Drink plenty of water. Do not use when abdominal pain, nausea or vomiting are present or if you develop diarrhea. If you are pregnant or breastfeeding, seek the advice of a health professional before taking this product. Do not take while on warfarin therapy without medical advice. This product contains selenium which is toxic in high doses. A daily dose of 150 micrograms for adults of selenium from dietary supplements should not be exceeded.