you have to check around,some stores carry it for canning season.

If you google the phrase pickling lime a number of online sources come up. I was unable to locate in a grocery store so I bought mine online.

Here is one source:
http://mrswages.stores.yahoo.net/mrswagpiclim.html.

Once you get it, take a tablespoon of it and mix it with a gallon of distilled water. Then put a tablespoon or more if you feel you need it, of that "lime water" mixture in everything you drink throughout the day.

God Bless,

Evan