Sentinel Ferrous Sulfate is a dietary supplement containing 325mg of ferrous sulfate (providing 65mg of elemental iron) per tablet. This 100-tablet bottle is designed to help prevent and treat iron deficiency anemia and support healthy red blood cell production. Iron supplementation should be taken under medical supervision. Common side effects may include stomach upset, constipation or dark stools. Taking iron supplements with vitamin C can enhance absorption. Iron supplements are commonly recommended for pregnant women, menstruating women, vegetarians and athletes who may have increased iron needs. The supplement comes in a sealed bottle with tamper-evident packaging for safety and freshness.