Why Should a Person Not Use Dysport or Botox if They Have an Allergy to Cow Milk?

It is not an allergy to cow's milk, it is actually an allergy to the cow's milk protein.  This is only in Dysport and not in Botox.

Lactose intolerance causes bloating after consuming milk products.  This is not a true milk allergy.  If this is what you have, Botox, Dysport and Xeomin should all be safe to use.

The incidence of allergy to neuromodulators like Botox and Dysport is extremely low.  In fact, after treating thousands of patients, I have never seen an occurrence.  In years past, bovine collagen (Zyderm, Zyplast) was the only FDA approved filler available, and skin testing was required to make sure that patients with bovine allergies would not suffer adverse effects.  There are no such precautions or cross-reactivities with neuromodulators.