Cannabis for Chronic Back Pain

This trial examines how cannabis may help individuals with chronic back pain. Researchers aim to determine if cannabis can reduce the need for prescription opioids by acting as a pain reliever or by helping individuals lower their opioid doses. Participants will receive various combinations of THC (Tetrahydrocannabinol) and CBD, compounds found in cannabis, along with placebos. The trial may suit those who have experienced back pain for over three months and wish to reduce opioid use, provided they have not undergone major surgery recently or have other severe pain conditions. As a Phase 3 trial, this study represents the final step before FDA approval, offering participants a chance to contribute to potential new treatment options.

The trial requires participants to stop using cannabis 14 days before the study and throughout the study. If you are currently using opioids, you must stop 14 days before the study and during the study if you are in the Analgesia Arm. Other medications like valproate, clobazam, clopidogrel, warfarin, barbiturates, and benzodiazepines are also not allowed.

Research has shown that both THC and a combination of THC and CBD have been studied for safety in treating long-term pain. Studies suggest that side effects from THC are fairly common, occurring in about 26% of users, but these effects are usually mild and not serious. While some users may experience side effects, they are generally not severe.

For the THC/CBD combination, research indicates it is generally well-tolerated, especially compared to opioid painkillers. This combination has a good safety record, typically not causing serious side effects, with a low risk of addiction or misuse.

Researchers are excited about using THC and THC/CBD for chronic back pain because these compounds offer a potential alternative to traditional painkillers like opioids and NSAIDs, which can have significant side effects and addiction risks. THC and CBD, derived from cannabis, work by interacting with the body's endocannabinoid system, possibly providing pain relief with a different mechanism of action than standard treatments. This approach could lead to effective pain management with fewer side effects, making it a promising option for those who have not found relief with current medications.

Research has shown that treatments using THC and a mix of THC/CBD can help reduce chronic back pain. In this trial, participants will receive different treatment sequences, including THC alone, a THC/CBD combination, and a placebo. One study found that people using THC reported significantly less pain compared to those who received a placebo. Another study found that a combination of THC and CBD reduced pain by 42% to 66%. These findings suggest that cannabis-based treatments can effectively manage chronic pain. Additionally, using both THC and CBD together may better reduce pain and the desire for opioids than using THC alone. Overall, these treatments appear promising for individuals with chronic back pain.¹³⁶⁷⁸