Hi, Steve, interesting question you have and I see you want others to reply about mucolytics.
I have taken N-Acetyl-Cysteine for several years on advice of my natural doctor.. He did not say why, only that I NEEDED to take it.
I then read that it's used for chronic bronchitis which is COPD as well as many other potential ailments. COPD causes loads of mucous just like BX so the complaint is similar.
There are many articles on NAC as Ida suggests, but you'll find better results I think with the words spelled out. I researched it first after being referred to it and learned just what you are talking about - it's said to be a great antioxidant because it has something to do with supplying glutathione, a very important antioxidant, which is necessary in the body and is not so abundant with age. One of the best ways to get it is with NAC.
I have stopped taking it at least temporarily, as I didn't really feel different and I have to swallow so many capsules a day, but if I notice a thickening of my mucous or some other issue I'll probably get back on it. I was taking 600 mg twice a day for years and he told me I could take up to 3 a day so I did that recently but again, didn't notice any difference with my lungs. I experienced no side effects at all.
One time I was in the hospital ER and I heard a doctor say to another doctor - 'give him NAC to counteract the Tylenol'. I was very impressed because it's not really a drug. I remember reading it is a counter for a Tylenol overdose among many other things. It has many uses.
As a mucolytic, however, I take mucinex just the plain one not the one that has a decongestant in it as it raises the BP. I'm not at all sure I feel anything different there either but I seem to do well at bringing stuff up naturally. I think I learned long after I was taking the NAC that it also helped to thin mucous but my main reason for taking it was as an antioxidant because it sounded so important from that point of view then knowing it was also a mucolytic and what that meant (I might not have known if I'd read that word when I first started taking it what that meant) gave it even more importance.
One reason it's probably not talked about with BX is possibly because medical doctors may not prescribe it. They would prescribe a drug. But those who go to an Alternative Dr. might be taking it and just haven't mentioned it. I just remembered something - I was talking to a Pharmacist one day years back and he'd mentioned there is a pharmacy in California who makes a nebulizing treatment with NAC. I was very interested as I wanted something healthy and natural IN MY LUNGS to do some good. I asked my Pulmonary Dr. about it and he had no idea and no interest and I forget what he said but I got no help there But I'm sure I've heard more recently that NAC is used in that form..and could be by some medical doctors. Esp. if the hospital uses it.
NAC has been advertised in the past on TV and Radio shows as a great antioxidant to destroy free radicals and Alternative doctors may prescribe it for that reason and for specific problems that one may have, including getting rid of mucous.
I hope this answer was not too convoluted - it's late and my brain is tired.
Tabatha