ERYTHROMYCIN ointment | ERYTHROMYCIN [Stat Rx USA] | BioPortfolio

12:10 EST 27th January 2019 | BioPortfolio

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Erythromycin Ophthalmic Ointment USP belongs to the macrolide group of antibiotics. The sterile ophthalmic ointment flows freely over the conjunctiva. Erythromycin base, as crystals or powder, is slightly soluble in water, moderately soluble in ether, and readily soluble in alcohol or chloroform. Erythromycin is an antibiotic produced from a strain of Streptomyces erythraeus. It is basic and readily forms a salt when combined with an acid. It has the following structural formula:



Mol. Wt. 733.94

Chemical Name: (3R•, 4S•, 5S•, 6R•, 7R•, 9R•, 11R•, 12R•, 13S•, 14R•)-4-[(2,6-Dideoxy-3-C-methyl-3-0-methyl-α-L-ribo-hexopyranosyl)oxy]-14-ethyl-7, 12, 13-trihydroxy-3, 5, 7, 9, 11, 13 hexamethyl-6-[[3,4,6-trideoxy-3-(dimethylamino)-β-D-xylo-opyranosyl]oxy]oxacyclotetradecane-2, 10-dione

Each Gram Contains: ACTIVE: Erythromycin, USP 5 mg (0.5%); INACTIVES: White Petrolatum, Mineral Oil.                                                             

Erythromycin inhibits protein synthesis without affecting nucleic acid synthesis. Erythromycin is usually active against the following organisms in vitro and in clinical infections: Streptococcus pyogenes (group A β-hemolytic), Alpha-hemolytic streptococci (viridans group); Staphylococcus aureus, including penicillinase-producing strains (methicillin-resistant staphylococci are uniformly resistant to erythromycin); Streptococcus pneumoniae; Mycoplasma pneumoniae (Eaton Agent, PPLO); Haemophilus influenzae (not all strains of this organism are susceptible at the erythromycin concentrations ordinarily achieved); Treponema pallidum; Corynebacterium diphtheriae; Neisseria gonorrhoeae; Chlamydia trachomatis.

For prophylaxis of ophthalmia neonatorum due to N. gonorrhoeae or C. trachomatis.

The effectiveness of erythromycin in the prevention of ophthalmia caused by penicillinase-producing N. gonorrhoeae is not established.

For infants born to mothers with clinically apparent gonorrhea, intravenous or intramuscular injections of aqueous crystalline penicillin G should be given; a single dose of 50,000 units for term infants or 20,000 units for infants of low birth weight. Topical prophylaxis alone is inadequate for these infants.

The use of antimicrobial agents may be associated with the overgrowth of non-susceptible organisms including fungi; in such a case, antibiotic administration should be stopped and appropriate measures taken.

Avoid contaminating the tip of container with material from the eye, fingers or other source.

Two year oral studies conducted in rats with erythromycin did not provide evidence of tumorigenicity. Mutagenicity studies have not been conducted. No evidence of impaired fertility or harm to the fetus that appeared related to erythromycin was reported in these studies.

Pregnancy Category B.

Reproduction studies have been performed in rats, mice, and rabbits using erythromycin and its various salts and esters, at doses that were several multiples of the usual human dose. There are, however, no adequate and well-controlled studies in pregnant women. Because animal reproductive studies are not always predictive of human response, the erythromycins should be used during pregnancy only if clearly needed.

Caution should be exercised when erythromycin is administered to a nursing woman.


For prophylaxis of neonatal gonococcal or chlamydial ophthalmia, a ribbon of ointment approximately 1 cm in length should be instilled into each lower conjunctival sac. The ointment should not be flushed from the eye following instillation. A new tube should be used for each infant.

1/8 oz. (3.5 g) tamper-resistant tube – 09234


1 g tin container (in cartons of 50)


Store between 15°-30°C (59°-86°F).


Revised February 2007

Rx only


Stat Rx USA

Active Ingredients


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Erythromycin [rpk pharmaceuticals, inc.]

Erythromycin Ophthalmic Ointment, USP 0.5% (Sterile)

Erythromycin [a-s medication solutions]


Erythromycin [a-s medication solutions]

Erythromycin Ophthalmic Ointment, USP 0.5% (Sterile)

Erythromycin [proficient rx lp]

Erythromycin Ophthalmic Ointment USP, 0.5% (Sterile)

Erythromycin [rebel distributors corp]

Erythromycin Ophthalmic Ointment USP, 0.5% (Sterile)

Clinical Trials [40 Associated Clinical Trials listed on BioPortfolio]

Effect of the Motilin Receptor Agonist, Erythromycin, on Hunger and Food Intake; Study of Role of Cholinergic Pathways

In this study, the investigators will evaluate if the food intake associated with the infusion of erythromycin is caused by the phase 3 contractions or by another yet unknown effect of ery...

Intravenous Erythromycin Before Endoscopy in Patients With Variceal Bleeding: A Randomized, Double-Blind Trial

Objectives: Blood in stomach & oesophagus in patients with variceal bleeding often obscures the endoscopic view & makes endoscopic intervention difficult to perform. Erythromycin, a ...

Study to Evaluate the Effect of Coadministered Erythromycin on the Pharmacokinetics and Safety of Padsevonil

The purpose of this study is to evaluate and compare the Pharmacokinetics (PK) of concomitant administration of Padsevonil (PSL) in the presence and absence of erythromycin in healthy stud...

Use of Erythromycin in Mustard-Induced Bronchiolitis

We looked for the effectiveness of low-dose long-term prescription of erythromycin in mustard-induced bronchiolitis obliterans

The Effect of Erythromycin on Occurrence of Leaks From Cervical Esophageal-Gastric Anastomosis After Trans-Hiatal Esophagectomy

Cervical anastomotic leak is one of the most common complications after trans-hiatal esophagectomy. Hypothesis: An early post operative administration of a pro-kinetic dosage of erythromy...

PubMed Articles [74 Associated PubMed Articles listed on BioPortfolio]

Erythromycin relaxes BALB/c mouse airway smooth muscle.

Bitter taste receptor (TAS2R) agonists have bronchodilatory potentials. Erythromycin is a ligand of TAS2R10, but its relaxant profile is unknown. This study was performed to understand the relaxant ef...

Precursor supply for erythromycin biosynthesis: engineering of propionate assimilation pathway based on propionylation modification.

Erythromycin is necessary in the medical treatment and known to be biosynthesized with propionyl-CoA as direct precursor. Over-supply of propionyl-CoA induced hyper propionylation, which was demonstra...

Erythromycin sensitivity across different taxa of marine phytoplankton. A novel approach to sensitivity of microalgae and the evolutionary history of the 23S gene.

Erythromycin has been recorded in coastal waters and could pose a severe threat to marine microbial life. Macrolides such as erythromycin may affect microalgae by inhibiting the pathways involved in p...

Association between exposure to macrolides and the development of infantile hypertrophic pyloric stenosis: a systematic review and meta-analysis.

Macrolides are bacteriostatic antibiotics with a broad spectrum of activity against Gram-positive bacteria. The aim of this study was to systematically review and meta-analyze the association between ...

Lack of Evidence for erm(B) Infiltration Into Erythromycin-Resistant Campylobacter coli and Campylobacter jejuni from Commercial Turkey Production in Eastern North Carolina: A Major Turkey-Growing Region in the United States.

In Campylobacter spp., resistance to erythromycin and other macrolides has typically implicated ribosomal mutations, especially substitutions in the 23S rRNA genes. However, in 2014, the macrolide res...

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