Weight regain now has a timetable — and a Nature mouse study tests the limits of semaglutide enthusiasm
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Study wrapper · #1158

Electrospun Nanofiber Oral Thin Film Platform for Sublingual Peptide Delivery: A Promising Alternative to Conventional Semaglutide Formulations.

Sagar G, Stránská V, Stránská D, et al. Diabetes, obesity & metabolism. 2026.
SupportedAnimal (in vivo)Mentions: Semaglutide

Editor's note

Delivery, not efficacy, is the story here: an electrospun nanofiber film that carries semaglutide across the sublingual mucosa, sidestepping both the needle and the finicky absorption of the current oral tablet. In minipigs, the film edged out the Rybelsus-style dosing on weight-gain attenuation and biomarker response. It is a 40-animal, 8-week study in non-obese pigs, so this is a materials-science proof of concept rather than a clinical result — but a plausible route worth tracking given how much of the GLP-1 conversation now revolves around formulation.

Plain-language abstract

This animal study tested a dissolvable under-the-tongue film as a new way to deliver semaglutide without needles or tablets. In 40 minipigs dosed over 8 weeks, the film slowed weight gain by about 25% versus placebo — outperforming the oral tablet version — and improved insulin-related blood markers. It is early-stage work in animals, so human data would be needed before drawing conclusions for people.