Analysis of information sources in references of the Wikipedia article "Ipratropium bromide" in English language version.
... India, smoking the herb stramonium (an anticholinergic agent related to ipratropium and tiotropium currently used in inhalers) was used to relax the lungs.
... India, smoking the herb stramonium (an anticholinergic agent related to ipratropium and tiotropium currently used in inhalers) was used to relax the lungs.
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