hi erica..
1.) masters cleanse: you can find it online.. my mom is a health counselor and i got it from her ( so its safe).. its just a cup of water.. and in the water is 2 teaspoons of lemon, 1 tablespoon of pure maple syrup, and a dash of cayenne pepper. you drink it 6 times a day. and you also drink a tea that make your go poo 2 times a day.
2.) multi-vitamin: there are liquid ones.. and you are probably right about having to take it with food.. a lot do say that.
3.) yes, we just put him on goats milk last week.. seems to be doing fine. not better not worse so far. are you doing it too??