My Humaworm instructions said to take 3 pills 2x a day? That's what I've been doing. I make sure to take them on an empty stomach. I believe that consistency might be the key so that the Humaworm herbs build up in your system. That's what I have gathered at least from reading other posts.
Yes, the epsom salts are just the normal run of the mill kind you can find at any pharmacy or drug store. I get mine at Safeway, it's usually in the over-the-counter medicine aisle.