What these products are
"Lung cleanse" and "lung detox" formulas — mullein, NAC, herbal blends — sold to smokers, quitters, vapers and the chronically coughing. The educational base: the Respiratory hub and chronic cough's decision tree.
What they cannot do
- Cleanse lungs. The mucociliary escalator does that continuously; no supplement accelerates it, and quitting smoking regrows it within weeks to months — the actual "detox," free.
- Treat a chronic cough — a symptom with a famous cause list (drip, asthma, reflux, ACE inhibitors) that diagnosis sorts and a capsule delays.
- Undo smoking while smoking continues — the framing several products in this category quietly sell.
The evidence, in one table
| Ingredient / claim | Evidence | Honest role |
|---|---|---|
| Quitting smoking | The benchmark | Risk falls on a published timeline; the only intervention that matters at scale |
| NAC (600–1,200 mg) | Limited | Mucolytic pedigree; modest COPD-exacerbation data in trials — a medical conversation, not a cleanse |
| Mullein, lungwort, herbal blends | Insufficient | Tradition without trials |
| "Lung detox" kits | None | The escalator's existence, monetized against |
| Honey (night cough, short-term) | Limited | Beats OTC syrups in trials; never under age one |
What our reviews check
Detox framing (disqualifying), smoker-targeted absolution marketing, red-flag acknowledgment (blood, weight loss, breathlessness — imaging territory), NAC doses against the studied ones, and seller terms as verified. Reviewed products appear below; review pages carry disclosed affiliate links — this page carries none.