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Abstract
A stability-indicating high-performance liquid chromatography method for the quantitation of nizatidine in capsules has been developed. The method is accurate and precise with a percent relative standard deviation of 0.34 based on 6 readings. A number of inactive ingredients present in the capsules did not interfere in the assay procedure. The recovery from the synthetic mixtures was quantitative. The extraction procedure from the capsules is very simple. The drug appears to be very sensitive to bases (such as sodium hydroxide) since 100% of the drug decomposed on boiling for 35 minutes. The drug was very stable when boiled with sulfuric acid.