of states, including Illinois, Ohio, and Minnesota, specifically list IBS as a qualifying condition. 

In other states, patients may still qualify if a doctor signs off on related issues like chronic pain, cramping, or other symptoms that can make it tough to function day to day.Because every state plays by its own rules, the best step is to look up your state’s list of qualifying conditions or ask your doctor what applies to you. You may qualify for IBS in your state after all.

References

1. Choi C, Abougergi M, Peluso H, Weiss SH, Nasir U, Pyrsopoulos N. Cannabis Use is Associated With Reduced 30-Day All-cause Readmission Among Hospitalized Patients With Irritable Bowel Syndrome: A Nationwide Analysis. J Clin Gastroenterol. 2022;56(3):257-265. doi:10.1097/MCG.0000000000001498 ↩︎
2. Gotfried J, Naftali T, Schey R. Role of Cannabis and Its Derivatives in Gastrointestinal and Hepatic Disease. Gastroenterology. 2020;159(1):62-80. doi:https://doi.org/10.1053/j.gastro.2020.03.087 ↩︎
3. Brugnatelli V, Turco F, Freo U, Zanette G. Irritable Bowel Syndrome: Manipulating the Endocannabinoid System as First-Line Treatment. Frontiers in Neuroscience. 2020;14. doi:https://doi.org/10.3389/fnins.2020.00371 ↩︎
4. Hornby PJ, Prouty SM. Involvement of cannabinoid receptors in gut motility and visceral perception. British Journal of Pharmacology. 2004;141(8):1335-1345. doi:https://doi.org/10.1038/sj.bjp.0705783 ↩︎
5. Goyal H, Singla U, Gupta U, May E. Role of cannabis in digestive disorders. European Journal of Gastroenterology & Hepatology. 2017;29(2):135-143. doi:https://doi.org/10.1097/meg.0000000000000779 ↩︎
6. Adejumo AC, Flanagan R, Kuo B, Staller K. Relationship Between Recreational Marijuana Use and Bowel Function in a Nationwide Cohort Study. American Journal of Gastroenterology. 2019;114(12):1894-1903. doi:https://doi.org/10.14309/ajg.0000000000000441 ↩︎
7. Turner AR, Spurling BC, Agrawal S. Marijuana Toxicity. In: StatPearls [Internet]. StatPearls Publishing; 2023. https://www.ncbi.nlm.nih.gov/books/NBK430823/ ↩︎
8. Story G, Briere CE, McClements DJ, Sela DA. Cannabidiol and Intestinal Motility: a Systematic Review. Current Developments in Nutrition. 2023;7(10):101972-101972. doi:https://doi.org/10.1016/j.cdnut.2023.101972 ↩︎
9. Pitliuk R, Fucci TPP da CS. Cannabidiol in the Treatment of Irritable Bowel Syndrome. Journal of Coloproctology. 2021;41(04):455-456. doi:https://doi.org/10.1055/s-0041-1739168 ↩︎
10. Ricci C, Rizzello F, Valerii MC, et al. Geraniol Treatment for Irritable Bowel Syndrome: A Double-Blind Randomized Clinical Trial. Nutrients. 2022;14(19):4208. doi:https://doi.org/10.3390/nu14194208 ↩︎
11. Cox-Georgian D, Ramadoss N, Dona C, Basu C. Therapeutic and Medicinal Uses of Terpenes. Medicinal Plants. 2019;333-359. Published 2019 Nov 12. doi:10.1007/978-3-030-31269-5_15 ↩︎
12. Liktor-Busa E, Keresztes A, LaVigne J, Streicher JM, Largent-Milnes TM. Analgesic Potential of Terpenes Derived from Cannabis sativa. Pharmacological Reviews. 2021;73(4):98-126. doi:https://doi.org/10.1124/pharmrev.120.000046 ↩︎
13. Surendran S, Qassadi F, Surendran G, Lilley D, Heinrich M. Myrcene—What Are the Potential Health Benefits of This Flavouring and Aroma Agent? Frontiers in Nutrition. 2021;8. doi:https://doi.org/10.3389/fnut.2021.699666 ↩︎
14. Sommano SR, Chittasupho C, Ruksiriwanich W, Jantrawut P. The Cannabis Terpenes. Molecules. 2020;25(24):5792. Published 2020 Dec 8. doi:10.3390/molecules25245792 ↩︎

The information in this article and any included images or charts are for educational purposes only. This information is neither a substitute for, nor does it replace, professional legal advice or medical advice, diagnosis, or treatment. If you have any concerns or questions about laws, regulations, or your health, you should always consult with an attorney, physician or other licensed professional.