Archive for Vyvanse dose

Vyvanse Dosage: How to Get the Right Dose

Vyvanse is the newest medicine for ADD or ADHD in the USA. I have written several articles on this blog on Vyvanse, and have had great feedback and comments from readers of this blog. For example – if you want to find out if vyvanse works, visit this post to read many people’s first hand experiences.
One question which many people ask is about the dosing of Vyvanse.
This article will provide you with the answers you need to get the right dosage of Vyvanse.

Research studies compared the dosing of Vyvanse with Adderall XR. What this research showed was the following:

  • Vyvanse 30 mg = Adderall XR 10 mg
  • Vyvanse 50 mg = Adderall XR 20 mg
  • Vyvanse 70 mg = Adderall XR 30 mg

The recommendations for the starting doses of Vyvanse are as follows: Doctors should start Vyvanse at 30 mg, and then gradually increase the dose to 50 mg, and then up to 70 mg if needed. Of course the doctor would monitor response to the medicine (i.e. if there is a great response and ADHD is controlled at 50 mg, then there is no need for 70 mg of Vyvanse). The doctor will also monitor for side effects – i.e. if there are too many side effects at 70 mg, then the dose may need to be dropped to 50 mg of Vyvanse.

The importance of the ‘conversion’ dosing listed above relates to those people who may switch from one stimulant medicine to Vyvanse. Using the information above, you can figure out how to change your dose of Adderall XR to Vyvanse.

When it comes to the available strenghts of Vyvanse, Vyvanse is now available in the US in the following dosage strengths:

  • 20 mg
  • 30 mg
  • 40 mg
  • 50 mg
  • 60 mg
  • 70 mg

In Canada, all of the dosage strenghts are available except for the 70 mg dose.┬áThe dosage recommendations above are the general recommendations for dosage. That said, your doctor may start lower, and may take a different approach to your dosing. When Vyvanse was first release, there were fewer strengths of the medicine available – i.e. only 30mg, 50 mg and 70 mg. Now, there are the ‘in between’ doses as well (the 20 mg, 40 mg, 60 mg). This does give doctors more flexibility in adjusting the dose to tailor it to suit you.

If you are switching from Concerta to Vyvanse, then you will need to follow these rough guidelines (and of course, talk to your doctor – who can personalize the information to suit your treatment):

  • Concerta 36 mg = approx. Vyvanse 30 mg
  • Concerta 72 mg = approx. Vyvanse 50 mg

I have to say that the dose changes from Concerta to Vyvanse are based on logic, and not on research.
Here is the logic:

  1. Concerta 36 mg works out to approx. 8 mg of regular ritalin three times daily.
  2. That is approximately 5 mg of regular adderall twice daily.
  3. That works out to approximately Adderall XR 10 mg once daily.
  4. Since Adderall XR 10 mg daily is equal to Vyvanse 30 mg, once can guess that Concerta 36 is equal to approximately Vyvanse 30 mg.

[Click here for a full review of how to calculate concerta doses.]

There are two important points to remember here:

  1. Even though I can suggest what the equal doses are, you may react differently to any one medicine. Only testing, monitoring and talking to your doctor will help to sort out what the right dose is for you.
  2. Please talk to your doctor about your individual care. Even though this blog article may help you to find the right dose of Vyvanse based on a combination of my review of the research and my opinion, your doctor is an expert in your care.

Thank you for reading, and please post any comments or your experiences with the dosing of Vyvanse in the comments below.

Dr. Kenny

(Updated May 2010)

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