Is It Safe to Have Botox Injections While Breastfeeding my 3 Month Old?

I would not recommend having Botox or Fillers while breast feeding.  The makers of these products will never likely conduct these studies, and thus I don't think you will find an injector who would do this while you are breast feeding.The same would be for those patients who are pregnant.  Having said that if a patient came to me and said they were pregnant and recently had an injectable treatment, I would provide reassurance that the likelihood of any adverse event occurring to their baby because of that, however, I would strongly recommend them to pursue any further treatments until after they finish breast feeding.

It’s probably not a good
idea to undergo botox injections while breast feeding for a variety of
reasons.  At this time, there’s no
scientific studies that have looked at the effect of botox on either the mother
or child.  For these reasons it
would be extremely difficult to find a provider who would administer botox to
someone who was either pregnant or breast feeding.  

While there is no evidence that your baby would be harmed if using Botox while still breastfeeding, you will likely not find a physician (at least an ethical one) willing to inject you.

It's too much of a liability to provide a cosmetic (unnecessary) treatment at a time when you are still breastfeeding.  Wait a couple months just to be safe.