Summary
126 patients with chronic exercise-induced angina, who were accustomed to the use of sublingual glyceryl trinitrate, were entered into a multicentre 2-week crossover comparison of sublingual (Nitromex) and buccal (Suscard®) formulations of glyceryl trinitrate. Before randomisation the patients underwent a training period when doses of the buccal formulation were individualised. There were 31% fewer attacks with the buccal formulation, and more patients reported higher physical activity on the buccal compared with the sublingual formulation (30% vs 16%). The buccal formulation was also more effective when glyceryl trinitrate was used prophylactically to prevent expected attacks, being effective in 74% of attempts compared with 66% for the sublingual formulation (p<0.05). More patients preferred the buccal route of administration for prophylactic use (81% vs 4%, p<0.05). Similarly, when asked to select which they would use in future, 65% of patients preferred the buccal formulation (p<0.05), 19% preferred sublingual glyceryl trinitrate, and 16% did not express any preference.
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Reference
Abrams J. Nitroglycerin and long-acting nitrates in clinical practice. American Journal of Medicine 74: 85–94, 1983
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Rydén, L. Buccal versus Sublingual Glyceryl Trinitrate Administration in the Treatment of Angina Pectoris. Drugs 33 (Suppl 4), 96–99 (1987). https://doi.org/10.2165/00003495-198700334-00017
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DOI: https://doi.org/10.2165/00003495-198700334-00017