Nitrolingual Pumpspray (Glyceryl Trinitrate)

Nitrolingual Pumpspray (glyceryl trinitrate) is a nitrate vasodilator used in the management of coronary artery disease‑related chest pain.

• Acute angina pectoris: rapid relief of chest pain by dilating coronary vessels.
• Chronic stable angina (prophylaxis): reduction of angina attack frequency through pre‑emptive vasodilation.
• Exercise‑induced angina: prevention of chest pain during physical exertion by improving myocardial oxygen supply.

• Glyceryl trinitrate acts as a nitric oxide donor. After sublingual absorption, it is converted to nitric oxide, which activates guanylate cyclase in vascular smooth‑muscle cells, increasing cyclic GMP levels. Elevated cyclic GMP leads to smooth‑muscle relaxation, causing venous and arterial dilation, reduced preload and afterload, and enhanced coronary blood flow, thereby alleviating myocardial ischemia.

Common Side Effects

• Headache: mild to moderate throbbing pain, often transient.
• Flushing: warmth and redness of the face or neck.
• Dizziness or light‑headedness: due to blood pressure reduction.
• Nausea: occasional upset stomach.

Serious or Rare Side Effects

• Severe hypotension: marked drop in blood pressure requiring medical attention.
• Syncope: fainting episodes associated with sudden hypotension.
• Allergic reactions: rash, itching, or swelling that may indicate hypersensitivity.

Nitrolingual Pumpspray should be used with caution in patients with certain conditions and following specific handling guidelines.

• Severe hypotension: avoid use in patients with markedly low blood pressure.
• Concomitant PDE‑5 inhibitors: do not combine with sildenafil, tadalafil, or similar agents.
• Blood pressure monitoring: check systolic pressure before and after administration.
• Patient education: instruct on proper sublingual placement and avoidance of swallowing the spray.
• Store at ambient temperature: keep in the original container, protect from moisture and light.

Nitrolingual Pumpspray may interact with several medicines; some combinations should be avoided while others require monitoring.

Major Interactions (Avoid)

• Phosphodiesterase‑5 inhibitors (e.g., sildenafil, tadalafil): risk of severe hypotension.
• Other nitrates (e.g., isosorbide dinitrate, nitroglycerin): additive vasodilatory effect.
• Alcohol: potentiates blood‑pressure‑lowering action.

Moderate Interactions (Monitor Closely)

• Antihypertensives (ACE inhibitors, beta‑blockers): may enhance blood pressure reduction.
• Diuretics: increased risk of orthostatic hypotension.
• Azole antifungals (e.g., ketoconazole): may affect metabolic clearance.