Thanks JAB and others, Last spring I was recovering from near-pneumonia, pseudomonas and MRSA and was put on Tobramycin via IV by my family doctor. The Tobramycin was slowly working. Then in addition I started using the nebulizer 3 - 4 times a day and noticed a daily improvement above what the Tobramycin was doing. Inadvertently proved it by forgetting to use the nebulizer for a couple of days, -- I felt worse. Back on the nebulizer, again felt daily improvement as before. I am convinced that use of CS in the nebulizer accelerated the action of the IV. And since becoming clear I have continued a teaspoon of CS per day and have had a strong feeling of wellbeing, feeling GOOD every day. At 88 I am very thankful. And thank y'all for the interesting references and comments. Sincerely, Bill