Sentinel Ferrous Sulfate is an iron supplement containing 325 mg of ferrous sulfate, providing 65 mg of elemental iron per tablet. This dietary supplement comes in a bottle of 100 tablets and is designed to help prevent and treat iron deficiency anemia. Iron supplements should be taken under medical supervision as excessive iron intake can be harmful. Common side effects may include stomach upset, constipation, or darkened stools. For better absorption, it's recommended to take iron supplements on an empty stomach or with vitamin C. Avoid taking with calcium, milk, tea, or coffee as these can reduce iron absorption. This supplement is particularly important for individuals with increased iron needs such as pregnant women, menstruating women, vegetarians, and athletes, but they should consult their healthcare provider before use.