Book excerpt: The most comprehensive and approachable book available on understanding and using medical marijuana. Revised and updated with the latest information on varietals, delivery, dosing, and treatable conditions, Cannabis Pharmacy is "a well-designed and -illustrated and easy-to-use resource"(Booklist) for those considering medical marijuana as a treatment option. In Cannabis Pharmacy, expert Michael Backes offers evidence-based information on using cannabis to treat an array of ailments and conditions. He provides information on how cannabis works with the body's own system, how best to prepare and administer it, and how to modify and control dosage. This newly revised edition is now completely up-to-date with the latest information on the body's endocannabinoid system, which is understood to control emotion, appetite, and memory. Delivery methods including e-cigarette and vape designs are also covered here, along with information on additional varietals and a new system for classification. Cannabis Pharmacy covers more than 50 ailments and conditions, including anxiety, ADHD, Depression, Gastrointestinal disorders, Insomnia, Menopause, Migraine, Pain, PTSD, and more, that can be alleviated with marijuana.