Iron is not only one of the earth's most abundant minerals, but it also plays an important physiological role in the human body. While iron is readily available from dietary sources including red meat, seafood and cereals, sometimes an extra supplement may be required. Slow release iron, also known as ferrous sulfate, is one type of supplement available over the counter at most pharmacies. Consult your physician before taking any supplement or medication.
About Iron
Iron is a mineral that plays an essential role in transporting oxygen and carbon dioxide in the body. Iron is contained by special proteins called hemoglobin in red blood cells and myoglobin in muscle tissue. It is also involved in other cellular processes, enzymes and proteins. When you receive an inadequate amount of iron from dietary sources, iron deficiency or anemia results. The symptoms of anemia include lethargy, frequent infections, diminished performance at school or work, difficulty regulating internal temperature and inflammation of the tongue.
Slow-release Iron Supplements
Iron supplements come in two different forms -- ferrous and ferric iron. Ferrous iron is generally better absorbed and is available commercially as three types of iron salts -- fumarate, sulfate and gluconate. While other forms of iron may require multiple doses throughout the day, slow release iron is prepared so that the supplement is released gradually. Consequently, you need only take one dose of the slow-release iron per day.
Side Effects
Unfortunately, taking slow release iron supplements can cause unpleasant side effects including diarrhea, heartburn, constipation, upset stomach, vomiting and black or green-colored stools. Ordinarily, ferrous sulfate should be taken on an empty stomach with water or juice. If the supplement upsets your stomach, however, try taking it with a small snack such as crackers or a piece of bread. According to Children's Hospital of Pittsburgh, slow-release iron should not be taken within one to two hours of eating spinach, dairy products, antacids, eggs, coffee, tea or fiber as these foods decrease your body's ability to absorb iron.
Precautions
Consult your physician before taking ferrous sulfate and take the supplement only as prescribed. The symptoms of iron overdose include nausea, blood stools, stomach pain, vomiting blood that has the appearance of coffee grounds, seizures, cyanosis, shortness of breath, pallor and a weak or irregular pulse. Iron toxicity can be fatal, so you should seek emergency medical care if you suspect an overdose.
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