This is the 4th alternate pneu blend for lung support and it targets inner bronchioles congestion just like Pneu #3 does. The lung support blends are all a little different in the energy and nutrition that they supply and everybody is different so one remedy may not work for everyone. For more information about the herba Pnue blends plese read the description for Pneu #1.  679*HERBA PNEU IB, inner bronchioles congestion; 100 caps: West Indian lemongrass leaf, Irish moss fungus, Pfaffia root and 1 more.