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Terazosin, sold under the brand name Hytrin among others, is a medication used to treat symptoms of an enlarged prostate and high blood pressure. [1] For high blood pressure, it is a less preferred option. [1] It is taken by mouth. [1] Common side effects include dizziness, headache, feeling tired, swelling, nausea, and low blood pressure with ...
Alternative alpha blockers, such as prazosin, tamsulosin, doxazosin, or terazosin can have adverse interactions with beta blockers, erectile dysfunction drugs, anxiolytics, and antihistamines. [2] Again, these interactions can cause dangerous hypotension. Furthermore, in rare cases, drug interactions can cause irregular, rapid heartbeats or an ...
Prazosin is active after taken by mouth and has a minimal effect on cardiac function due to its α 1-adrenergic receptor selectivity.When prazosin is started, however, heart rate and contractility can increase in order to maintain the pre-treatment blood pressures because the body has reached homeostasis at its abnormally high blood pressure.
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Comparison between prazosin, terazosin, and alfuzosin. The conversion of the furan ring to a tetrahydrofuran ring (colored purple) contributed to an increase in half-life of terazosin. The conversion of piperazine to aminopropyl (colored red) increases the selectivity for Alpha-1a receptors.
Other drugs of the same family, doxazosin (Cardura) and terazosin (Hytrin), can also cause this phenomenon, though less frequently. The cause is not clear. It occurs more commonly in patients who are salt and fluid volume depleted (as happens due to the use of diuretics), or were using beta blockers. [4]
terazosin; tolazoline; urapidil; Mixed Alpha + Beta blockers: bucindolol; carvedilol; labetalol; clonidine (indirectly) Although beta blockers lower blood pressure, they do not have a positive benefit on endpoints as some other antihypertensives do. [35]
Alpha-blockers, including prazosin, terazosin, doxazosin, or tamsulosin, do not appear to affect all-cause mortality in heart failure rehospitalization in those also receiving β-blockers. [23] Tamsulosin can also cause retrograde ejaculation, which occurs when semen is redirected to the urinary bladder instead of being ejaculated normally.