Tag: Oral insulin

Globally, an estimated 537 million adults are living with diabetes, with 150 to 200 million depending on insulin therapy [1.6.2, 1.6.4]. A common question is, 'Why is insulin only given by injection and not as an oral drug?' The answer lies in its molecular structure.

For over a century since its discovery, insulin therapy has required injections to be effective. This necessity stems from insulin's delicate protein nature, which cannot survive the harsh and destructive conditions of the human digestive system, explaining why can insulin only be injected.