What volume tube is erythromycin ophthalmic ointment dispensed in?

Erythromycin Ophthalmic Ointment Dispensing Volume

Erythromycin ophthalmic ointment 0.5% is commercially dispensed in 3.5 gram (1/8 oz) tubes for multi-dose use, or in 1 gram single-use containers. 1

Available Package Sizes

The FDA-approved product is supplied in two configurations:

• 3.5 gram (1/8 oz) tamper-resistant tube – This is the standard multi-dose tube size (NDC 24208-910-55) 1
• 1 gram tin container – Available in cartons of 50 units (NDC 24208-910-19) 1

Clinical Context for Neonatal Prophylaxis

For neonatal ocular prophylaxis, single-use tubes or ampules are strongly preferred over multi-use containers to minimize contamination risk. 2

• The 1 gram single-use format is specifically designed for hospital use where multiple newborns require prophylaxis 1
• The 3.5 gram tube, while commercially available for outpatient prescriptions, presents contamination concerns when used for multiple neonates 3
• Some institutions have historically repackaged the 3.5 gram tubes into tuberculin syringes to create unit-dose preparations, though this practice requires appropriate compounding facilities 3

Storage Requirements

Both formulations must be stored between 15-25°C (59-77°F) and kept out of reach of children 1