Medical cannabis may offer modest, short-term pain relief for some people, especially those with nerve-related pain. It can also cause dizziness, sleepiness, and other side effects. Whether it is worth trying depends on your symptoms, medical history, and treatment goals.
At Dodson Pain Consultants, we believe patients deserve a clear account of both the possible benefits and the limits of the evidence.
Can medical cannabis help with chronic pain?
A 2025 systematic review published in Annals of Internal Medicine examined 25 clinical trials involving 2,303 people. Products with comparable amounts of THC and CBD, or with higher amounts of THC, were associated with small improvements in pain during short-term treatment. Most participants studied had nerve-related pain. Dizziness, sedation, and nausea were more common with some of these products. The review found that products low in THC may not improve pain outcomes.
A 2026 Cochrane review focused specifically on chronic neuropathic pain took a more cautious view. It found that the available studies do not establish a clear, reliable benefit for the outcomes patients may care about most, such as substantial pain relief. Many studies were small or short. Taken together, the reviews suggest that some patients may experience modest relief, but a meaningful benefit is far from certain.
If you are considering medical cannabis for pain, it helps to set a practical goal. Could you walk farther, sleep with fewer interruptions from pain, or complete an activity that has become difficult? Tracking those changes alongside side effects makes it easier to decide whether a trial is helping you.
What other symptoms might cannabis-related medicines help?
Cannabinoids have been studied for muscle stiffness and spasms associated with multiple sclerosis, although the results depend on the product and the outcome measured. Some FDA-approved prescription cannabinoid medicines have specific uses for certain seizure disorders, chemotherapy-related nausea, or appetite loss associated with AIDS. These prescription drugs are different from products available through state medical cannabis programs. Evidence for one medicine should not be assumed to apply to every cannabis product.
Some people also report sleeping better when their pain is better controlled. That does not mean cannabis is a proven treatment for every sleep disorder.
What are the risks of medical cannabis?
Possible side effects include dizziness, sleepiness, nausea, and impaired attention or coordination. Cannabis can affect driving ability, may be unsuitable during pregnancy or breastfeeding, and deserves particular caution for people with certain mental health or heart conditions. Discuss all medications and supplements with your healthcare professional before use. Never drive while impaired.
The balance of benefit and risk can vary substantially between products. The concentration of THC and CBD, the way a product is taken, and the individual patient all matter. Long-term benefits and harms remain less certain than short-term effects.
Is medical cannabis FDA-approved?
Cannabis itself is not FDA-approved to treat any disease or condition. The FDA has approved a small number of specific cannabis-derived or synthetic cannabinoid prescription drugs for defined uses. State certification for medical cannabis is a separate process and does not mean that every product in a dispensary has FDA approval.
Who may qualify in Minnesota or Iowa?
Both Minnesota and Iowa list chronic pain among their medical cannabis qualifying conditions. Each state has its own eligibility and registration requirements. A qualified healthcare practitioner can review your diagnosis and discuss whether certification and a monitored trial are appropriate for you.
The takeaway
Medical cannabis is an option some patients may wish to discuss as part of a broader pain care plan. Current research supports the possibility of small, short-term pain improvements with certain products, while also showing side effects and important gaps in long-term evidence. The best decision starts with your specific symptoms, your other treatment options, and a clear way to measure whether your quality of life improves.
Dodson Pain Consultants provides medical cannabis certification evaluations for eligible patients in Minnesota and Iowa. Contact our office to discuss your condition and the next steps.
References
- Chou R, et al. “Cannabis-Based Products for Chronic Pain: An Updated Systematic Review.” Annals of Internal Medicine, 2025.
- Ateş G, et al. “Cannabis-based medicines for chronic neuropathic pain in adults.” Cochrane Database of Systematic Reviews, 2026.
- U.S. Food and Drug Administration. “FDA and Cannabis: Research and Drug Approval Process.”
- Minnesota Office of Cannabis Management. “Qualifying Medical Conditions.”
- Iowa Department of Health and Human Services. “Medical Cannabis for Patients & Caregivers.”