SSS Tonic, High Potency Vitamin B, and Iron Supplement, taken as directed, give you more than the minimum daily iron and certain important B-complex requirements. These vitamins help your body's metabolism process, turning food into fuel; getting the recommended amounts of vitamins each day is an essential part of the nutrition equation. Iron is necessary for your blood to help move oxygen throughout your body; all the cells in our body need it, especially the red blood cells. When it comes to maintaining healthy energy levels, both B vitamins and iron are the nutrients to consider.