Nicorandil Strandhaven (Nicorandil)

Nicorandil is used in the management of coronary artery disease‑related angina.

• Chronic stable angina pectoris: reduces frequency and severity of chest pain episodes, improving exercise tolerance.
• Prevention of angina attacks: helps maintain stable cardiac workload and prevents sudden angina episodes.
• Ischemic heart disease: improves myocardial oxygen balance by decreasing preload and afterload.

• Nicorandil donates nitric oxide, which activates guanylate cyclase and raises cyclic GMP, leading to vascular smooth‑muscle relaxation. Simultaneously it opens ATP‑sensitive potassium channels in arterial and venous walls, causing hyperpolarisation and further vasodilation. The combined arterial and venous dilation reduces cardiac preload and afterload, lowering myocardial oxygen consumption and relieving angina.

Nicorandil may cause a range of adverse reactions, from mild to severe.

Common Side Effects

• Headache: mild to moderate throbbing pain, often transient.
• Flushing: sensation of warmth and redness, especially on the face.
• Dizziness or light‑headedness: related to blood pressure changes.
• Nausea or dyspepsia: gastrointestinal discomfort.
• Palpitations: awareness of heartbeat irregularities.
• Hypotension: mild drop in blood pressure causing fatigue.

Serious or Rare Side Effects

• Severe hypotension: marked blood pressure fall requiring medical attention.
• Bronchospasm: difficulty breathing, particularly in patients with asthma.
• Stevens‑Johnson syndrome or toxic epidermal necrolysis: severe skin reactions.
• Hepatic dysfunction: elevated liver enzymes or hepatitis.
• Anaphylactic reaction: sudden severe allergic response.
• Myocardial infarction: rare occurrence despite anti‑anginal intent.

When prescribing Nicorandil, clinicians should consider several safety precautions.

• Cardiovascular status: monitor blood pressure and heart rate regularly.
• Concomitant nitrates: avoid co‑administration to prevent additive hypotension.
• Renal impairment: assess kidney function and adjust therapy if needed.
• Pregnancy and lactation: use only if potential benefit justifies potential risk.
• Elderly patients: start at low dose and titrate cautiously.
• Store at ambient temperature: keep in original container, protect from moisture and direct sunlight.

Nicorandil can interact with other medicines, influencing its safety and efficacy.

Major Interactions (Avoid)

• Other nitrates (e.g., isosorbide dinitrate): additive vasodilation may cause severe hypotension.
• Phosphodiesterase‑5 inhibitors (e.g., sildenafil): risk of profound blood pressure reduction.
• Antihypertensive agents (e.g., ACE inhibitors, ARBs): may enhance blood‑pressure‑lowering effect.

Moderate Interactions (Monitor Closely)

• Diuretics: can increase risk of orthostatic hypotension.
• Beta‑blockers: may mask tachycardia signs of hypotension.
• Calcium channel blockers: additive vasodilatory effect may require dose adjustment.
• Alcohol: may potentiate dizziness and hypotension.