Does cannabis help with chronic pain?
Yes — evidence is strongest for neuropathic pain and multiple sclerosis. Effect is usually moderate: ~30 % pain reduction vs ~20 % placebo. In Switzerland, medical cannabis has been prescribable without FOPH authorisation since August 2022.
Key facts
- Best evidence: neuropathic & MS
- ~30 % pain reduction (vs 20 % placebo)
- CH: prescribable since 1.8.2022
- CBD+THC often > CBD alone
Detailed answer
The Cochrane review (Whiting et al., NASEM 2017) rates evidence for cannabis in chronic pain as moderate to strong, especially for neuropathic pain, MS spasticity, chemo-induced nausea. Typical effect: 30 % pain reduction, moderate clinical significance. THC-dominant preparations are prescribed (Sativex, flower, extracts). In Switzerland, prescribable by any doctor since 1.8.2022. Combined CBD + THC often more effective than CBD alone. Side effects: sedation, dizziness, dry mouth — titrate slowly.