This video provides an overview of medical marijuana, its compounds and legality. It sheds light on the usage of cannabis in chronic pain and the literature regarding it. Furthermore, it looks at an alternative treatment, opioids, and compares the pros and cons of each. This video was made by McMaster Demystifying Medicine students: Victor Nguyen, Ghazaleh Jafarazadeh-Maleki, Vaithiegaa Mathanarajan and Karan Taghizadeh. Copyright McMaster University 2020