I was advised to avoid vit c prior to having fillers, juvederm. is that for actual vit c supplement or should i also avoid foods containing vitamin c?

Vitamin C: There is no reason to stop Vitamin C before having HA facial fillers. If you want to avoid bruising, stop all aspirin containing medications or foods that can retard normal coagulation (green tea, garlic etc.). I do advise stopping Vitamin E. May be that is what they meant. I also recommend arnica montana for 3-5 days prior to the injection.