I've been doing reading on adrenerginic receptors and b1 receptors increase ghrelin(ghrp) secretion from the stomach. It was to my understanding that when ghrelin was secreted gh was triggered to release. So I started looking into it and I read a study that says when ghrh and ghrp were administered together there was no synergistic effect. And ghrp secreted less gh then ghrh. If this is true, then why do people take ghrh and ghrp together?