This is a neurotic and dumb question. I did call my doc but he hasn't called back yet. I know that this is not a steroid. However, my understanding is that topical steroids end up in your system if you use them a lot. Steroids in your system make the Covid Vaccine less effective. Do you think this Praxomine Hydrochloride is the same way? Make the shot less effective. I've been searching online but I'm not finding answers. Thanks you for any help.