Have not posted here for long time but saw this thread linked in Paul's latest email. I was an acupuncturist/clinical herbalist for over 25 years and an herbal user/studier for many years before that. Also have had pneumonia and I know it is a beeeeatch! I long ago came to the decision that deep, bacterial infections are best treated w/ the big guns i.e. modern antibiotics. Viral infections- there are some specific ones that have good meds for but otherwise, herbs all the way. Actually a big part of making that decision about antibiotics was my pneumonia experience.
Must admit as a "side bar" that the codeine cough medicine was quite a revelation; I can easily see how junkies get hooked

Downside of course is that each dose is much less effective than the previous one. Not to mention expense and overall toll you your body. Oh well, still Mr Clean.
Elderberry has several studies behind it as an effective medicine for cold and flu virii.
Sadly, though excellent vs influenza virus, totally ineffective against colds. Can't remember off hand but one is a virus w/ a capsule, the other without, two different families of virus. Elderberry only works agains the one family but not the other.
Best you can do w/ the cultured foods is take as far away in time from the antibiotics as you can and eat lots of them. Continually putting in/replacing the good bacteria may speed healing and will definitely help prevent later back lash from the drugs.
Wish you a speedy and smooth recovery!