Mullein (Verbascum thapsus) and ginger (Zingiber officinale) are two of the most commonly used botanicals in the respiratory support supplement category. They are also the two ingredients in Breathizen’s formula with the longest history of traditional use.
Mullein has been used in European and Ayurvedic traditional medicine for centuries, primarily for respiratory comfort. The leaves and flowers contain saponins and mucilage, which are thought to soothe the respiratory tract. Most evidence comes from traditional-use literature rather than large-scale clinical trials.
Breathizen uses a 10:1 extract, meaning 10 parts raw herb are concentrated into 1 part extract. Traditional-use dose references for mullein tinctures are typically 1–4 mL.
Ginger has 109 randomized controlled trials across various health applications. The strongest evidence is for nausea (at gram-level doses). For respiratory applications, ginger is studied for its anti-inflammatory properties, but typically at doses starting at 250 mg of raw equivalent or higher.
A key detail: the brand’s own press release concedes that a relevant ginger trial used “a measured gram-level dose.” Breathizen’s entire blend is 154 mg across five ingredients, so the ginger portion cannot approach this threshold.
Both mullein and ginger are well-precedented, independently researched ingredients. The question for Breathizen is not whether these ingredients have merit, but whether the doses within a 154 mg shared blend are sufficient to deliver the effects seen in research.