Breathizen lists five ingredients in a 154 mg proprietary blend. Here is what each one is, what it is studied for, and what the research actually shows.
A traditional Ayurvedic and European botanical widely used for respiratory comfort. The 10:1 concentration ratio means 10 parts raw herb are concentrated into 1 part extract. Traditional-use dose references for mullein tinctures are 1–4 mL.
One of the most researched herbs available, with 109 randomized controlled trials. The strongest evidence is for nausea at gram-level doses. Anti-inflammatory and respiratory applications exist but at doses typically starting at 250 mg of raw equivalent or higher.
A pineapple-derived enzyme complex studied for supporting normal mucus balance and respiratory comfort. Studied doses typically range from 500–1,000 mg daily.
A citrus extract providing vitamin C. The NIH Office of Dietary Supplements notes vitamin C’s role in immune function and antioxidant support.
A functional mushroom (note: militaris, not sinensis — these are different species). Five human studies with 321 total participants (2017–2024) have examined its effects on oxygen utilization. Results are limited and inconsistent.