ROBERT H. HODGE, M.D.; JOHN T. BOWERS, M.D.; STEPHEN L. POHL, M.D.
HODGE RH, BOWERS JT, POHL SL. How Long Does a Tube of Nitroglycerin Ointment Last?. Ann Intern Med. 1980;93:373. doi: 10.7326/0003-4819-93-2-373_2
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Published: Ann Intern Med. 1980;93(2):373.
To the editor: Many patients in our general medical clinic taking nitroglycerin ointment have returned between their regularly scheduled appointments for refills. As this need may affect medication-taking compliance (1), we wonder whether clinicians know how many doses are available in a standard 60-g tube of 2% nitroglycerin ointment?
Ten samples of each of 1 inch (2.5 cm), 1½ inches (3.8 cm), and 2 inches (5.1 cm) of 2% nitroglycerin ointment (Nitrol Ointment; Kremers-Urban Company, Milwaukee, Wisconsin) were measured on the Applirulers (Kremers-Urban Company) supplied with the tube. Each Appliruler was weighed so that the net weight could be calculated.
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