I've been dramatically relieved by NAC, n-acetyl cystiene. I've only been to one doctor who was aware of it - and this is somewhere between horrible and inexcusable. It's inexpensive and readily available online if your local health food store doesn't have it. Standard dose is one or two 600 mg caps per day. I've written more in other posts which you can look up here. I pray for all here who are needlessly suffering with this exhausting condition.