Transdermal Nitrate Therapy: Bioavailability During Exercise Increases Transiently After the Daily Change of Patch
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Ten volunteers carried a 10 mg 24 h -1 transdermal glyceryl trinitrate (GTN) patch for 24 h before moderate exercise. Plasma GTN-concentration increased significantly (P less than 0.05) by 19% to peak value at 15 min. Two hours after patch renewal repeat exercise increased GTN concentration by 56% (P less than 0.001). The two nitrate-concentration curves differed significantly (P less than 0.0001). Thus, change of patch augmented nitrate availability during exercise.
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