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Drugs which are proteins such as insulin cannot be taken by mouth but must be injected. Why?

Drugs which are proteins such as insulin cannot be taken by mouth but must be injected. Why?

Grade:Upto college level

1 Answers

Gaurav
askIITians Faculty 164 Points
8 years ago
If drugs which are protein like insulin are taken orally, they would get digested in our digestive system and broken down into amino acids, before they reach to the blood. So they need to be directly injected into the blood

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