Are Peptides Oral or Injectable? Understanding Administration Methods
                                
                                
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                                    5 min read                                
                            
                                Over 95% of therapeutic peptides have historically been administered via injection, largely because the delicate amino acid chains are easily destroyed by the digestive system. However, asking "are peptides oral or injectable?" reveals a complex landscape, as significant research and new formulations are enabling oral delivery for some peptides.