Short answer: A genuinely trustworthy lung support supplement discloses medication interaction cautions clearly and avoids implying it's a substitute for asthma or COPD treatment.
What to check when evaluating any lung support supplement
Whether the marketing avoids disease-treatment claims for asthma or COPD, and whether the delivery format (spray vs. capsule) is clearly explained with its own specific instructions.
Why this category requires directing diagnosed conditions elsewhere
They are not a treatment for asthma, COPD, heart disease or any medical condition — for those, see a doctor, a direct, honest boundary.
⚠️ Worth knowing: speak with your doctor about any diagnosed respiratory or cardiovascular condition before relying on a general wellness supplement.