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When the term "alpha blocker" is used without further qualification, it can refer to an α 1 blocker, an α 2 blocker, a nonselective blocker (both α 1 and α 2 activity), or an α blocker with some β activity. [2] However, the most common type of alpha blocker is usually an α 1 blocker. Non-selective α-adrenergic receptor antagonists include:
Alpha-1 blocker, blocks alpha receptors and it relaxes the smooth muscles in the bladder. It helps the urine to flow smoothly and it can lessen the pain caused by the bladder pressing on the prostate. [44] [45] Selective alpha-1 blockers are better tolerated than non-selective alpha blockers in the body and therefore works better on BPH. [2]
Non-selective alpha blocker: Paroxysmal hypertension, pheochromocytoma-induced sweating [24] Dibenzyline [25] Phentolamine: Non-selective alpha blocker: Reversal agent for unnecessary prolonged local analgesia [26] Regitine [27] Prazosin: Selective alpha-1 blocker: Hypertension, benign prostatic hyperplasia, PTSD associated nightmares and ...
Clinically, non-selective alpha antagonists block alpha receptors (but do not differentiate between alpha-1 and alpha-2). They are used as antihypertensives because they block alpha-receptor-mediated vasoconstriction. The block on alpha-2 receptors further potentiates beta-effects, increasing cardiac output.
3.1 Alpha blockers. 3.2 Beta blockers. 3.3 Mixed action. 4 Major effects. 5 Medical uses. 6 Limitations. ... This drug is a non-selective α-adrenergic antagonist ...
[1] [9] Alpha 2 blockers are rarely utilised in clinical practice because of their substantial off-target binding and associated risks. [1] Non-selective beta blockers. Non-selective beta blockers can cause a range of adverse effects, including bradycardia, hypotension, fatigue, dizziness, nausea, and constipation. [10]
An adrenergic agonist is a drug that stimulates a response from the adrenergic receptors.The five main categories of adrenergic receptors are: α 1, α 2, β 1, β 2, and β 3, although there are more subtypes, and agonists vary in specificity between these receptors, and may be classified respectively.
Alpha-adrenergic agonists are a class of sympathomimetic agents that selectively stimulates alpha adrenergic receptors. The alpha-adrenergic receptor has two subclasses α 1 and α 2. Alpha 2 receptors are associated with sympatholytic properties. Alpha-adrenergic agonists have the opposite function of alpha blockers.