Yes and no mate.
Testosterone already gives a massive increase in IGF-1 levels even at low doses. MK677 causes lethargy in many users, and i know of several people that simply can't function during the day on MK677 and they had to stop its use completely. Some even tried fairly strong stims to counteract the lethargy and still the MK made them tired. Others reduce the MK dose down to about 10-15mg ed and they say this reduces side effects but still gives positive effects.
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