Serum Levels After Repository Injections of Penicillin

Abstract

When tested in the same subject the serum concns. obtained after a single injn. of penicillin in a water-in-oil emulsion were not superior to those obtained with the same dose given in the same vol. of saline, and the levels were not better sustained. A dose of 300,000 units in 1 ml. of 4.8% beeswax in peanut oil gave lower maximum concns., but the serum levels were better sustained over a 12-hr. period.