Ask a doctor

Botox dosage VS Dysport dosage?

BOTOX - 25ū each jaw, 37.5ū for forehead&glabellar&crowfeet (can't remember specific unit on each area). DYSPORT - 100ū each jaw, 70ū forehead, 40ū glabellar, 50ū crowfeet. Based on the units mentioned above, which one is stronger if inject to a same person? Botox or Dysport? How's the calculation work? Hopefully to hope from you all soon. Thanks.

Doctor Answers (4)

Botox vs Dysport

Botox comes in 50U and 100U bottles. Dysport comes in 300U bottles. Assuming the Botox and Dysport are diluted equally (with 3 ccs of sterile saline) and the mixture is fresh, there is 1U of Botox for every 3U of Dysport.

25U B = 75U D and you received more: 100U D to jaw
37.5 B = 81.5 D and you received less: 70U D to forehead, 40U glabellar, 50U crows feet 

Consult a Board Certified Plastic Surgeon

A recent study - Based on a triple blind study conducted by triple board certified, celebrity plastic surgeon Dr. Ramtin Kassir, a test of the efficacy and safety of popular injectables, brand named "Botox" and "Dysport;" it is now affirmed that Dysport delivers faster and longer lasting results than other comparative botulinum toxins.

I don't believe this study was a randomized, double blind, prospective study so take it for what its worth.

West Orange Plastic Surgeon
5.0 out of 5 stars 16 reviews

How many "Botox units" of Dysport are needed


The conversion I use is 2.5 units of Dysport to 1 unit of Botox. So multiply the Botox units by 2.5 to get a good starting point for Dysport dose that will be required for a similar effect.

Stephen Weber, MD, FACS
Denver Facial Plastic Surgeon
5.0 out of 5 stars 43 reviews

I like to use 4 to 1 Dysport to Botox


I like to use a 4 Dysport Units  to 1 Botox unit.  Most of my patients who have used both feel that they get a little faster onset and longer duration with a dose higher than the 2.5 to 1 conversion. 

Mark Taylor, MD
Salt Lake City Dermatologic Surgeon
4.0 out of 5 stars 11 reviews

You might also like...

Dysport Units Compared to Botox Units


There is no perfect answer to this question.  However, most people get a near equivalent result using 2.5 units of Dysport where they would have used 1 unit of Botox.  You are getting Dysport at 4 times the Botox units in your Jaw, so I would expect a stronger result with Dysport.  

Louis W. Apostolakis, MD
Austin Facial Plastic Surgeon
5.0 out of 5 stars 20 reviews

These answers are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.