Most medications have there full potency for a while after expiration but will gradually start to lose some after a while. My buddy has some expired gh that I am considering buying from him at a deeply discounted price but I'm not sure if I should even bother.
I haven't seen it but I think it might be expired for over a year now. My friend isn't trying to unload it on me but I thought I might make him an offer if you guys thought that it might still be relatively potent. - cbeaks
Unless he kept it refrigerated the entire year, it has lost potency. Some say, under the ideal conditions of refrigeration, it may be good for two years.