So, maybe i'm expecting too much of tb500, but i'm definitely going to say that this stuff doesn't seem like it works for very long after the injection. The day after is great, my rats says, but then it just kinda wears off. My rat's knees have been hurting (though he's been standing A LOT longer periods of time recently), and his back has been giving him problems (also for the same reason). I know this change is the reason for my rats ailments, but i figured it would be preventing knots in the back and keeping the knees nice and loose. I haven't noticed any muscle growth since starting it either, though this effect could take longer periods of time considering i'm still at the end of the loading phase (week 4 of 5mg EW). Now, i know this isn't magic, but i definitely expected a little more by now. Am I being too impatient???