| The most effective form of IGF is Long
R3 IGF-1, it has been chemically altered and has had amino
acid changes which cause it to avoid binding to proteins
in the human body and allow it to have a much longer half
life, around 20-30 hours. "Long R3 IGF-1 is an 83
amino acid analog of IGF-1 comprising the complete human
IGF-1 sequence with the substition of an Arg® for
the Glu(E) at position three, hence R3, and a 13 amino
acid extension peptide at the N terminus. This analog
of IGF-1 has been produced with the purpose of increasing
the biological activity of the IGF peptide. It is also
not as expensive since a media grade version is available
which is sufficient for bodybuilding use. |
