Toxins can be alkaline as well. Take for example hydroxides such as magnesium hydroxide, which burns the intestinal wall, or ammonium hydroxide, which is highly toxic to the brain.
LMAO~ really HV are these substances found in toxic amounts in the standard American diet or in our air and water??? This is the kind of disinformation you are famous for on this subject! You are a danger to people in need!
You said "toxins", nothing about sources.
But since you ask magnesium oxide is the most common magnesium used in supplements and is also used as a laxative (Milk of Magnesia). Ammonia is produced by the body and can rise to dangerous or even deadly levels with some disorders.
OK, your turn. Where is your evidence that the toxins in our water, air and diet are all acid forming?