http://guilfordmd.com/index.html

You should give Dr. Guilford a call and see where his thinking is on all this. I am sure he'll want to know your experience with GSH & CF. The more info he collects - the more we'll all benefit. I know he has a few CF patients who began GSh from a young age so he might share some of his observations. He has visited with Dr. Warwick at the MN CF clinic and I believe he has spoken to Dr. Bishop too - so he'll be familiar with what you are trying to do and the challenges of being a CF parent...

We use Theranaturals & Dr. Guilford's liposomal because it is convenient to have both. Before calling you might look at his web site above, gshnow.com , readisorb.com -- you'll find more info on GSh and GSH packed in liposomes (which affects the absorption)

You could also test GSH levels next time you do blood work - thay way you'll know where you are with whatever you are doing - or adjust somehow. Without GSH supplementation my child would surely be below the normal range, just like any other vitamin or antioxidant you want to be sure the body has what it needs...