Edexcel A level Biology : topic 1- 4: describe William Withering's drug test

Question

describe William Withering's drug test

seremi amune · Accepted Answer

potential substance identified but not as a single active ingredient
trial on small group of patients with the disease 
large group of patients trial also with the disease 
dosage refined and method of extraction improved 
general use

Edexcel A level Biology : topic 1- 4

Describe William Withering's drug test

Potential substance identified but not as a single active ingredient trial on small group of patients with the disease large group of patients trial also with the disease dosage refined and method of extraction improved general use

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