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[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]
One of the most common side effects with alpha blockers is the first dose effect. [29] This is a phenomenon in which patients with hypertension take an alpha blocker for the first time, and suddenly experience an intense decrease in blood pressure.
It was the first alpha blocker which was used for treating Benign Prostatic Hyperplasia. [22] Another Alpha Blocker Prazosin, which was the first drug selective to alpha 1 receptor, was developed in 1987 [22] for the therapy of Benign Prostatic Hyperplasia. Other alpha blockers are then introduced for several diseases. [22]
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]
[70] [64] However, various neurochemical, hormonal, and biochemical changes during SSRI use—such as reduced dopamine levels, increased serotonin, inhibition of nitric oxide synthase, and the blocking of cholinergic and alpha-1 adrenergic receptors—could account for their sexual adverse effects.
[9] [6] Other side effects may include feeling lightheaded with standing due to changes in blood pressure, and angioedema. [9] Tamsulosin is an alpha blocker and works by relaxing muscles in the prostate. [10] Specifically it is an α 1-adrenergic receptor blocker. [6] Tamsulosin was approved for medical use in the United States in 1997. [6]
Alpha-2 blockers (or α 2 blockers) are a subset of the alpha blocker class of drugs and are antagonists to the α 2 adrenergic receptor. They are mainly used in research, having found limited clinical application in human medicine.
Alfuzosin, sold under the brand name Uroxatral among others, is a medication of the α 1 blocker class. It is used to treat benign prostatic hyperplasia (BPH). [1]As an antagonist of the α 1-adrenergic receptor, it works by relaxing the muscles in the prostate and bladder neck, making urination easier.