I stumbled on this post in researching this subject because I have just started taking massive doses in addition to lecithin. I believe this can work and already started noticing a help in my breathing. Lecithin contains choline which helps move fat. Vitamin A is a fat soluable vitamin and to function in the body is most likely going to need choline. So I think there is real promise here. I'll know more soon as I keep this up but I have had nasal polyps for years.
I have suffered with persistent nasal polyps for about 15 years; I developed an allergy to aspirin which is linked to the polyps and asthma. During this time I had the polyps surgically removed at least 7 times (that I can recall off the top of my head) only to have them grow back within 6-8 weeks. Needless to say I could not smell, had limited taste (thank God for Tabasco.... only thing that gave food flavor) and had at least 6 major sinus infections per year requiring extensive antibiotics.
Recently I started taking Lecithin (2 1200 MG softgel caps) and Ginko Biloba (2 120 MG Caps) along with my daily vitamins. After about 2 weeks of this I started to detect odors. Now, not having smelled for 15 years I had no idea what I was smelling, but the fact that I could smell SOMETHING was great. About another 2 weeks and I caould breathe easily through my nose and I could smell all sorts of things. I had forgotten the joys of smelling freshly brewed coffee, chocolate chip cookies baking, and my wife's perfume.
I believe the Lecithin is the major player in my success. Lecithin, from what I've learned about it, is an emulsifier; it dissolves things and keeps them suspended in another liquid. This allows you to get rid of the waste products in your system rather than letting them collect in your body. The Lecithin has also helped lower my cholesterol and improve my cardiac health in general.
Take this for what it's worth. It worked for me and it is a cheap and painless alternative to some of the other treatments I've seen. I would love to see a clinical study on this, but whose going to do that when there is no drug to be marketed once the study is complete.