There isn’t a lot of preaching happening either way in Cannabis Pharmacy. Instead, the book briefly overviews the historical use of medical cannabis before delving into how cannabis is absorbed and removed from the body, potential adverse effects and a look at the endocannabinoid system.
The science in the book isn’t exactly college-textbook level, but there are chemical diagrams of various molecules found in cannabis for those who might find that interesting. There’s also quite a bit of information about extracts and proper storage of cannabis, plus dosing and delivery.