Note on Q1 - "Classify antianginal drugs + Digoxin MOA": This appears on your sheet but under the "Antimicrobial Agents" heading, suggesting it may be a separate topic from a different section. Digoxin is a cardiac glycoside that works by inhibiting the Na+/K+ ATPase pump in cardiac muscle cells, increasing intracellular Ca2+ → positive inotropy. Antianginals include nitrates (GTN), beta-blockers, and calcium channel blockers. Let me know if you want that topic covered in full.