Nitroglycerin lingual spray: clinical efficacy and dose-response relation.

Area of Science:

• Cardiology
• Pharmacology

Background:

• Exercise-induced angina pectoris is a common condition.
• Nitroglycerin is a standard treatment for angina.

Purpose of the Study:

• To evaluate the efficacy and dose-response of nitroglycerin (GTN) lingual spray.
• To compare GTN lingual spray with placebo and sublingual GTN.

Main Methods:

• Twenty patients with stable, exercise-induced angina were given varying doses of GTN lingual spray (0.2, 0.4, 0.8 mg).
• Hemodynamic effects and exercise tolerance were measured.
• Comparisons were made with placebo and 0.4 mg sublingual GTN.

Main Results:

• GTN lingual spray demonstrated a dose-response relationship for heart rate.
• Exercise duration until angina onset and moderate angina was prolonged by GTN spray in a dose-dependent manner.
• GTN lingual spray (0.4 and 0.8 mg) showed effects comparable to 0.4 mg sublingual GTN.

Conclusions:

• Nitroglycerin lingual spray is effective for angina prophylaxis and treatment.
• Doses of 0.4 or 0.8 mg of GTN lingual spray appear most effective.
• GTN lingual spray offers a viable alternative to sublingual nitroglycerin for angina management.