Why is it advisable not to give insulin orally?

Insulin is a protein hormone that is broken down by digestive enzymes in the stomach and intestines if taken orally. This means that if insulin is taken orally, it would not be effective in lowering blood sugar levels as it would be destroyed before it could be absorbed into the bloodstream.

Additionally, insulin taken orally would also have unpredictable absorption rates, making it difficult to control blood sugar levels effectively. This is why insulin is typically administered through injection or an insulin pump to ensure proper absorption and effectiveness.

Insulin is a protein hormone that regulates blood sugar levels. When taken orally, insulin is broken down by the stomach's digestive enzymes and rendered ineffective. This is why insulin must be given by injection.