which is better sermorelin tesamorelin or ipamorelin vs Tesamorelin vs Sermorelin: A Medical
Description
Graded exercise therapy for patients with chronic fatigue syndrome in secondary care - a benchmarking study

They are classified as research chemicals in many regions and may be restricted by anti-doping agencies like WADA

10.1183/09031936.00084108 93 MassaguJ
This is most likely due to the degree of the exposure to environmental factors among different ethnic groups [13, 14]