it appears legit but i have never heard of russell pharm from canada.... are you just injecting in the glutes? could it be that ur not giving the area enough time to heal and you are bruising or scarring the muscle too much? have you tried going glute, thigh, opposite glute, opposite thigh for injection days?
i had soreness to the point where i couldnt walk when taking 1-test cyp injections EOD, it may be legit stuff but just a hard injection. I know my good friend made the stuff and he always makes me my stuff so it isnt a fake roid and I was sore and knotted up very bad.