This white, capsule pill imprinted with I 4336 1 mg is a Terazosin 1 MG Oral Capsule, per the NIH.
Terazosin hydrochloride is a human prescription drug. The active pharmaceutical ingredient is terazosin hydrochloride and is classified as, "Adrenergic alpha-Antagonists [MoA], alpha-Adrenergic Blocker [EPC]."
This pill is made by Teva Pharmaceuticals USA Inc.
There are 2 other white pills that with a similar imprint: "I 4336 1 mg". They may be a different dosage of the same drug or a different drug entirely.