I think ghrp6 AFTER igf b/c the introduction of exogenous igf might cause the body to decrease its own production of igf (i.e. thru gh). Therefore I would use the secretagogue AFTER to increase your production.
But I defer to datBtrue's much more well founded opinions.
bb
Nothings really clear in the studies.
I use to think IGF-1 would provide negative feedback and I feel it still does but perhaps that is transitory and not prolonged and that there is genuine benefit to using both.
Here is what I KNOW (because the studies are clear). GHRP-6 only elevates IGF-1 for short (non-chronic periods). That is a reason why CJC-1295 is so good to run with GHRP-6 BECAUSE it chronically elevates IGF-1 (as does daily admininistration of synthetic GH).
Giving GHRP-6 to GH-defecient children does not create the kind of growth they wanted because the IGF-1 levels were not chronically elevated. Still sufficient for repair but not a lot of growth.
If I were you and I had GHRP-6 & IGF-1 LR3 around I would use the GHRP-6 3x a day including PWO and the IGF-1 LR3 once PWO.
I think IGF-1 won't interfere with GH release much and I think it is a great way to increase the natural family of IGF-1 which will include its isoforms and further add the long-lasting IGF-1 analog on top to insure chronicly elevated IGF-1 levels.
I have changed my thinking on this from looking at the research and listening to some real world examples of guys who used both.
Again just one one man's opinion.