Both Modified GRF and Sermorelin are peptides, however, the two function quite differently and have had different impact on the body. That is why it is important to understand the two different peptides before you decide to use them in any form.

Modified GRF

Modified GRF is a peptide that comprises of 29 amino acids peptide. GRF stands for growth hormone releasing factor, so it aids in the release of more hormones.


Sermorelin has pretty much the same aspects as the Modified GRF, it is a 29 amino acid peptide. Its function is pretty much the same as modified GRF.

So what’s the difference?

If you ask an average person, they probably wouldn’t even know the difference between the two. Most people refer to the two as the same. However, they do differ in some ways. The biggest difference deals with the half life of the two. Modified GRF has a longer half life than Sermorelin, this makes the impact of the peptide last longer. Not only that but the spike of growth hormones from use is higher with the modified GRF than sermorelin.

If you look at the profile of the two peptides you can see the difference between the two. Since Sermorelin isn’t as impactful as modified GRF studies have shown that there are no serious side effects to it, just mild ones. These may be: irritation of the skin, swelling or redness, headache, nausea, hyperactivity and dizziness. The study showed that only about one percent of the patients actually had these symptoms while the other experienced nothing. Modified GRF may have a more serious case of the above, depending on how your body reacts to it.

Sermorelin is a peptide that is popular for both adults and children whether it is for anti-aging in adults or for height disorder in children. Since it isn’t as powerful as modified GRF, it can be used without expecting much of a drawback. There are numerous studies that show that sermorelin is safe for use as a treatment over a long period of time. There aren’t many studies proving the same for modified GRF.

When you consider using peptides, it is important you do your research beforehand to understand them. With numerous studies about almost any peptide you want online, you can easily find out everything you need.