DO NOT TAKE IF YOU HAVE DIFFICULTY SWALLOWING. Laxatives, including bulk fibers, may affect how well other medications work. If you're taking a prescription medicine by mouth, take this product at least 2 hours before or 2 hours after ingesting the prescribed medication. As your body adjusts to increased fiber intake, you may experience changes in bowel habits or minor bloating. ALLERGY ALERT: THIS PRODUCT MAY CAUSE ALLERGIC REACTION IN PEOPLE SENSITIVE TO INHALED OR INGESTED PSYLLIUM. Consult your physician before use if you have: a sudden change in bowel habits persisting for 2 weeks or more, abdominal pain, nausea, or vomiting. Stop use and consult your physician if: constipation lasts more than 7 days, rectal bleeding occurs. These may be signs of a serious condition. KEEP OUT OF REACH OF CHILDREN. In case of overdose, get medical help or contact a Poison Control Center immediately.