Comparison of the Blood Levels obtained after Single and Multiple Doses of Erythromycin Estolate and Erythromycin Stearate.

Summary1. Blood levels were determined in a group of 12 healthy volunteers after single and multiple doses in a four-way cross-over experiment with erythromycin estolate and erythromycin stearate.2. Erythromycin estolate, when administered fasting, is better absorbed than erythromycin stearate.3. Fo