REVIEW Naftopidil (Flivas) is an selective alpha1-adrenergic receptor antagonist or alpha blocker with a Ki of 58.3 nM. Naftopidil (Flivas) is an antihypertensive agent. Naftopidil (Flivas) binds specifically to alpha 1-adrenoceptors. The Ki values are 58.3 nM for naftopidi. In Japan, naftopidil is being used as a treatment for the bladder outlet obstruction in patients with benign prostatic hyperplasia.
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