Not on the same day. You could alternate them. From what I remember GHRP 2 has slightly better GH elevating properties, but can also elevate prolactin. GHRP 6 is not quite as strong of a response, but stimulates appetite better and no increase in prolactin. I'm 99% sure this is accurate. I've gotten a little rusty of my peptide knowledge, but I'll be brushing up again soon
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