The therapeutic range is based on serum pre-dose (trough) draw at steady-state concentration. A proposed therapeutic range is 1.0-3.5 µg/mL for a 2 g/day dose. A 3 g/day dose may have plasma concentrations up to 5.0 µg/mL. Trough concentrations between 2.0 and 4.0 µg/mL have been suggested to maximize efficacy and minimize adverse effects. Mycophenolic acid glucuronide is an inactive metabolite and a range of 35-100 µg/mL indicates normal metabolism. During the first two weeks of transplantation, mycophenolic acid glucuronide concentrations are typically 100-250 µg/mL. Mycophenolic acid acyl-glucuronide is an active metabolite and the therapeutic and toxic ranges are not well established. Adverse effects of toxicity include abdominal pain, peripheral edema, cardiac abnormalities, hypertension and electrolyte disturbances.