Nebivolol Krka (Nebivolol)

Nebivolol is a selective β1‑adrenergic blocker used in the management of hypertension and related blood‑pressure disorders.

• Essential hypertension: lowers systolic and diastolic pressure to achieve target blood‑pressure goals.
• Isolated systolic hypertension: reduces elevated systolic readings, especially in older adults.
• High blood pressure in elderly patients: provides effective control with a favorable heart‑rate profile.

• Nebivolol selectively antagonizes β1‑adrenergic receptors in cardiac tissue, decreasing heart‑rate and myocardial contractility, which reduces cardiac output. In addition, it stimulates endothelial nitric oxide synthase, leading to nitric oxide‑mediated vasodilation of peripheral vessels. The combined β1‑blockade and nitric‑oxide effect produce a net reduction in systemic vascular resistance and arterial pressure, contributing to its antihypertensive action.

Nebivolol may cause a range of adverse reactions, varying from mild to serious.

Common Side Effects

• Headache: mild to moderate intensity.
• Dizziness or light‑headedness.
• Fatigue or tiredness.
• Bradycardia: slower than normal heart rate.
• Nausea or gastrointestinal discomfort.
• Nasal congestion.

Serious or Rare Side Effects

• Severe bradycardia or heart block.
• Acute bronchospasm, especially in asthmatic patients.
• Allergic reactions such as rash, itching or angioedema.
• Liver enzyme elevation or hepatitis.
• Hypotension leading to fainting.
• Cardiac failure exacerbation.

When prescribing Nebivolol, clinicians should observe several precautionary measures to ensure patient safety.

• Monitor blood pressure: check regularly after initiation and dose adjustments.
• Assess heart rate: watch for excessive bradycardia, especially in patients with conduction disorders.
• Use caution in asthma or chronic obstructive pulmonary disease: β‑blockade may precipitate bronchospasm.
• Avoid abrupt discontinuation: taper dose to prevent rebound hypertension.
• Adjust dose in renal impairment: consider reduced clearance in severe kidney disease.
• Store at room temperature: keep in the original container, protect from moisture and direct sunlight.

Nebivolol can interact with other medicines, altering its efficacy or safety profile.

Major Interactions (Avoid)

• Other β‑blockers: additive cardiac depression.
• Calcium channel blockers (verapamil, diltiazem): may cause marked bradycardia or AV block.
• Clonidine: abrupt withdrawal can lead to severe hypertension.
• Antiarrhythmic agents (e.g., amiodarone): increase risk of conduction disturbances.
• MAO inhibitors: potential for hypertensive crisis.

Moderate Interactions (Monitor Closely)

• NSAIDs: may blunt antihypertensive effect.
• Diuretics: can enhance hypotensive response.
• ACE inhibitors or ARBs: monitor for excessive blood‑pressure reduction.
• Antidiabetic drugs: may mask hypoglycemia symptoms.
• CYP2D6 inhibitors (e.g., fluoxetine): may increase nebivolol plasma levels.