The one thing I find that helps my lungs produce less gunge and therefore less infections is Queen Bee Manuka Honey 25+ strength I put a spoonful on my porridge. What led me to this I was watching a Yesterday appointment on TV about the civil war there they just packed wounds with a mix of honey and oats before sewing them up and the result no infection. Asked the doc about this and he recommended New Zealand Manuka Honey the type I wrote before. Yes it is an expensive number but I buy in bulk last time it cost me £16+ for 3 340g jars. So £48 plus p&p as against £48 + for some single jars. The main thing is that you have to stick at it not one and miss the next so far I think I am on a winner. Just one word of warning they use this in hospitals as dressings but please don't try that at home hospitals use a specially sterilized version of the stuff.