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Beta blockers are competitive antagonists that block the receptor sites for the endogenous catecholamines epinephrine (adrenaline) and norepinephrine (noradrenaline) on adrenergic beta receptors, of the sympathetic nervous system, which mediates the fight-or-flight response.
Propranolol, sold under the brand name Inderal among others, is a medication of the beta blocker class. It is used to treat high blood pressure, a number of types of irregular heart rate, thyrotoxicosis, capillary hemangiomas, performance anxiety, and essential tremors, as well to prevent migraine headaches, and to prevent further heart problems in those with angina or previous heart attacks.
Pages in category "Beta blockers" The following 119 pages are in this category, out of 119 total. This list may not reflect recent changes. ...
Aponal, Quitaxon, Sinequan ( doxepin) – a tricyclic antidepressant used to treat nerve pain, insomnia; similar to imipramine. Anquil ( benperidol) – an antipsychotic primarily used to control antisocial hypersexual behaviour. Aricept ( donepezil) – used to slow the progression of Alzheimer's disease. Ativan ( lorazepam) – a ...
Development History. The β-blockers are an immensely important class of drugs due to their high prevalence of use. The discovery of β-blockers reaches back to more than 100 years ago, when early investigators came up with the idea that catecholamines were binding selectively to receptor-like structures and that this was the cause of their pharmacological actions.
Alpha blockers work by blocking the effect of nerves in the sympathetic nervous system. This is done by binding to the alpha receptors in smooth muscle or blood vessels. [37] α-blockers can bind both reversibly and irreversibly. [2] There are several α receptors throughout the body where these drugs can bind.
Contents. 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.
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 .