Haha yea I may be biased because I love MK677! This last run I have been on for close to 5 months now and plan to keep going as long as I can. I stocked up so I wouldn't run out for at least another year or so maybe even a couple if I stick to 25mg but I may up the dose to 50mg and play with that after about 6 months on it. I've ran it for close to a year before without a hitch. I've heard of these so-called psychological issues and it came from Dat who was pushing ghrp and ghrh which I've ran and sold both in the past and my honest opinion is MK677 is the best bang for the buck and blows the traditional GH secretagogues/peptides out of the water. I still like to add Hexarelin, ghrp2, dac, or igf when I want an extra boost but MK677 is my base GH supplement. I would say yes go for as long as you can afford/handle. The longer the better with any GH/IGF supplement.