Renal impairment In clinical studies Riprazo has not been investigated in hypertensive patients with severe renal impairment (serum creatinine ≥ 150 μ mol/ l or 1.70 mg/ dl in women and ≥ 177 μ mol/ l or 2.00 mg/ dl in men and/ or estimated glomerular filtration rate (GFR) < 30 ml/ min), history of dialysis, nephrotic syndrome or renovascular hypertension.