Erythromycin Eye Ointment Expiration: Safety, Storage, and Usage Guidelines

Expiration Date

Yes, erythromycin ophthalmic ointment has an expiration date printed on the tube and box (typically 2–3 years from manufacture). Do not use past this date.

Why Expiration Matters

• Potency loss: Antibiotic degrades over time; subtherapeutic levels may not eradicate infection and can promote resistance.
• Sterility risk: Preservatives degrade; contaminated ointment can cause serious eye infections.
• Physical changes: Separation, grittiness, color change indicate instability.

Storage Recommendations

• Room temperature (15–25°C / 59–77°F); avoid heat, freezing, direct light.
• Keep tube tightly capped.
• Do not share; avoid touching tip to eye/lashes.
• Discard 30 days after opening (or per manufacturer's "beyond-use date").

Proper Use

1. Wash hands.
2. Pull down lower lid; apply 1 cm ribbon inside lower conjunctival sac.
3. Close eye gently; wipe excess.
4. Usually 2–4 times daily or as prescribed.

When to Replace

• Expired date reached.
• Opened >30 days (or per label).
• Contaminated (tip touched eye/surface).
• Appearance changed.
• Treatment course completed—discard remainder.

Never use expired or questionable eye medication. Eye infections can threaten vision. Obtain a new prescription if needed.