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Beta blocker. Skeletal formula of propranolol, the first clinically successful beta blocker. Beta blockers, also spelled β-blockers, are a class of medications that are predominantly used to manage abnormal heart rhythms (arrhythmia), and to protect the heart from a second heart attack after a first heart attack (secondary prevention). [1]
Adrenergic blocking agent. Adrenergic blocking agents are a class of drugs that exhibit its pharmacological action through inhibiting the action of the sympathetic nervous system [1] in the body. The sympathetic nervous system (SNS) is an autonomic nervous system that we cannot control by will. It triggers a series of responses after the body ...
Receptor antagonist. Antagonists will block the binding of an agonist at a receptor molecule, inhibiting the signal produced by a receptor–agonist coupling. A receptor antagonist is a type of receptor ligand or drug that blocks or dampens a biological response by binding to and blocking a receptor rather than activating it like an agonist.
Serotonin. A serotonin reuptake inhibitor (SRI) is a type of drug which acts as a reuptake inhibitor of the neurotransmitter serotonin (5-hydroxytryptamine, or 5-HT) by blocking the action of the serotonin transporter (SERT). This in turn leads to increased extracellular concentrations of serotonin and, therefore, an increase in serotonergic ...
Medical uses. Angiotensin II receptor blockers are used primarily for the treatment of hypertension where the patient is intolerant of ACE inhibitor therapy primarily because of persistent and/or dry cough. [6] They do not inhibit the breakdown of bradykinin or other kinins, and are thus only rarely associated with the persistent dry cough and ...
Long-acting β adrenoceptor agonists (LABAs) are beta-adrenergic agonists usually prescribed for moderate-to-severe persistent asthma and chronic obstructive pulmonary disease (COPD). LABAs are designed to reduce the need for shorter-acting β 2 agonists such as salbutamol (albuterol), as they have an approximately twelve-hour duration of ...
Sodium channel blockers are used in the treatment of cardiac arrhythmia. They are classified as "Type I" in the Vaughan Williams classification. Class I antiarrhythmic agents interfere with the (Na +) channel. Class I agents are grouped by their effect on the Na + channel, and by their effect on cardiac action potentials.
Calcium channel blockers (CCB), calcium channel antagonists or calcium antagonists[2] are a group of medications that disrupt the movement of calcium (Ca2+. ) through calcium channels. [3] Calcium channel blockers are used as antihypertensive drugs, i.e., as medications to decrease blood pressure in patients with hypertension.