For research use only. Not for human consumption. Not medical advice — consult a licensed clinician.

GLP-1 / Metabolic

Semaglutide

Also known as: Semaglutide (GLP-1 agonist)

Semaglutide is a GLP-1 receptor agonist used for type 2 diabetes management and chronic weight management. It mimics the incretin hormone GLP-1 to regulate appetite and glucose metabolism.

Where to buy · live market data

Who's worth your money for Semaglutide

Every current seller, ranked by independent evidence — Merit Score, latest COA purity, and live $/mg (size-normalized). Prices refresh daily. Rankings are never paid.

Top Merit pick

Highest Merit Score (99) of 16 scored sellers

$4.88/mg

$976 · 200mg · 99.9% purity

Best value

Lowest $/mg among scored sellers

$1.00/mg

$10.00 · 10mg

no COAs yet

Most tested

12 independent COAs on file

$6.50/mg

$130 · 20mg · 99.3% purity

Average price

$6.88/mg

Sellers

26

45-day trend

+3.4%

23 of 26 sellers have a current price· 5 stale hidden· 2 unverified hidden

Prices observed from public storefronts (last 24h), normalized to $/mg. "Evidence" is Merit's 0–100 Merit Score, derived only from observable verification evidence (methodology on /about); "Purity" is the latest independent COA. Some buy links are affiliate links — Merit may earn a commission at no extra cost to you, and where a vendor offers one, the code shown gets you a discount at their checkout. Affiliate status never affects price data, ranking, or the Merit Score (full policy on /disclosure). Research use only.

Watch Semaglutide

Get one email when the market actually moves — no newsletter, no noise.

Compound reference

About Semaglutide

CAS

910463-68-2

Molecular formula

C187H291N45O59

Typical dose range

0.25–2.4 mg (250–2400 mcg) subcutaneous once weekly; typically titrated from 0.25 mg/week, increasing every 4 weeks

Half-life

~7 days

Independent evidence

COAs for Semaglutide

195 third-party tests across 30 vendors. Each card links to the full report.

All 195 COAs for Semaglutide →
Measured purity 99.0%–100.0% across 120 COAs
Measured purity over time
Aggregated · 3rd-party listing
99.95 %
Aug 2026
Freedom Diagnostics Moderate

For

Semaglutide

by VoriLabs· batch SEMA_2608-A

Aggregated · 3rd-party listing
99.84 %
Aug 2026
ILS Labs Strong

For

Semaglutide

by Velora Biolabs· batch VBL-SM20-1

Aggregated · 3rd-party listing
99.85 %
Aug 2026
Freedom Diagnostics Moderate

For

Semaglutide

by Peptide Plugs· batch 189-02-DK

Aggregated · 3rd-party listing
99.90 %
Jul 2026
Krause Analytical

For

Semaglutide

by VoriLabs· batch VoriLabs SEMA-2607-C

Aggregated · 3rd-party listing
99.90 %
Jul 2026
Krause Analytical

For

Semaglutide

by VoriLabs· batch VoriLabs SEMA-2607-B

✓ Vendor-published
99.74 %
Jul 2026
Janoshik Analytical Limited

For

Semaglutide

by EZ Peptides· batch EZP-1P1007112026-04

COA on file
Aggregated · 3rd-party listing
99.77 %
Jul 2026
Freedom Diagnostics Moderate

For

Semaglutide

by Synthesis Peptides· batch 1G10826

Aggregated · 3rd-party listing
99.76 %
Jul 2026
ILS Labs Strong

For

Semaglutide

by Hydro Research Peptides· batch HR-2026-7341

Aggregated · 3rd-party listing
99.95 %
Jul 2026
Janoshik Analytical Limited

For

Semaglutide

by Longeva· batch B-2026-SEMA-5-001

✓ Vendor-published
99.94 %
Jun 2026
TrustPointe Analytics Moderate

For

Semaglutide

by Peptide Partners· batch SPL-4149

COA on file
Aggregated · 3rd-party listing
99.07 %
Jun 2026
ILS Labs Strong

For

Semaglutide

by Peptide Plugs· batch 125-01-SM

Aggregated · 3rd-party listing
99.90 %
Jun 2026
Prime Analytical Laboratories, LLC

For

Semaglutide

by Soma Peptides· batch SEV052657

Aggregated · 3rd-party listing
99.80 %
May 2026
Vanguard Laboratory Strong

For

Semaglutide

by Certified Peptides· batch 260518SG53

Aggregated · 3rd-party listing
99.75 %
May 2026
Janoshik Analytical Limited

For

Semaglutide

by EZ Peptides· batch EZP-1P1005102026-03

✓ Vendor-published
99.63 %
May 2026
Janoshik Analytical Limited

For

Semaglutide

by EZ Peptides· batch EZP-1P1005102026-03

COA on file
Aggregated · 3rd-party listing
99.91 %
May 2026
Freedom Diagnostics Moderate

For

Semaglutide

by Blank Peptides· batch GS10-052026-4

Aggregated · 3rd-party listing
99.23 %
May 2026
Horizon Analytical

For

Semaglutide

by Pepsgpt· batch P-2885342-P

Aggregated · 3rd-party listing
99.86 %
Apr 2026
Janoshik Analytical Limited · HPLC

For

Semaglutide

by Prime Peptides· batch 3022026SM

Aggregated · 3rd-party listing
99.75 %
Apr 2026
Janoshik Analytical Limited · HPLC

For

Semaglutide

by Prime Peptides· batch 3142026SM

Aggregated · 3rd-party listing
99.17 %
Apr 2026
Janoshik Analytical Limited · HPLC

For

Semaglutide

by Prime Peptides· batch 2242026SM

✓ Vendor-published
99.96 %
Apr 2026
Kovera Labs

For

ION-1S

by Ion Peptide· batch ION1S20-04172026

COA on file
Aggregated · 3rd-party listing
99.70 %
Apr 2026
BTLabs Moderate

For

Semaglutide

by Vertex Labs· batch SM0000038

Aggregated · 3rd-party listing
99.00 %
Apr 2026
Ethos Analytics Strong · HPLC

For

Semaglutide

by OROS Research· batch OR-LPGLPS10-426-B3

Aggregated · 3rd-party listing
99.68 %
Apr 2026
Janoshik Analytical Limited · HPLC

For

Semaglutide

by Prime Peptides· batch 3272026SM

Research depth

23 citations indexed for Semaglutide

All research on Semaglutide →

Study · 2026

EASL-EASD-EASO Guidance for the Use of Resmetirom and Semaglutide as MASH-Targeted Therapy

Adults with metabolic dysfunction-associated steatotic liver disease (MASLD) and steatohepatitis (MASH) are at risk for cardiometabolic complications and major adverse liver-related outcomes (MALO), including cirrhosis, cancer, and liver transplantation.

cohort · 2026

Weight-Loss Outcomes After Sleeve Gastrectomy Versus Tirzepatide in a Minority Cohort With Severe Obesity: Results From a Propensity Score Matched Cohort

While GLP-1 and GIP receptor agonists like semaglutide and tirzepatide have revolutionized pharmacologic obesity treatment, metabolic and bariatric surgery (MBS) continues to demonstrate superior weight loss and cost-effectiveness.

Study · 2026

The Conventional Cost-Effectiveness and Distributional Cost-Effectiveness of Semaglutide for Obesity Treatment

Objective This study aimed to evaluate the conventional and distributional cost-effectiveness of semaglutide, laparoscopic sleeve gastrectomy (LSG), and a "do nothing" option in Black and White racial subgroups.

Study · 2026

The impact of semaglutide initiated six months after laparoscopic sleeve gastrectomy on long-term weight loss and metabolic outcomes: single-center preliminary study

Background Although laparoscopic sleeve gastrectomy (LSG) is an effective treatment for severe obesity, some patients experience suboptimal weight loss or an early weight-loss plateau during postoperative follow-up.

Study · 2026

Combined Semaglutide and Sodium-Glucose Cotransporter-2 Inhibitor Use and Metabolic Outcomes in Chinese Adults With Diabetes: Post Hoc Analysis

Introduction Real-world use of once-weekly semaglutide in adults with type 2 diabetes in China has been shown in SCHOLAR.

Study · 2026

Early Adoption and Diffusion of Oral Semaglutide in US Adults With Obesity