There is increasing interest in the Parkinson’s patient and research community about the potential for cannabis-based products to treat PD. In this webinar I review what cannabis is, how it works in the brain and why there is so much excitement about its potential in PD. We then review animal and basic science studies suggesting some promise in treating motor symptoms and slowing the progression of PD. We conclude by reviewing the evidence (or lack thereof) to date in human studies, suggestions for future research and practical advice for persons interested in trying cannabis-based products.