Learn about erythromycin eye ointment usage and dosing. Read the latest news and reviews about the drug as well as potential side effects and popular alternatives. Erythromycin Ophthalmic Ointment belongs to the macrolide group of antibiotics. It is basic and readily forms a salt when combined with an acid. The base, as crystals or powder, is slightly soluble in water, moderately soluble in ether, and readily soluble in alcohol or chloroform. After using erythromycin eye ointment, wipe the tip of the ointment tube with a clean tissue and keep the tube tightly closed. To help clear up your infection completely, keep using this medicine for the full time of treatment, even if your symptoms begin to clear up after a few days. Find patient medical information for Erythromycin ophthalmic (Ilotycin, Romycin) on WebMD including its uses, side effects and safety, interactions, pictures, warnings, and user ratings DESCRIPTION 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. Erythromycin Eye Ointment What is this medication? ERYTHROMYCIN (er ith roe MYE sin) prevents and treats eye infections caused by bacteria. It belongs to a group of medications called antibiotics. It will not treat infections caused by viruses. Ilotycin (Erythromycin) may treat, side effects, dosage, drug interactions, warnings, patient labeling, reviews, and related medications including drug comparison and health resources. Erythromycin ophthalmic ointment is commonly used as a harmless, cost-effective way to prevent blindness in newborns.3 During childbirth, bacteria from chlamydia and gonorrhea infections can enter a newborn's eyes. Erythromycin ophthalmic may cause serious side effects. Stop using erythromycin ophthalmic and call your doctor at once if you have: severe burning, stinging, or irritation after using erythromycin ophthalmic; or signs of eye infection --pain, swelling, severe discomfort, crusting or drainage, eyes more sensitive to light. Learn what erythromycin ophthalmic ointment treats, how it is used for bacterial eye infections and conjunctivitis, common side effects, and important safety information.