Why can't insulin be given orally to diabetic patients?

1. Human body will elicit strong immune response

2. It will be digested in Gastro-Intestinal (GI) tract

3. Because of structural variation

4. Its bioavailability will be increased

Doubtly Asked 30 Oct 2026 NEET UG 2025 Practice test neet Save WhatsApp Report

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Answer: 2. It will be digested in Gastro-Intestinal (GI) tract

Key idea: Insulin is a protein (peptide hormone).

If taken orally, it is digested by proteolytic enzymes in the gut and loses its activity, so it must be injected. Option 2.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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