TB4 is comprised of a chain of 43 amino acids. Because of its large size, it does not absorb through oral, nasal, or sublingual administration. TB4-Frag is a part of this chain that is only 4 amino acids in length to be absorbed orally.

Integrative Peptides has gone through extensive research and manufacturing processes to ensure that our peptides are effective and easily absorbed in the system. While no oral administration of any product is more bioavailable than intravenous or intramuscular injection, we have adjusted our dosing to ensure therapeutic benefit without the hassle of puncturing the skin. Our products are easily transportable and provide an alternative solution to injections.

Our products are gastrically stable and can be taken with or without food. Some reports, however, indicate that absorption for supplements are better on an empty stomach.