Xena, >>> If I stop taking supplements for 6-8 hours I lose functional response...If I don't take enough NAC I feel it immediately. <<<
That's because without food, your body is using the cysteine amino acid in NAC as a main (only) food source, since there are no other nutrients coming in. It's basically like long term fasting, and you start burning fat, producing ketones, which can taste and smell real bad. Your saliva is probably full of ketones, which is what you taste when you try to eat something.
That sounds like what could be happening. If so, the solution would be to eat whatever types of food you can handle (or maybe in smoothie form?) which will get you out of ketosis, which will remove the bad taste (ketones), and thus enable you to eat all types of food again.
Sounds logical anyway. I would try eating something starchy first, simple carbs, which will quickly provide the glucose needed and get you out of ketosis. Once out of ketosis, the bad ketone taste fades, and you're back in business. Worth a try anyway, but bottom line is that to live, you obviously have to be able to eat.
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