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Why does the comparison table include anti-histamines amongst the anti-muscarinics? There is no comparison being done. Did the author mean to compare the different antimuscarinics? I don't want to remove the anti-histamines without knowing why they are included since someone might think that Diphenhydramine is an antimuscarinic. —Preceding unsigned comment added by 188.8.131.52 (talk) 13:00, 8 April 2010 (UTC)