TheraRadar
Data updated: May 26, 2026

PFIZERPEN (penicillin g potassium)

Infectious Disease Approved 1968-08-30

PFIZERPEN is indicated for the treatment of Septicemia; Empyema; Pneumonia; Pericarditis; Endocarditis; Meningitis; Anthrax; Actinomycosis; Botulism; Gas Gangrene.

Source: FDA Label • Pfizer
1
Indication
--
Phase 3 Trials
57
Years on Market

Details

Status
Prescription
First Approved
1968-08-30
Routes
INJECTION
Dosage Forms
INJECTABLE

Companies

Active Ingredient: PENICILLIN G POTASSIUM

PFIZERPEN Approval History

1969
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Original
New Indication
New Form
Label Update
36 FDA actions from 1968 to 2024
Jun 2024 SUPPL
Label · Labeling
Apr 2018 SUPPL
Label · Labeling
Jul 2016 SUPPL
Label · Labeling

What PFIZERPEN Treats

10 indications

PFIZERPEN is approved for 10 conditions since its original approval in 1968. These indications span multiple therapeutic areas including oncology, immunology, and more.

  • Septicemia
  • Empyema
  • Pneumonia
  • Pericarditis
  • Endocarditis
  • Meningitis
  • Anthrax
  • Actinomycosis
Source: FDA Label

PFIZERPEN Competitive Set

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Filters applied: drops same-active-ingredient (505(b)(2) reformulations), route-mismatch (topical vs systemic), and cross-therapeutic-area matches in same-indication rings.

Drugs Similar to PFIZERPEN

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PENICILLIN G POTASSIUM IN PLASTIC CONTAINER
PENICILLIN G POTASSIUM
10 shared
Baxter
Shared indications:
SepticemiaEmpyemaPneumonia +7 more
ANCOBON
FLUCYTOSINE
3 shared
BAUSCH
Shared indications:
SepticemiaEndocarditisMeningitis
CEFUROXIME
CEFUROXIME
3 shared
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Active Pipeline

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Ongoing clinical trials by development phase

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Key Completed Trials

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Completed studies with published results, ranked by significance

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Trial Timeline

Full development history with FDA approval milestones

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Understanding FDA Approval Types
Count Type What it means
- ORIG Original approval - drug first enters market
- SUPPL - Efficacy New indication (new disease/condition approved)
- SUPPL - Labeling Label text changes (warnings, dosing updates)
- SUPPL - Manufacturing Production changes (new facility)
- SUPPL - Chemistry Formulation changes (new dosage strength)

Green lines in the timeline show ORIG and Efficacy approvals - the clinically meaningful milestones.

PFIZERPEN FDA Label Details

Indications & Usage

PFIZERPEN is indicated for the treatment of Septicemia; Empyema; Pneumonia; Pericarditis; Endocarditis; Meningitis; Anthrax; Actinomycosis; Botulism; Gas Gangrene.

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Data Sources

Data sourced from official FDA and NIH databases. Click links to verify on original sources.