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2. Metoprolol - Wikipedia

   en.wikipedia.org/wiki/Metoprolol

   Metoprolol is a beta blocker, or an antagonist of the β-adrenergic receptors. It is specifically a selective antagonist of the β 1-adrenergic receptor and has no intrinsic sympathomimetic activity. [37] Metoprolol exerts its effects by blocking the action of certain neurotransmitters, specifically adrenaline and noradrenaline.

3. Antiarrhythmic agent - Wikipedia

   en.wikipedia.org/wiki/Antiarrhythmic_agent

   Antiarrhythmic agents, also known as cardiac dysrhythmia medications, are a class of drugs that are used to suppress abnormally fast rhythms (tachycardias), such as atrial fibrillation, supraventricular tachycardia and ventricular tachycardia.

4. Beta blocker - Wikipedia

   en.wikipedia.org/wiki/Beta_blocker

   For non-cardiac surgery, the use of beta blockers to prevent adverse effects may reduce the risk of atrial fibrillation and myocardial infarctions (very low certainty evidence), however, there is moderate certainty evidence that this approach may increase the risk of hypotension. [31]

5. Atrial fibrillation - Wikipedia

   en.wikipedia.org/wiki/Atrial_fibrillation

   Atrial fibrillation is associated with an increased risk of heart failure, dementia, and stroke. [3] [12] It is a type of supraventricular tachycardia. [14] Atrial fibrillation frequently results from bursts of tachycardia that originate in muscle bundles extending from the atrium to the pulmonary veins. [15]

6. Common thyroid drug levothyroxine linked to bone mass loss - AOL

   www.aol.com/common-thyroid-drug-levothyroxine...

   Researchers from Johns Hopkins University School of Medicine in Baltimore, MD, showed that total body bone mass and density both decreased in adults over the age of 65 who received levothyroxine ...

7. Nadolol - Wikipedia

   en.wikipedia.org/wiki/Nadolol

   Nadolol is used to treat hypertension and for long-term treatment of angina pectoris and is approved by the FDA for these purposes. [8]It is regularly used off-label [8] for control of heart rate in people with atrial fibrillation, [9] prevention of migraine headaches; [10] prevention of bleeding veins in people with portal hypertension caused by cirrhosis; [4] and to treat people with high ...