ADHD Medication Conversion & Equivalence Calculator
Estimate dose equivalence between ADHD medications, visualize 24-hour plasma decay curves, and generate a gradual taper schedule. For education only -- always confirm any change with your prescriber.
Medical Disclaimer
This calculator provides general educational equivalence estimates, not medical advice. Never change, stop, or start a stimulant or non-stimulant medication without direct guidance from your prescribing clinician.
20mg of Adderall IR is approximately equivalent to 67.8mg of Vyvanse.
24-Hour Pharmacokinetic Decay Curve
Relative plasma concentration over time, normalized to peak level (100%).
4-Week Discontinuation / Taper Schedule
A gradual dose reduction plan starting from 20mg. Always taper under clinician supervision.
| Week | Target Dose % | Dose (mg) |
|---|---|---|
| Week 1 | 100% | 20mg |
| Week 2 | 75% | 15mg |
| Week 3 | 50% | 10mg |
| Week 4 | 25% | 5mg |
Frequently Asked Questions
This tool uses commonly published potency ratios and pharmacokinetic reference values to estimate equivalence. Individual response varies by metabolism, tolerance, and formulation, so results are educational estimates, not prescribing guidance.