Thankfully, it was a mild reaction, but it looked pretty bad...her muzzle was swollen, & her eyes as well (I took her to emergency cuz I thought she coudn't breathe!
). It was her 2nd round of DHPP & 1st Boedatella. The vet said it could've been the 2nd round, or the combination of both. For her 3rd round, the vet mixed in anti-inflammatory w/her shots.