An increase in stomach gas or bloating may occur. If this effect lasts or gets worse, notify your doctor or pharmacist promptly. Tell your doctor right away if you have any serious side effects, including: signs of infection (such as cough that doesn't go away, high fever, chills). A very serious allergic reaction to this product is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing. This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist. In the US - Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at www.fda.gov/medwatch. In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.

Some medications that may interact with certain probiotics include: antibiotics, antifungals (such as clotrimazole, ketoconazole, griseofulvin, nystatin).