This site cites this specific source directly as general background on lung diseases — distinct from its five ingredient-specific references, this one addresses diagnosed conditions.
Worth noting this is the one reference not tied to a specific botanical ingredient — it covers diagnosed lung conditions generally, directly supporting this site's own repeated "see a doctor instead" framing.
This site links to this source directly when discussing worrying breathing problems — worth checking it if you're uncertain whether your own symptoms warrant medical attention rather than a supplement.
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