Section 5 in The Prevention Of Adulteration Of Food, Drugs And Cosmetics (West Bengal Amendment) Act, 1973. [Entire Act]
When any drug or cosmetic is seized from any person in the reasonable belief that such drug or cosmetic is misbranded or adulterated, the burden ... proving that such drug or cosmetic is not misbranded or adulterated shall be on the person from whose possession such drug or cosmetic was seized