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Oral (Capsules/Liquid): Generally considered most effective for gastrointestinal issues (gastritis, IBS) as it directly contacts the gut lining

S., Burton, E

This review article summarizes the physiological barriers to oral delivery of peptides and proteins and provides an insight into novel pharmaceutical approaches to improve oral bioavailability of therapeutic proteins

Protect vials from light by storing in their original packaging or wrapping in foil
