Penicillin V potassium — Penicillin antibacterial. Study the mechanism, listed uses and warnings from the US label on one sourced card.
Generic name
Penicillin V potassium
Class
Penicillin antibacterial
Mechanism
Bactericidal during active multiplication by inhibiting cell-wall mucopeptide synthesis; inactive against penicillinase producers.
Used for
Mild-to-moderate streptococcal upper-respiratory infections without bacteremia, scarlet fever and mild erysipelas; Selected mild-to-moderately severe infections due to penicillin-G-sensitive organisms; severe invasive infections are not treated with oral penicillin V in the acute stage
Common side effects
Nausea; Vomiting; Epigastric distress; Diarrhea; Black hairy tongue
Warnings
Hypersensitivity reactions, including potentially fatal anaphylaxis; A previous hypersensitivity reaction to any penicillin is a contraindication
Label date: 20260903 · 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.
Mechanism: Interferes with bacterial cell-wall formation, killing susceptible organisms while they are actively multiplying.
On both cards: Common side effects — Nausea; Vomiting; Diarrhea
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 — Rash · Warnings — Anaphylactic reactions; Severe cutaneous adverse reactions; C. difficile-associated diarrhea
Mechanism: Amoxicillin has bactericidal activity against susceptible bacteria. Clavulanate inactivates some beta-lactamases, protecting amoxicillin from those enzymes and extending its antibacterial spectrum.
On both cards: Common side effects — Nausea; Vomiting
Only on the Amoxicillin / Clavulanate card: Used for — Lower respiratory infections caused by the specified susceptible bacteria; Acute bacterial otitis media or sinusitis caused by the specified susceptible bacteria; Skin and skin-structure infections caused by the specified susceptible bacteria; Urinary tract infections caused by the specified susceptible bacteria; the combination is not indicated when testing shows amoxicillin susceptibility without beta-lactamase production · Common side effects — Diarrhea / loose stools; Skin rash, urticaria; Vaginitis · Warnings — Serious hypersensitivity reactions; Hepatic dysfunction, cholestatic jaundice; C. difficile-associated diarrhea
Mechanism: Binds to the bacterial 50S ribosomal subunit and interrupts protein synthesis.
On both cards: Common side effects — Nausea; Vomiting; Diarrhea
Only on the Azithromycin card: Used for — Community-acquired pneumonia caused by the specified susceptible bacteria in adults or children aged 6 months and older who are appropriate for oral treatment; Streptococcal pharyngitis or tonsillitis in adults or children aged 2 years and older who cannot use first-line therapy; Acute otitis media caused by the specified susceptible bacteria in children aged 6 months and older; Urethritis or cervicitis caused by the specified susceptible organisms in adults · Common side effects — Abdominal pain · Warnings — Serious allergic and skin reactions; Hepatotoxicity; QT prolongation / torsades de pointes
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.
Capsera