WhichPeps

Semaglutide (oral)

GLP-1 receptor agonist peptide analogue

Also known as: Rybelsus· brand nameOral semaglutide· formulation name
Type 2 diabetessemaglutide also has we…
Generic peptide vial illustrationSemaglutide (oral)
Evidence levelLate-stage human
Human evidenceSubstantial
Regulatory statusAuthorised products exist

What you need to know in 20 seconds

What is it?GLP-1 receptor agonist peptide analogue
Research focusType 2 diabetes; semaglutide also has weight-management evidence in other authorised formulations.
Human evidenceOral semaglutide now has strong human evidence across obesity and cardiovascular outcomes. OASIS 4 found -13.6% mean weight change with oral semaglutide 25 mg versus -2.2% placebo at week 64, while SOUL showed fewer major cardiovascular events with oral semaglutide in high-risk type 2 diabetes.
Regulatory statusAuthorised oral semaglutide products now include Rybelsus for type 2 diabetes and oral Wegovy tablets for adult weight management in current U.S./EU records; exact indication, strength and jurisdiction must be stated.
Main limitationsEquivalence across oral formulations/strengths or use outside the authorised product, population and indication.
SafetyGI adverse effects; risks and contraindications are detailed in authorised product information.
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Oral semaglutide now has strong human evidence across obesity and cardiovascular outcomes. OASIS 4 found -13.6% mean weight change with oral semaglutide 25 mg versus -2.2% placebo at week 64, while SOUL showed fewer major cardiovascular events with oral semaglutide in high-risk type 2 diabetes.

What the evidence actually supports

  • Strong human efficacy evidence for the studied regimen; keep regulatory/product context explicit.
  • Keep oral Wegovy obesity evidence distinct from Rybelsus diabetes evidence on the same canonical oral-sem­aglutide page.
  • Strong second outcome that moves the oral-semaglutide page beyond weight/glycaemia alone.

What is not established / key limitations

  • ×GI adverse events were frequent; the 50 mg study regimen should not be confused with other oral semaglutide doses/indications.
  • ×This effect size cannot be transferred to lower-dose oral diabetes formulations.
  • ×SOUL used up to 14 mg oral semaglutide in T2D; it is not the same regimen/population as OASIS 4 obesity treatment.

Selected study & evidence records

OASIS 1 oral semaglutide 50 mg obesity trial

2023 · Randomized double-blind placebo-controlled trial · n=667

Estimated mean weight change was -15.1% versus -2.4% placebo; 85% versus 26% achieved at least 5% loss.

Study detail → Primary source ↗

Oral Semaglutide at a Dose of 25 mg in Adults with Overweight or Obesity

2025 · Randomized, double-blind, placebo-controlled trial · n=307

Mean weight change was -13.6% with oral semaglutide versus -2.2% placebo; multiple categorical weight-loss thresholds also favored semaglutide.

Study detail → Primary source ↗

Oral Semaglutide and Cardiovascular Outcomes in High-Risk Type 2 Diabetes

2025 · Randomized, double-blind, placebo-controlled event-driven superiority trial · n=9650

MACE occurred in 12.0% with oral semaglutide versus 13.8% placebo (HR 0.86, 95% CI 0.77-0.96; P=0.006).

Study detail → Primary source ↗

Safety and unknowns

GI adverse effects; risks and contraindications are detailed in authorised product information.

GI adverse effects were frequent (80% vs 46% placebo in OASIS 1); dose/formulation and authorised indication must be kept explicit.

Technical details

Mechanism / biologyGLP-1 receptor agonism increases glucose-dependent insulin secretion, reduces glucagon and slows gastric emptying/appetite signalling.
Route / formulation boundaryRybelsus, oral Wegovy and injectable semaglutide are not interchangeable formulations. Trial doses and currently labelled commercial tablet strengths must be kept separate.
Identity / data-quality noteUse the canonical compound identity and studied formulation when interpreting evidence.
Dosing evidence statusVerified dosing evidence added. UK licensed oral semaglutide dosing — current formulation example. See dosing_evidence records for route, regimen, population, duration and source.
Identifiers & alternate namesRybelsus · Oral semaglutide

Evidence rule: WhichPeps keeps human, animal, laboratory, regulatory and product/formulation evidence distinct. Common names help people find the page; they do not change the underlying scientific identity.