Abstract
AbstractInvestigation of the dissolution rate profiles of nalidixic acid tablets of three commercial brands was carried out. Using the U.S.P. paddle method, significant inter-brand variations in dissolution rates were found and the tablets did not pass the U.S.P. dissolution test. The dissolution of the tablets was also found to be adversely affected on aging. The observed differences in dissolution rates of the tablets examined were unrelated to their disintegration times. An attempt was made to improve the dissolution rate of nalidixic acid tablets through hydrophilization of nalidixic acid powder and use of tablet excipients with high aqueous solubility were found to yield tablets of good physical qualities which were unaffected on aging.
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