Iron Ferrous Sulfate Vs Iron Glycinate: Which Is Better?

Iron Salt Comparison New


Iron is an essential mineral that plays a crucial role in the human body. It is required for the production of red blood cells, which carry oxygen throughout the body. Iron deficiency can lead to anemia, fatigue, and other health problems. There are several forms of iron supplements available in the market, but two of the most popular ones are iron ferrous sulfate and iron glycinate. In this article, we will discuss the differences between these two forms of iron and which one is better.

Iron Ferrous Sulfate

Iron ferrous sulfate is a common form of iron supplement that is widely available in the market. It is a salt of iron and sulfuric acid and is known for its high bioavailability. This means that the body can easily absorb and utilize the iron from this supplement. However, it has some drawbacks. Iron ferrous sulfate can cause gastrointestinal side effects such as constipation, nausea, and stomach cramps. It can also interfere with the absorption of other minerals such as zinc and copper.

Iron Glycinate

Iron glycinate, on the other hand, is a form of iron that is bound to the amino acid glycine. It is a newer form of iron supplement that is gaining popularity due to its lower side effects and higher absorption rate. Iron glycinate is gentle on the stomach and does not cause gastrointestinal side effects. It is also less likely to interfere with the absorption of other minerals. However, it is more expensive than iron ferrous sulfate.

Which is Better?

Both iron ferrous sulfate and iron glycinate have their own advantages and disadvantages. Iron ferrous sulfate is widely available and affordable, but it can cause gastrointestinal side effects. Iron glycinate is gentler on the stomach and has a higher absorption rate, but it is more expensive. If you have a sensitive stomach or have experienced side effects from iron supplements in the past, iron glycinate may be a better option for you. However, if cost is a concern or you do not experience any side effects from iron ferrous sulfate, it may be a suitable option for you.


In conclusion, iron ferrous sulfate and iron glycinate are both effective forms of iron supplements. The choice between the two depends on individual needs and preferences. It is important to consult with a healthcare professional before starting any new supplement regimen. A healthcare professional can help determine the appropriate dosage and form of iron supplement based on individual health status and needs.