Metoprolol Tartrate Zentiva Pharma (Metoprolol Tartrate)

Metoprolol Tartrate is a selective β1‑blocker used in cardiovascular disease management.

• Hypertension: lowers systolic and diastolic pressure by reducing heart rate and cardiac output.
• Angina pectoris: decreases myocardial oxygen demand, relieving chest pain during exertion.
• Acute myocardial infarction: limits infarct size and improves survival when given early.
• Chronic heart failure: improves ventricular function and reduces hospitalisation risk.
• Cardiac arrhythmias: controls ventricular rate in atrial fibrillation and other supraventricular tachyarrhythmias.

• Metoprolol Tartrate selectively antagonises β1‑adrenergic receptors in cardiac tissue, inhibiting catecholamine‑induced stimulation. This reduces heart rate, myocardial contractility, and conduction velocity, leading to decreased cardiac output and lower arterial pressure while also diminishing myocardial oxygen consumption.

Metoprolol Tartrate may cause a range of adverse reactions, from mild to serious.

Common Side Effects

• Fatigue or tiredness
• Dizziness or light‑headedness
• Headache
• Bradycardia (slow heart rate)
• Cold extremities
• Gastrointestinal upset (nausea, abdominal discomfort)

Serious or Rare Side Effects

• Severe bradycardia or heart block
• Marked hypotension
• Bronchospasm, especially in patients with asthma
• Allergic reactions (rash, angioedema)
• Depression or mood changes
• Cardiac failure exacerbation

Metoprolol Tartrate requires careful clinical monitoring to minimise risks.

• Monitor blood pressure: check regularly after initiation or dose changes.
• Assess heart rate: watch for excessive bradycardia.
• Use caution in asthma or chronic obstructive pulmonary disease: β1‑selectivity may not fully prevent bronchospasm.
• Avoid abrupt discontinuation: taper gradually to prevent rebound hypertension or tachycardia.
• Adjust dose in renal impairment: reduced clearance may increase exposure.
• Store at room temperature: keep in the original container, protect from moisture and direct sunlight.

Metoprolol Tartrate can interact with several medicines, altering its efficacy or safety.

Major Interactions (Avoid)

• Verapamil or diltiazem: additive negative chronotropic effects may cause severe bradycardia.
• Clonidine: concurrent use can mask withdrawal symptoms, leading to hypertensive crisis if stopped.
• Insulin or sulfonylureas: β‑blockade may mask hypoglycaemia signs and prolong glucose lowering.

Moderate Interactions (Monitor Closely)

• ACE inhibitors: may enhance hypotensive effect.
• Diuretics: combined use can increase risk of orthostatic hypotension.
• Warfarin: may potentiate anticoagulant effect, requiring INR monitoring.