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VETERINARY TEAM REFERENCE · MEDICATION

Erythromycin

A macrolide antibiotic. This entry covers sterile erythromycin ophthalmic ointment for susceptible superficial ocular infections; systemic products are separate formulations.

Macrolide antibacterialProduct-specific clinical reference

Updated October 16, 2026 · Sources and review status below

For veterinarians and veterinary staff. Product-label information is distinct from extra-label clinical practice. This is not a complete prescribing formulary or an automated interaction screen. Verify the current label, exact formulation, patient and species-specific clinical reference before use. Independent veterinary/pharmacy review remains pending.

Prescribing overview

This entry concerns sterile 0.5% ophthalmic ointment, not oral or dermatologic erythromycin. The reviewed label is human.

Key prescribing checks

  • The cited label contraindicates use in patients with erythromycin hypersensitivity.
  • Local irritation, redness and hypersensitivity may occur.
  • Treatment depends on susceptible organisms and the ocular diagnosis; persistent or worsening signs warrant reassessment rather than assuming every red eye is a bacterial infection.

Uses by species

Approval and evidence apply to the named product, species, route and indication. An extra-label use requires its own prescribing assessment; a human indication is not an animal approval.

Humans; animal indication not verified

Human prescription label

Susceptible superficial conjunctival/corneal infections

Veterinary ocular diagnosis and extra-label prescribing decision required.

Use / indication source ↗

Pharmacology & pharmacokinetics

Mechanism and clinical role

Inhibits bacterial protein synthesis.

Absorption, distribution, metabolism and elimination

The reviewed ophthalmic label provides no species-specific animal absorption or elimination data.

SAFETY REFERENCE · PRODUCT & SPECIES SPECIFIC

Contraindications & cautions

Contraindications identify circumstances where the source says a product should not be used. Precautions call for assessment or monitoring. Interactions identify combinations to review. They are distinct categories; this summary does not replace a full interaction check or the current product label.

Erythromycin

Reviewed human sterile ophthalmic ointment; human restrictions do not automatically establish veterinary contraindications.

Contraindications · when not to use

  • History of erythromycin hypersensitivity.

Precautions & monitoring

  • Nonsusceptible-organism/fungal overgrowth may require stopping and reassessing therapy. Avoid contaminating the applicator; local irritation/redness or hypersensitivity may occur. Pregnancy and nursing require professional assessment.

Safety sources checked: . Selected label information; independent veterinary or veterinary-pharmacy review remains pending. A label for dogs, cats, horses or humans does not establish safety for another species.

Adverse effects

Local irritation, redness and hypersensitivity are reported in human labeling.

These are selected source-reported effects, not incidence estimates or an exhaustive list. Spontaneous postmarketing reports do not by themselves establish frequency or causality.

Dosing & administration

Verify the source before prescribing. The regimens below summarize selected veterinary product labels, not every accepted veterinary use. They are not automatic substitutions between brands or formulations. Renal/hepatic disease, concurrent therapy, age, indication and clinical response can require a different plan.

A verified veterinary dose has not been entered for this product. Human-label dosing must not be used as an animal regimen. Consult a current species-specific clinical source and the prescribing veterinarian.

Veterinary dose not verified; human ointment-ribbon directions omitted.

Extra-label prescribing and food-animal residue requirements are separate from labeled regimens. FDA extra-label-use guidance ↗

Drug & supplement interactions

This is a selected interaction reference, not an automated or comprehensive combination checker. Reconcile prescription drugs, nonprescription products, supplements and recent treatment changes.

A product-specific interaction summary has not been established here. An empty list must not be interpreted as “no interactions.” Review the full source and a species-appropriate clinical reference.

Monitoring

Persistent or worsening ocular signs need reassessment; nonsusceptible organisms, including fungi, may overgrow.

Client counseling

Do not touch the applicator tip to the eye, fingers or another surface.

This section supports the veterinary team's discharge discussion; it does not replace the product’s Client Information Sheet where one is required.

Storage & handling

Reviewed ointment: 15–25°C; retain sterile applicator hygiene.

Brands, formulations & ingredient identity

Active ingredients

Erythromycin

Other searchable names: erythromycin ophthalmic

Ophthalmic ointment is a sterile eye preparation, not a generic description of every erythromycin product.

Oral, injectable and dermatologic formulations must be identified separately before dispensing or substitution.

No specific brand was written, so this entry does not invent one. Confirm the manufacturer and package when documenting the dispensed product.

Shared ingredients do not establish interchangeable concentrations, routes, release properties, species labeling or regional availability.

This entry is indexed by its generic ingredient name; verify the actual manufacturer and package.

References & review status

Clinical reference updated October 16, 2026. Independent veterinary or veterinary-pharmacy review not yet completed. Evidence gaps remain explicitly identified; this page does not claim equivalence to a comprehensive, professionally reviewed veterinary formulary.

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