What causes dizziness after taking metoprolol tablets?

Dizziness after taking metoprolol tablets may be caused by fluctuations in drug dosage, changes in body position, or underlying conditions such as hypotension, sinus bradycardia, and heart failure. Seek medical attention promptly if discomfort occurs. The specific causes are analyzed as follows:

1. Drug Dosage Fluctuations

When starting the medication or suddenly increasing the dose, the drug's suppression of sympathetic nervous activity and resulting vasodilation may lead to insufficient cerebral blood supply. Begin treatment with a low dose and follow your doctor’s instructions for gradual dose adjustments—do not alter the dosage on your own.

2. Postural Changes

Sudden standing after taking the medication can cause delayed vascular regulation due to the drug effect, leading to orthostatic hypotension and dizziness. Move slowly when changing positions; sit on the edge of the bed for a few moments before slowly standing up.

3. Hypotension

The drug reduces myocardial contractility and peripheral resistance, which may lower blood pressure excessively and impair cerebral perfusion. Under medical guidance, medications such as Shengmai Oral Liquid, Midodrine Hydrochloride Tablets, or Shenmai Injection may be used. Increase daily fluid intake appropriately and avoid prolonged standing.

4. Sinus Bradycardia

The drug slows heart rate, and excessive slowing can reduce cardiac output, causing cerebral ischemia and hypoxia. Under a doctor’s supervision, treatments may include Atropine Sulfate Tablets, Isoprenaline Hydrochloride Injection, or Xinbao Pills. In severe cases, implantation of a cardiac pacemaker may be required.

5. Heart Failure

Inappropriate dosing may worsen cardiac dysfunction, reducing cardiac output and causing dizziness. Follow medical advice for use of Furosemide Tablets, Spironolactone Tablets, or Digoxin Tablets. In severe cases, cardiac resynchronization therapy may be necessary.

Maintain regular medication intake and monitor blood pressure and heart rate at consistent times daily. Slow down movements when standing or turning your head. Eat a light, low-salt diet and avoid alcohol. Schedule regular follow-up evaluations of heart function to allow timely adjustment of treatment plans by your physician.