It typically takes about 2 to 4 weeks to begin seeing results from your peptide therapy. After that, you will need to continue the treatment for 3 to 6 months to allow your body composition to fully adjust to the new changes. Once you’ve reached your desired result, the effects of peptide treatment can last several months without the need for continued treatment. However, peptide therapy is typically an indefinite treatment that you will eventually need to continue to maintain results, so you’ll have to return to your routine after those months have passed.