This document provides study material and assignments on Drug Pharmacology. It covers topics such as the pathophysiology, symptoms, and treatment options for tension headaches and migraines, the mechanism of action and recommended dosages for medications like Paracetamol and Codeine, safety considerations and potential side effects of NSAIDs, natural remedies and physical medicine techniques for managing headaches, pharmacodynamics and interactions of medications like Tramadol, Valium, and Efexor, use of these medications during pregnancy, and the therapeutic uses, mechanism of action, side effects, and drug interactions of Prednisolone.