 [ Symptoms ] can penicillin cause gums to bleed my 2 yr old grandson was very ill with vomiting and with fever of 100 when taking asprin and 104 when it wore off first dr visit they only game him medication for vomit and recommended children tylenol we took him back after 4 days as fever continued to be high they gave him penicillin shot and now his gums are bleeding and are very tender he crys when we try to brush his teeth [ Disease ] assuming you do not have a particular mold allergy this bread mold should have no adverse effects