Medically reviewed by Drugs.com. Last updated on Dec 21, 2022.
Erythromycin ethylsuccinate suspensions and film-coated tablets may be administered without regard to meals.
Age, weight, and severity of the infection are important factors in determining the proper dosage. In mild to moderate infections, the usual dosage of erythromycin ethylsuccinate for children is 30 to 50 mg/kg/day in equally divided doses every 6 hours. For more severe infections, this dosage may be doubled. If twice-a-day dosage is desired, one-half of the total daily dose may be given every 12 hours. Doses may also be given three times daily by administering one-third of the total daily dose every 8 hours.
The following dosage schedule is suggested for mild to moderate infections:
|Body Weight||Total Daily Dose|
|Under 10 lbs||30 to 50 mg/kg/day
15 to 25 mg/lb/day
|10 to 15 lbs||200 mg|
|16 to 25 lbs||400 mg|
|26 to 50 lbs||800 mg|
|51 to 100 lbs||1200 mg|
|over 100 lbs||1600 mg|
400 mg erythromycin ethylsuccinate every 6 hours is the usual dose. Dosage may be increased up to 4 g per day according to the severity of the infection. If twice-a-day dosage is desired, one-half of the total daily dose may be given every 12 hours. Doses may also be given three times daily by administering one-third of the total daily dose every 8 hours.
For adult dosage calculation, use a ratio of 400 mg of erythromycin activity as the ethylsuccinate to 250 mg of erythromycin activity as the stearate, base or estolate.
In the treatment of streptococcal infections, a therapeutic dosage of erythromycin ethylsuccinate should be administered for at least 10 days. In continuous prophylaxis against recurrences of streptococcal infections in persons with a history of rheumatic heart disease, the usual dosage is 400 mg twice a day.
For Treatment of Urethritis Due to C. trachomatis or U. urealyticum
800 mg three times a day for 7 days.
For Treatment of Primary Syphilis
For Intestinal Amebiasis
For Use in Pertussis
Although optimal dosage and duration have not been established, doses of erythromycin utilized in reported clinical studies were 40 to 50 mg/kg/day, given in divided doses for 5 to 14 days.
For Treatment of Legionnaires' Disease
Although optimal doses have not been established, doses utilized in reported clinical data were those recommended above (1.6 to 4 g daily in divided doses).
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