The Digestive Challenge: Why Oral Peptide Delivery Has Failed for Over a Century
By
odedfalik
Pure flour-power. Hearty enough to carry you through lunch.
Summary
The article explains the fundamental challenge of oral peptide delivery, focusing on how the human digestive system is designed to break down peptides and proteins. It describes the gastrointestinal tract as a 30-foot disassembly line where stomach acid denatures proteins, enzymes like pepsin and trypsin cleave them, and the intestinal mucus layer blocks absorption. The article highlights that for over a century, attempts to deliver therapeutic peptides orally have failed because the digestive system efficiently destroys peptide chains before they can reach the bloodstream, using semaglutide as a specific example of a peptide that faces this challenge.
Key quotes
· 5 pulledYour stomach's entire job is to destroy peptides. It's the whole point of your stomach.
Your GI tract is a 30-foot disassembly line for proteins. Acid denatures them, pepsin cleaves them, trypsin finishes the job.
Anything that looks like a chain of amino acids gets shredded into fragments before it can reach your bloodstream.
This is what's supposed to happen. It's how you digest food.
It's also the reason that for over a century, every attempt to deliver a therapeutic peptide by mouth has run into the same problem.
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