Eric, I don't have any of the information that you are asking for, but
can attest to my own quirky system.  I've found that the amount of
discomfort depends upon the other things I eat with the lactose and,
frankly, the time of the month.  Sometimes an "accident" like yours was
a disaster and other times it was a surprise.   
By the way, I tried Lactogen at the beginning of the summer and am much,
much better able to tolerate lactose than before I started their
regimen.  I was doubtful about spending the money and it hasn't solved
all of my lactose problems, but have to say that I am very happy with
it.  No, I'm not related to the owner of the company, nor do I work for
them.  
Katherine.  

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