So sometimes I drink ladyboss lean meal replacer. Every so often new flavors come out. I purchased the brownie batter flavor and turns out I am having an allergic reaction to it but it's on my face. My face gets red hot and itchy and progresses to get worse over a few days. If I go to a walk in clinic what can they give me besides benadryl? I just took benadryl but last time it didn't work