Hi Lenor
I use it twice daily .. liposomal glutathione sublingually. (must be refrigerated) which is a hassle when traveling but I make it work..... Before I travel I get an infusion with multiple vitamins, glutathione and a few other things mainly to boost immunity. My tendency to contract illness had decreased greatly since doing this and other supplementation. Not sure if it is these things or much prayer! But my condition as a whole has improved on CT and PFT as well.