This site states this specific figure directly in its quick-facts table: 0 Stimulants.
This site describes it directly as caffeine-free botanicals — worth reading this as a specific absence claim about stimulant compounds, distinct from the separate "naturally derived" and "no artificial decongestants" claims made elsewhere on the site.
This site is separately direct that this is a gradual, stimulant-free botanical formula, not an instant decongestant — worth reading both statements together as this site's consistent position on what kind of effect to expect.
Backed by a 60-day money-back guarantee.
See The Current BreathiZen Offer