Taste is fine for me
So far I do not notice any real taste problem.  I have been using 1/2 teaspoon in a quart of water though as there has been some stomach rumbling, etc. as a result of the magnesium.  The water does change taste a little after mixing it in, but I definitely would not say it is objectionable at all.  So I would recommend trying yourself and not worrying about the reviews saying it is undrinkable.  If you end up being one of the people very sensitive to the taste, you can discontinue of course.  But, don't deprive yourself of the chance to see if this will help as you may be someone like me who does not really notice any bad taste.
Rating: 4 stars