SPL Set ID: 3d80f96e-3bbe-4fa5-89a8-694c61dd5e8f

Erythromycin is produced by a strain of Saccharopolyspora erythraea (formerly Streptomyces erythraeus ) and belongs to the macrolide group of antibiotics. It is basic and readily forms salts with acids. The base, the stearate salt, and the esters are poorly soluble in water. Erythromycin ethylsuccinate is an ester of erythromycin suitable for oral administration. Erythromycin ethylsuccinate is known chemically as erythromycin 2'-(ethylsuccinate). The molecular formula is C 43 H 75 NO 16 and the molecular weight is 862.06. The structural formula is: Erythromycin Ethylsuccinate for Oral Suspension USP, 200 mg/5 mL when reconstituted with water, forms a suspension containing erythromycin ethylsuccinate equivalent to 200 mg erythromycin per 5 mL (teaspoonful) or 100 mg per 2.5 mL (dropperful) with an appealing cherry flavor. Erythromycin Ethylsuccinate for Oral Suspension USP, 400 mg/5 mL when reconstituted with water, forms a suspension containing erythromycin ethylsuccinate equivalent to 400 mg of erythromycin per 5 mL (teaspoonful) with an appealing cherry flavor. These products are intended primarily for pediatric use but can also be used in adults. Inactive Ingredients Erythromycin Ethylsuccinate for Oral Suspension USP, 200 mg/5 mL and 400 mg/5 mL contain the following inactive ingredients: lactose anhydrous, methylparaben, sodium citrate anhydrous, povidone, simethicone, cherry flavor, polysorbate 80, and sucrose. structure