Hi Caontm

Yes, I just started...it wasn't easy to obtain!! Firstly, I think the saline solution is vital and I have done well with that...many comments that it will keep you well. I use it right after any big gathering or crowded get together. I shoot for twice daily.
So my glutathione is 200 mg per 1 ml. So far I found it gives me a heavy chest (related to asthma??) My asthma is nearly non existent...never had an attack just the heavy chest.. rarely. So I cut back to .5ml once daily and no problem with that...maybe you have to work up to the higher dose but I will continue to do this for a while. I hope this helps!!