Terbinafine: study card

Terbinafine — Allylamine antifungal. Study the mechanism, listed uses and warnings from the US label on one sourced card.

Generic name
Terbinafine
Class
Allylamine antifungal
Mechanism
Allylamine antifungal agent used orally against dermatophyte nail infection.
Used for
Dermatophyte onychomycosis of the toenails or fingernails, with the diagnosis confirmed by appropriate nail testing
Common side effects
Headache; Diarrhea; Rash; Dyspepsia; Liver enzyme abnormalities
Warnings
Hepatotoxicity / liver failure; Taste or smell disturbance, may be permanent; Severe skin reactions (SJS/TEN, DRESS)
Interactions
CYP2D6 substrates (e.g., desipramine); Cimetidine; Rifampin

Brand questions use only name pairings verified against the linked product source. Unverified pairings are withheld from these questions; the other study content remains available.

Read the source label ↗

Label date: 20260805 · For learning, not clinical decisions. US label and brand information; always consult the current source.

Source snapshot checked: 2026-10-21. The source document and selected fields were compared. The complete card has not had an independent clinical review.

Pronunciation

Terbinafine: ter-BIN-a-feen

Pronunciation is shown for the US English generic name.

Body system

Infectious disease · 21 Drug cards

Compare with related cards

Fluconazole

Same body system: Infectious disease

Mechanism: Selectively inhibits fungal CYP450 lanosterol 14-alpha-demethylase, blocking ergosterol synthesis (fungistatic).

On both cards: Common side effects — Headache; Diarrhea; Dyspepsia

Only on the Fluconazole card: Used for — Vaginal candidiasis; Oropharyngeal and esophageal candidiasis; Cryptococcal meningitis; Reduction of candidiasis in bone-marrow transplant patients receiving cytotoxic chemotherapy and/or radiation therapy · Common side effects — Nausea; Abdominal pain · Warnings — Hypersensitivity; caution with other azole allergy; Contraindicated with QT-prolonging CYP3A4 substrates; Rare serious liver injury, including fatal cases, and severe exfoliative skin reactions have been reported; Pregnancy exposure requires risk review: high-dose first-trimester exposure has been associated with a distinct birth-defect pattern; lower-dose observational signals have important limitations · Interactions — Erythromycin; Pimozide; Quinidine

Amoxicillin

Same body system: Infectious disease

Mechanism: Interferes with bacterial cell-wall formation, killing susceptible organisms while they are actively multiplying.

On both cards: Common side effects — Diarrhea; Rash

Only on the Amoxicillin card: Used for — Ear, nose and throat infections caused by the specified susceptible beta-lactamase-negative bacteria; Genitourinary infections caused by the specified susceptible beta-lactamase-negative bacteria; Skin and skin-structure infections caused by the specified susceptible beta-lactamase-negative bacteria; Lower respiratory infections caused by the specified susceptible beta-lactamase-negative bacteria · Common side effects — Vomiting; Nausea · Warnings — Anaphylactic reactions; Severe cutaneous adverse reactions; C. difficile-associated diarrhea · Interactions — Probenecid; Oral anticoagulants; Allopurinol

Cephalexin

Same body system: Infectious disease

Mechanism: Disrupts bacterial cell-wall synthesis, producing a bactericidal effect against susceptible organisms.

On both cards: Common side effects — Diarrhea; Dyspepsia

Only on the Cephalexin card: Used for — Respiratory infections caused by the specified susceptible bacteria; Otitis media caused by the specified susceptible bacteria; Skin and skin-structure infections caused by the specified susceptible bacteria; Bone or genitourinary infections caused by the specified susceptible bacteria · Common side effects — Nausea; Vomiting; Abdominal pain · Warnings — Serious hypersensitivity (anaphylactic) reactions; C. difficile-associated diarrhea; Seizure potential · Interactions — Metformin; Probenecid

An item counts as shared only when both cards use the same wording. If a card does not list an item, that is not a statement that the effect never occurs.