Nebivolol G.L. (Nebivolol Hydrochloride)

Nebivolol is a selective β1‑adrenergic antagonist used in the management of cardiovascular conditions.

• Hypertension: lowers systolic and diastolic blood pressure, reducing cardiovascular risk.
• Heart failure with reduced ejection fraction: improves left‑ventricular function and decreases mortality.
• Left ventricular dysfunction: supports cardiac output and mitigates progression of disease.

• Nebivolol selectively blocks β1‑adrenergic receptors in cardiac tissue, decreasing heart rate and myocardial contractility. Concurrently, it stimulates endothelial nitric‑oxide synthase, producing nitric oxide–mediated vasodilation that reduces peripheral vascular resistance, thereby lowering blood pressure without significant β2‑receptor antagonism.

Nebivolol may cause a range of adverse reactions, which are categorized by frequency.

Common Side Effects

• Headache: mild to moderate intensity.
• Dizziness: often related to blood pressure reduction.
• Fatigue: general feeling of tiredness.
• Nausea: occasional gastrointestinal upset.
• Bradycardia: slower than normal heart rate.
• Insomnia: difficulty initiating sleep.

Serious or Rare Side Effects

• Severe bradycardia: may require medical attention.
• Symptomatic hypotension: marked drop in blood pressure.
• Bronchospasm: especially in patients with asthma or COPD.
• Atrioventricular block: conduction disturbances.
• Allergic reactions: rash, angioedema, or anaphylaxis.
• Hepatic enzyme elevation: abnormal liver function tests.

Before initiating Nebivolol therapy, clinicians should consider several safety measures.

• Cardiovascular assessment: evaluate heart rate and blood pressure baseline.
• Asthma/COPD caution: monitor for bronchospasm in reactive airway disease.
• Diabetes monitoring: watch for masking of hypoglycaemic symptoms.
• Renal impairment: adjust dose if severe renal dysfunction is present.
• Discontinuation: avoid abrupt withdrawal to prevent rebound hypertension.
• Store at below 25°C: keep in the original pack, protect from moisture.

Nebivolol can interact with other medicines, requiring careful management.

Major Interactions (Avoid)

• Other beta‑blockers: additive bradycardia and hypotension.
• Calcium‑channel blockers (verapamil, diltiazem): increased risk of AV block.
• Clonidine abrupt cessation: may precipitate severe hypertension.

Moderate Interactions (Monitor Closely)

• NSAIDs: may attenuate antihypertensive effect.
• Diuretics: can enhance hypotensive response.
• Antidepressants (SSRIs, SNRIs): may affect heart rate control.
• Anti‑arrhythmic agents: potential for conduction abnormalities.