Question

why insulin is injected not taken orally

Answer 1

The hormone insulin is made up of proteins that if taken by mouth is denatured by the digestive process. This would inactivate the insulin.

Therefore, when the body can't make insulin, it can't be taken in pill form and at this time must be injected.

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Answer 2

Hey mate, here's your answer^^_^

Insulin is injected not taken orally because if We take it through mouth then our digestive juices in stomach will break down that medicine and that medicine is not able to do it job in blood stream.

Hope it'll help you✌️✌️