Hi Michelle, There should not be any issues with most injectables, including botox or fillers. However, some fillers require allergy testing before hand to check for potential reactions. If you are very worried you can request to be allergy tested to your potential product. The practitioner will likely need to charge a small fee for the allergy testing to cover the cost of the product and clinic time but most will accomodate the request. Hope that answers your question!
