Is an institution required to provide the lot number of the vial of Botox used? They refuse to provide this, I had side effects.

We typically record the lot number of Botox used in each patient's chart. I would be very suspicious of a practice that would not provide you with the lot number. They're probably using counterfeit product. You can try filing a complaint with Allergan. Maybe they can assist you. Best of luck.

 Thank you for your question and for sharing your concern.  It is routine for a practice to record the lot number. You do have to be careful because there are some counterfeit Botox products out there.