One thing I haven't seen mentioned here — do you know where your numbers were before you started the TUDCA? If your liver enzymes were already in a normal range going in, there isn't much for it to 'fix' on paper. And labs vary a bit too, so results from a different lab can bounce around. Same lab, same conditions, before and after — that's the only comparison that really tells you anything. Without that, 'barely different' doesn't actually say the TUDCA did nothing.