Hi Shelley, Ms L and others,
This is interesting to me as i have been medically prescribed a supplement containing NAC as anti-oxidants for treatment of impaired liver function with symptoms of chemical sensitivities. I also was diagnosed with pre-diabetes (which also leads to liver damage).

I was told, as an aside at the time, (5 years ago) that a compromised liver is associated with hot 'flushes' (I'm from Oz) and actually found that whilst taking the supplement the frequency and duration of flushes improved.

I then deducted that any liver stress was linked to flushes and I found I could predictably cause flushes by having (my)stressor foods - sugars /dairy products especially. NAC is beneficial to the liver and as the liver detoxes excesses of all manner - including hormones - you may have actually needed more! (And maybe need to address emotional reactions too?)

Glutathione is manufactured in the body according to need, and so needs appropriate nutrient to be available too. PS I am still taking the supplement but only at 30% prescribed level as it is too expensive for me even though I ship it more cheaply from US.

Re the allergy query it makes sense too, to involve NAC/glutathione as the liver is working hard at detoxing these conditions also. Help the liver further by avoiding sugar and HFCS products as current research is showing the fructose in these is causing fatty liver and more AND interesting again Vit C is able to moderate this effect!

Hope this is useful to you all.