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The two primary drug classes used for BPH are: Alpha-blockers. These drugs relax smooth muscles, especially in the bladder neck and prostate. They include terazosin (Hytrin), doxazosin (Cardura), tamsulosin (Flomax), alfuzosin (Uroxatral), and silodosin (Rapaflo). Alpha-blockers help relieve BPH symptoms, but they do not reduce the size of the prostate.
Some examples of commonly prescribed skeletal muscle relaxant medications include carisoprodol (Soma), cyclobenzaprine (Flexeril), and metaxalone (Skelaxin), which are taken in tablet form. Muscle relaxant drugs are only available by prescription in the U.S. Other types of muscle relaxant drugs (neuromuscular blocking drugs) are sometimes used during the induction of general anesthesia or during insertion of an endotracheal (ET) tube. These muscle relaxants are given intravenously (through the bloodstream) and act directly on the muscles. Examples of muscle relaxants used during surgical procedures include succinylcholine (Anectine, Sucostrin), atracurium (Tracrium), and pancuronium (Pavulon).