CapseraGenitourinary
11 source-linked study cards in this body system.
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Drug classes in this body system
How each medicine works
Medicines in this body system: 11 · in a drug class: 7 · drug classes: 3
| Tamsulosin — Blocks alpha-1 adrenoceptors with selectivity for receptors in the human prostate. Relaxation of prostate and bladder-neck smooth muscle improves urine flow and BPH symptoms. |
| Finasteride — Competitive, specific inhibitor of type II 5-alpha reductase, blocking conversion of testosterone to DHT. |
| Oxybutynin — Relaxes bladder smooth muscle by a direct antispasmodic effect and by inhibiting the muscarinic action of acetylcholine. |
| Sildenafil — During sexual stimulation, PDE5 inhibition enhances nitric oxide effects by reducing cGMP breakdown in the corpus cavernosum, supporting smooth-muscle relaxation and blood inflow. Recommended doses have no effect in the absence of sexual stimulation. |
| Tadalafil — Inhibits PDE5, raising cGMP in corpus cavernosum smooth muscle; needs sexual stimulation to release nitric oxide. |
| Doxazosin — Selectively blocks postjunctional alpha-1 receptors, lowering urethral resistance and systemic vascular resistance. |
| Mirabegron — Activates beta-3 receptors, relaxing the detrusor during bladder filling and increasing bladder capacity. |
| Phenazopyridine — Excreted in urine, where it exerts a topical analgesic effect on urinary tract mucosa; exact mechanism unknown. |
| Terazosin — Alpha-1 adrenoceptor antagonist; relaxes smooth muscle, easing the dynamic component of BPH outlet obstruction. |
| Dutasteride — Competitively inhibits type 1 and type 2 5-alpha reductase, blocking conversion of testosterone to DHT. |
| Solifenacin — Competitive muscarinic receptor antagonist; muscarinic receptors mediate cholinergic bladder smooth muscle contraction. |
Each summary is the mechanism line from the medicine’s study card.
Listed most often on cards in this body system
Common side effects
Headache · 6/11: Tamsulosin, Oxybutynin, Sildenafil, Tadalafil, Mirabegron, Phenazopyridine
An item counts as shared only when both cards use the same wording. If a card does not list an item, that is not a statement that the effect never occurs.