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SDSue: I am sorry for your bad experience.
It seems like glutathione is a complicated subject in general.
I am not sure to have read many positive experiences with glutathione in this forum, but maybe I haven't read enough. Most people seem to have had symptoms of methylation-block or other side effects.
Also not all doctors are very enthusiast with supplementing glutathione directly, especially orally.
I was listening to a conference with Dr Ben Lynch and he was saying the people with lots of "cellular damage", such as high oxidative stress, will get little to no benefit with direct supplementation.
Also dosage seems to be important as it would cause "feedback inhibition", which to me sounds like another way to say methylation block.
Personally I have to say oral glutathione is helping... and against almost all I've read it's one of the few supplements that lifts me up a bit as soon as I take it
I am just using "Reduced glutathione" (Jarrow)... the one that, according to some docs, it is supposed to be very poorly absorbed etc... etc...
Well... at the moment it's working... taking 2 pills/day. Go figure.
Also I have to say that if you go and check people's comments on large websites such as Amazon or iHerb the majority is saying that it works very well for them.
Maybe Lynch is right, it has to do with the overall state of the cells and if they can absorb it or not.
Final thought I also have a bottle of Acetyl-glutathione, but haven't tried it yet. It seems to be much more absorbable.
http://www.nleducation.co.uk/resources/reviews/oral-glutathione-equivalent-to-iv-therapy/