Idiopathic thrombocytopenic purpura is found among people who take Doxazosin mesylate, especially for people who are male, 60+ old , have been taking the drug for 2 - 5 years, also take medication Diltiazem Hydrochloride, and have Atrial fibrillation/flutter. Doxazosin is extensively metabolised in man and in the animal species tested, with the faeces being the predominant route of excretion. The mean plasma elimination half-life is 22 hours thus making the drug suitable for once daily administration. Doxazosin Mesylate is the mesylate salt form of doxazosin, a quinazoline compound with smooth muscle relaxing activity. Doxazosin mesylate selectively antagonizes alpha-1-adrenergic receptors in smooth muscle of the bladder neck and prostate, thereby relaxing the smooth muscle and decreasing the obstruction and urethral resistance seen with. Summary. Thrombocytopenia is found among people who take Doxazosin mesylate, especially for people who are male, 60+ old , have been taking the drug for 1 - 6 months, also take medication Furosemide, and have Preventive health care. Indications, dose, contra-indications, side-effects, interactions, cautions, warnings and other safety information for DOXAZOSIN. In Summary. Commonly reported side effects of doxazosin include: dizziness, fatigue, vertigo, hypertension, symptomatic orthostatic hypotension, malaise, and orthostatic hypotension due to drug. Hypertension: Doxazosin is indicated for the treatment of hypertension and can be used as the sole agent to control blood pressure in the majority of patients. Doxazosin tablets, USP are available containing Doxazosin mesylate, USP equivalent to 1 mg, 2 mg, 4 mg or 8 mg of Doxazosin. The 1 mg tablets are available as white to off-white caplet-shaped tablets, debossed with 'AC 356 on one side and scored on the other side. Introduction This page is designed to help you determine the relationship, if any, between DOXAZOSIN and THROMBOCYTOPENIA. In doing so, we compare DOXAZOSIN with other drugs that cause THROMBOCYTOPENIA, to help you evaluate whether or not DOXAZOSIN causes THROMBOCYTOPENIA.