PA School SurvivalDidactic Year

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PANCE Body Systems

Cardiovascular
11%
Pulmonary
9%
Gastrointestinal/Nutrition
8%
Musculoskeletal
8%
Neurology
7%
Infectious Disease
7%
Psychiatry/Behavioral
7%
Reproductive
7%
Endocrine
6%
Eyes/Ears/Nose/Throat
6%
Hematology
5%
Renal
5%
Genitourinary
4%
Dermatology
4%

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Home PharmacologyCephalexin

Cephalexin

Cephalosporin (1st-Generation)

Drug Class: Cephalosporin (1st-Generation)
Mechanism of Action (MOA): β-lactam: inhibits PBPs → impairs cell-wall synthesis.
Clinical Notes: Gram-positive (skin/soft tissue, MSSA, strep) plus some gram-negative (UTI). ~1–3% cross-reactivity with penicillin allergy.
Source: FDA label

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