I've got this one batch someone gave me that's supposed to knock your socks off, but it does absolutely nothing for me (I have an extremely high tolerance).

Does just letting it sit in the bottle result in sediment or something?

See? I could barely type that...

But it's early.

...and dog hairy I use an entire dropper full to get even minimal effect.

I've done five droppers full in short succession (about an hour), and the effect has been absolutely zilch.

This was lab-quality stuff, too -- I mean, a batch that came from a real, above-board, certified lab, which was hoping to hear that it had knocked me on my ass. They were shocked to hear it did nothing. So, either my tolerance is off the scale, or this batch was, uh, homeopathic in strength. LOL