William Withering found that the most effective mixture for treating Dropsy was tea made with dried powdered foxglove leaves. Why would boiling reduce the effectiveness of the drug? - 1, What was Withering's key contribution to modern-day methods of testing out new medicinal drugs? - 2, What were were the positive symptoms exhibited by patients during Withering's experiments? - 3, What is different about our drug-trial process today from Withering's methods? - 4,

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