TheraRadar
Data updated: May 26, 2026

ERY-TAB (erythromycin)

Infectious Disease Approved 1982-03-29

ERY-TAB is a macrolide antibiotic used to manage a variety of bacterial infections, particularly those affecting the respiratory tract and skin. It helps patients with conditions such as whooping cough, diphtheria, and listeriosis, and it can also be used to prevent the spread of certain bacteria in infected individuals. This medication is typically prescribed when a bacterial cause is confirmed or strongly suspected to ensure the drug remains effective against resistant strains.

Source: FDA Label • CARNEGIE • Macrolide

How ERY-TAB Works

This medication works by binding to the 50S ribosomal subunits of susceptible bacteria, which inhibits their ability to synthesize proteins. By blocking this essential process without affecting nucleic acid synthesis, the drug effectively stops the growth and spread of the infection.

1
Indication
--
Phase 3 Trials
44
Years on Market

Details

Status
Prescription
First Approved
1982-03-29
Routes
ORAL
Dosage Forms
TABLET, DELAYED RELEASE

Companies

Active Ingredient: ERYTHROMYCIN

ERY-TAB Approval History

1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
Original
New Indication
New Form
Label Update
78 FDA actions from 1982 to 2019
Jun 2019 SUPPL
Label · Labeling
Dec 2013 SUPPL
Label · Labeling
Aug 2013 SUPPL
Label · Labeling

What ERY-TAB Treats

5 indications

ERY-TAB is approved for 5 conditions since its original approval in 1982. These indications span multiple therapeutic areas including oncology, immunology, and more.

  • Upper Respiratory Tract Infection
  • Lower Respiratory Tract Infection
  • Listeriosis
  • Respiratory Tract Infection
  • Skin Infection
Source: FDA Label

ERY-TAB Competitive Set

Pro

Three rings of competition based on shared molecular targets and treated indications.

Unlock 8 more competitors across all three rings.
Upgrade to Pro

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 ERY-TAB

3 of 20

FDA-approved drugs for similar conditions. Compare mechanisms and indications to understand treatment alternatives.

ACHROMYCIN V
TETRACYCLINE HYDROCHLORIDE
2 shared
LEDERLE
Shared indications:
Upper Respiratory Tract InfectionLower Respiratory Tract Infection
ERYTHROMYCIN LACTOBIONATE
ERYTHROMYCIN LACTOBIONATE
2 shared
NEXUS
Shared indications:
Upper Respiratory Tract InfectionLower Respiratory Tract Infection
FIRVANQ KIT
VANCOMYCIN HYDROCHLORIDE
2 shared
AZURITY
Shared indications:
📋

Clinical Trial Registry

25 trials
Trial Sponsor ID Phase Status Title
NCT07394725 130/IRV/SLMC/SWL Ph 1 completed Unlocking New Avenues: Azithromycin Vs Erythromycin in Pre-term, Pre-mature Rupture of Membrane Management
NCT06396078 2024H0122 Ph 4 recruiting Improvement of PPROM Management With Prophylactic Antimicrobial Therapy (iPROMPT)
NCT06948747 D7260C00017 Ph 1 completed A Study to Investigate the Effect of AZD5004 on Rosuvastatin, Atorvastatin, Simvastatin, Repaglinide and the Effect of Erythromycin on AZD5004 in Healthy Participants
NCT06273891 PRACET INOVA-2023-58 23-08-WC-0198 Ph 3 recruiting Erythromycin Versus Azithromycin for Preterm Prelabor Rupture of Membranes
NCT06917872 1397-0029 2024-515795-12-00, U1111-1310-2268 Ph 1 completed A Study in Healthy People to Test Whether Erythromycin Influences the Amount of BI 1291583 in the Blood
NCT01556334 PEACE PEACE Trial-1011004323 Ph 3 withdrawn Erythromycin Versus Azithromycin in Preterm Premature Rupture of Membranes
NCT03024879 MotilinAndFoodIntake Ph 4 enrolling by invitation The Effect of Motilin on the Frequency and Amount of Food Intake
NCT06395610 CLI-06001AA1-14 2023-507300-30-00 Ph 1 completed Effect of Erythromycin on the Absorption, Metabolism and Elimination of CHF6001 in Healthy Volunteers
NCT03060473 TREAT results posted 16-0323 Ph 3 terminated Treatment of ppROM With Erythromycin vs. Azithromycin Trial
NCT05995249 TAK-279-1002 Ph 1 completed A Study of the Interaction of TAK-279 With Substances That Have an Impact on Metabolism in Healthy Adults
NCT04714554 MVT-601-054 Ph 1 completed A Study of the Effects of Erythromycin on the Pharmacokinetics of Relugolix, Estradiol, and Norethindrone in Healthy Postmenopausal Women and on the Pharmacokinetics of Relugolix in Healthy Adult Men
NCT03480243 results posted UP0057 2017-004694-13 Ph 1 completed Study to Evaluate the Effect of Coadministered Erythromycin on the Pharmacokinetics and Safety of Padsevonil
NCT01342198 A0081197 Ph 1 completed An Investigation of the Effects of Erythromycin on the Pharmacokinetics of the Pregabalin Controlled Release Tablet
NCT02381080 CR106609 PCI-32765LYM1003, 2015-000325-36 Ph 1 completed Interaction Study of Ibrutinib and Cytochrome P450 (CYP) 3A Inhibitors in Participants With B-cell Malignancy
NCT02212821 Erythromycin_v6 Ph 4 completed Brain Mechanisms Underlying the Effect of the Motilin Receptor Agonist Erythromycin on Hunger in Normal Weight Subjects
NCT01668498 AIO-LQ-0110 2010-022938-85 Ph 2 completed Comparison of Two Preemptive Treatment Strategies of Panitumumab Mediated Skin Toxicity and Assessment of QoL in Patient With Ras-wt Colorectal Cancer
NCT01379183 results posted 10-004869 P01DK068055 Ph 2, Ph 3 completed Using Magnetic Resonance (MR) to Understand the Effect of Erythromycin on Bowel Motility
NCT00827216 NAC 06-225 Swissmedic 2008 DR 2321 Ph 2 completed The Effect of Intravenous Erythromycin on Gastric Emptying in Non-fasted Patients Before Emergency Total Anesthesia
NCT01323582 AZI results posted 645-2008 Ph 2 terminated Comparison of Two Macrolides, Azithromycin and Erythromycin, for Symptomatic Treatment of Gastroparesis
NCT01946256 ERC/2013/09/06 Ph 2 completed Treatment of Antenatal Chlamydia Infection
NCT01478256 results posted SAIRB-11-0007 Ph 4 completed Comparative Study in the Efficacy of Topical Besifloxocin With Erythromycin for the Management of Acute Blepharitis
NCT01659619 KC12MISI0164 Ph 2 completed Effect of Erythromycin Before Endoscopy of Patients With Subtotal Gastrectomy (STG), High Risk of Gastric Stasis
NCT01323257 CR018010 TMC435-TiDP16-C115 Ph 1 completed TMC435-TiDP16-C115 - A Study in Healthy Volunteers Investigating the Pharmacokinetic Interaction Between TMC435 and Erythromycin and Between TMC435 and Darunavir/Ritonavir (DRV/r)
NCT01338441 iQTEST 2010-022000-41 Ph 1 completed Selections of Subjects With Important Changes in Their Cardiac Repolarization Parameters for the Procurement of Skin and Blood Samples
NCT01117376 CT-88-01-36-1601 Ph 2 terminated Methylnaltrexone vs Erythromycin for Facilitating Gastric Emptying Time in Critically Ill Patients
🔬

Active Pipeline

Pro

Ongoing clinical trials by development phase

Loading...

Key Completed Trials

Pro

Completed studies with published results, ranked by significance

Loading...
📊

Trial Timeline

Full development history with FDA approval milestones

|
Loading...
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.

ERY-TAB FDA Label Details

Indications & Usage

FDA Label (PDF)

ERY-TAB is indicated for the treatment of Upper Respiratory Tract Infection; Lower Respiratory Tract Infection; Listeriosis; Respiratory Tract Infection; Skin Infection.

Track ERY-TAB with TheraRadar Pro

Watchlist alerts, full database access, CSV exports across 14,000+ drugs.

Upgrade to Pro

Data Sources

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