The Antibiotic Logic — What Textbooks Don’t Teach You
A practical antibiotic-selection guide for general practitioners and junior doctors — built for the OPD prescription pad, not just for textbook pharmacology.
Why This Guide Matters
Antibiotic prescribing becomes difficult when the question changes from “Which class of antibiotic?” to “Which antibiotic should I actually choose for this patient sitting in front of me?” This guide teaches antibiotic selection by clinical region, likely pathogens, OPD severity, drug safety, common brands, contraindications, and practical red flags.
The guide is especially useful for general practitioners and junior doctors because it converts scattered microbiology and pharmacology into bedside prescribing logic: skin infection, sinus/URT infection, LRTI, gut infection, UTI, typhoid, scrub typhus, leptospirosis, and key safety warnings.
What You’ll Learn
- Skin and soft tissue infection logic — why empiric therapy usually covers Gram-positive organisms first, and when to add Gram-negative or anaerobic cover.
- Uncomplicated skin infections — boils, abscess, impetigo, acne, cellulitis, cut wounds, folliculitis, sebaceous cysts, and burns.
- Complicated SSTI decision-making — severe cellulitis, diabetic foot, surgical wounds, infected burns, abscesses, and MRSA-risk situations.
- URT and sinus infection prescribing — acute sinusitis, bacterial pharyngitis, otitis media, tonsillitis, peritonsillar abscess, and the azithromycin trap.
- LRT infection frameworks — mild CAP, atypical CAP, AECOPD, severe CAP, dual therapy logic, and typical versus atypical pneumonia clues.
- Gut infection coverage — when to think Gram-negative plus anaerobic cover, including diarrhea, amoebiasis, giardiasis, H. pylori, diverticulitis, cholera, and traveler’s diarrhea.
- UTI prescribing — cystitis, urethritis, pyelonephritis, pregnancy safety, pediatric UTI, elderly presentations, and when not to use bladder-only drugs.
- Indian infectious disease pearls — typhoid, scrub typhus, leptospirosis, post-monsoon clues, intracellular organisms, and when doxycycline matters.
- Drug tables — adult doses, common Indian brand names, contraindications, and clinical cautions.
This guide is for clinical learning and prescribing reasoning. Final antibiotic selection must still consider local resistance patterns, pregnancy status, renal function, allergy history, severity of illness, culture reports, local protocols, and referral needs.