How to calculate dosing and titration for DYANAVEL XR (amphetamine)

Use the calculator below to determine the bottle size to write for your patient’s prescription.*

Calculator Directions

  • Select a starting dose of 1 mL (2.5 mg) or 2 mL (5 mg).
  • Then add subsequent doses as needed, specifying the new dose amount to be taken and for how many days (dose adjustments can be made every 4 to 7 days). The dose can be increased by 1 mL (2.5 mg) to 4 mL (10 mg) per day from the previous dose specified. The maximum daily dose is 8 mL (20 mg).
  • The total number of days for all doses specified (including the # of days for the starting dose) must add up to 30 or 31 days.
Enter starting dose
Daily dose:
Take dose for:
DYANAVEL XR (2.5mg/mL)
Dispense mL
*Prior to treating pediatric patients and adults with CNS stimulants, including DYANAVEL XR, assess for the presence of cardiac disease (i.e., perform a careful history, family history of sudden death or ventricular arrhythmia, and physical exam) and risk for abuse. The recommended starting dose is 2.5 mg (1 mL) or 5 mg (2 mL) given orally once daily in the morning. Dosage may be increased or decreased in increments of 2.5 mg (1 mL) to 10 mg (4 mL) per day every 4 to 7 days. Daily dosage above 20 mg (8 mL) is not recommended.