This site's own FAQ addresses this directly: produced in a GMP-certified US facility using naturally derived botanicals in a stimulant-free spray, but anyone on blood thinners, respiratory medication or other prescriptions should show the label to a doctor first.
Worth reading this FAQ answer as pairing two distinct things — a manufacturing-quality claim and a specific medical caution — in one answer, rather than separating safety into purely a quality question.
Show this site's own label section to your doctor specifically if you take blood thinners, respiratory medication, or any other prescription, and avoid use entirely if under 18, pregnant or nursing.
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