IGF-lr3 and DES

Hey so I've did a little research on these two and didn't really find much.. I know that des is used as a pwo on different muscle group and lr3 is best post work out..and they are used for a pct after a cycle and are used to get lean body mass.. So my questions are they juice?.. Is it safe for me to cycle it during a cutt (20yo).. I know it's a 5 week cycle at 100mcg but does it shut off ur body's natural igf ... Basically could you please tell any knowledge you have on the topic/ experiences