works when more is used than indicated on label
I bought a pH meter from Amazon to measure the effect of these drops on the acidity of coffee.  My results indicate that to neutralize the acid in a typical coffee fan's 8 ounce cup of coffee, one needs 8 drops of this stuff rather than the 4 drops recommended on the product label.  For the technically minded, 8 drops raised the pH of my coffee from around 5.5 to around 7.  This works out to around 15 cents per cup -- not bad.  For those who want a cheap homebrew solution (no pun intended), 1/8 level teaspoon of baking soda will do the same.  At 89 cents per pound of baking soda, the supply may outlive your coffee habit. In any case be sure to stir the coffee + neutralizer before you drink.
Rating: 4 stars