Possible Long-Term Considerations Some early studies suggest that prolonged or repeated use may cause desensitization of the melanocortin system
In the United States , IGF-1 is a controlled substance and is banned by most professional sporting bodies, including the World Anti-Doping Agency (WADA) , where it appears on the Prohibited List under peptide hormones and growth factors
Some aggressive healing protocols run shorter, more intense cycles of 4 to 6 weeks at higher doses, followed by equivalent off-periods
Sessions are usually scheduled 36 weeks apart or up to 8 weeks apart
The EMBO journal 24 , 15711583, (2005)
Hair Growth +30-50% follicles An increase in hair follicle size of 30 to 50% has been documented in hair restoration research studies