If I am understanding your question correctly, I think that
you are asking me if it is normal to vomit pink bits when
you are taking
amoxicillin. The pink could be related to the amoxicillin, or it could be something else that you ate or drank. IF you start vomiting blood or coffee grounds, that would be worrisome. Also, if you continue to vomit and are unable to keep the antibiotic down, then you need to let your doctor know. Good luck.