Consult a health care practitioner prior to use if you are pregnant or breastfeeding, if you have fever, vomiting, bloody diarrhea or severe abdominal pain. Do not use if you have an immune-compromised condition (e.g. AIDS, lymphoma, patients undergoing long-term corticosteroid treatment). If symptoms of digestive upset (e.g. diarrhea) occur, worsen or persist beyond three days, discontinue use and consult a health care practitioner. This product contains lactose, dextrin and potato starch, do not use if you have such allergies.