Stimulant Dose Conversion Calculator
Safely convert between ADHD medications like Adderall, Vyvanse, Ritalin, and Concerta using clinically recognized equivalencies
Input Your Current Medication
Note: Conversions are based on clinical guidelines and published equivalency studies. Individual responses may vary.
Conversion Results
Enter your medication details and click “Calculate”
Important Disclaimer
This calculator provides approximate conversions based on clinical guidelines and published equivalency studies. Results should never be used to self-adjust medications without consulting a healthcare provider. Individual responses to medications vary significantly based on metabolism, other health conditions, and genetic factors. Always follow your prescribing physician’s instructions.
Understanding Stimulant Conversions
Stimulant medications for ADHD are not directly interchangeable. Conversion factors are based on:
- Pharmacological equivalency studies
- Clinical practice guidelines
- Bioavailability differences
- Duration of action
Key conversion ratios:
| Medication | Equivalent Ratio |
|---|---|
| Adderall to Vyvanse | 1:2.5 |
| Adderall to Ritalin | 1:1 |
| Ritalin to Concerta | 1:1.8-2.2 |
| Adderall to Dexedrine | 1:0.75 |
| Ritalin to Focalin | 1:0.5 |
Key Considerations
When converting between stimulant medications:
- Extended-release formulations have different conversion factors than immediate-release
- Individual response varies by up to 30%
- Medications have different side effect profiles
- Conversion is not recommended without medical supervision
- Tolerance and medication history affect dosing
Note: Vyvanse (lisdexamfetamine) is a prodrug that requires enzymatic conversion in the body, resulting in a smoother onset and longer duration compared to other stimulants.
Safety Information
Stimulant medications require careful management:
- Cardiovascular monitoring is recommended
- Not recommended with certain heart conditions
- Potential for abuse and dependence
- May interact with antidepressants and other medications
- Report any new psychiatric symptoms immediately
Regular follow-up with your healthcare provider is essential when taking stimulant medications. Never share your medication with others.