Stability of Zidovudine and Ranitidine in 0.9% Sodium Chloride and 5% Dextrose Injections Stored at Ambient Temperature (23 +/- 2 deg C) and 4 Deg C in 50-mL Polyvinylchloride Bags Up to 24 Hours.

The stability of a 2-mg/mL zidovudine and 0.5-mg/mL ranitidine admixture stored in 0.9% sodium chloride and 5% dextrose injections in 50-mL polyvinylchloride bags at ambient temperature and 4 deg C up to 24 hours was studied. The samples were analyzed at 0, 4, 8 and 24 hours after preparation of the controls and admixtures by means of a reverse-phase, stability-indicating, high-performance liquid chromatographic method. The drug mixtures were stable for up to 24 hours, showing levels of greater than 90% of the initial drug concentrations at the time of preparation. The pH of the admixtures was in the pH 5-6 range. These data support the stability of the zidovudine and ranitidine admixture under the storage conditions studied.