Description
Our GLP-1 S 20mg vial holds 20mg of lyophilized GLP-1 S (semaglutide), a GLP-1 receptor agonist. It’s for in-vitro and lab research only.
About GLP-1 S (semaglutide)
Semaglutide is a GLP-1 receptor agonist developed by Novo Nordisk. A fatty acid chain lets it bind albumin, which gives it a half-life of about a week.
It’s approved as Ozempic and Rybelsus for type 2 diabetes and as Wegovy for weight management.
GLP-1 S mechanism of action
GLP-1 is a gut hormone released after a meal. It tells the pancreas to release insulin, but only when blood sugar is high, and it slows how fast the stomach empties. Receptors in the hypothalamus pick it up too, which is where its effect on appetite comes from.
Natural GLP-1 is broken down by the enzyme DPP-4 within a couple of minutes. Semaglutide swaps one amino acid to resist DPP-4 and carries a fatty acid that binds albumin in the blood. Together those changes stretch its half-life to about a week, which is why it’s studied as a once-weekly compound.
GLP-1 S 20mg product details
- Compound: GLP-1 S (semaglutide)
- CAS number: 910463-68-2
- Molecular formula: C187H291N45O59
- Molar mass: 4,113.6 g/mol
- Structure: 31 amino acids with a C18 fatty diacid side chain
- Amount: 20mg per vial
- Form: lyophilized (freeze-dried) powder
- SKU: EVP-GLP1S-20
- Use: laboratory research only
GLP-1 S research
The STEP 1 trial (New England Journal of Medicine, 2021) reported average weight loss of about 15% over 68 weeks.
The SELECT trial reported fewer major cardiovascular events.
To read the papers yourself, start with this PubMed search for semaglutide.
Reconstituting GLP-1 S 20mg
The volume of water you add sets the concentration. For a vial holding 20mg:
- 1ml of bacteriostatic water gives 20mg/ml
- 2ml of bacteriostatic water gives 10mg/ml
- 3ml of bacteriostatic water gives 6.67mg/ml
Go with whichever number is easiest to work with in your protocol, and label the vial with the concentration and the date you mixed it.
Bacteriostatic water is the standard choice. Add it slowly so it runs down the side of the vial, then swirl or roll until everything dissolves. Shaking can damage the peptide, so skip it.
Storage and shelf life
Store sealed vials in the fridge (2 to 8°C) or freezer (-20°C), away from light. Mixed solution goes back in the fridge and should be used within about 28 days.
GLP-1 S purity and lab testing
Scroll through the GLP-1 S 20mg photos and you’ll find:
- A certificate of analysis with identity, measured quantity and HPLC purity.
- An independent Janoshik Analytical test report. You can verify it on janoshik.com with the key printed at the bottom.
Click any image to zoom in on the numbers. Some of these reports were run on a different vial size of GLP-1 S from the same production. The purity figure carries over; the quantity line refers to the vial that was tested.
Other GLP-1 S sizes
- GLP-1 S 2mg: 2mg for $39.90, about $19.95 per mg
- GLP-1 S 5mg: 5mg for $69.90, about $13.98 per mg
- GLP-1 S 10mg: 10mg for $129.90, about $12.99 per mg
- GLP-1 S 15mg: 15mg for $155.00, about $10.33 per mg
- GLP-1 S 20mg (this page): 20mg for $199.90, about $10.00 per mg
- GLP-1 S 25mg: 25mg for $239.90, about $9.60 per mg
GLP-1 S 20mg sits in the middle of the range: more material than the small vial without the upfront cost of the largest.
Related research peptides
- GLP-2 TZ 5mg, GIP/GLP-1 agonist
- GLP-3 RT 60mg, triple agonist
- Cagrilintide 5mg, amylin analog
- MOTS-c 10mg, mitochondrial peptide
- AOD-9604 10mg, hGH fragment
Browse the full GLP-1 peptides and weight loss peptides range, or see every vial on our research peptides page.
GLP-1 S 20mg questions
How much is in the GLP-1 S 20mg vial?
20mg of lyophilized powder. The amount is printed on the label.
Is GLP-1 S the same as semaglutide?
Yes. GLP-1 S is our product name for semaglutide research material, and the lab reports in the photos identify it as semaglutide.
Which size should I buy?
Pick by how much you’ll use. Bigger vials cost less per milligram, smaller ones mean less sits open in the fridge. The size comparison above lists every GLP-1 S option.
Is GLP-1 S 20mg lab tested?
Yes. The lab reports are in the product photos, so you can check purity before you order.
What do I mix GLP-1 S 20mg with?
Sterile bacteriostatic water. The reconstitution section above shows the concentration for each volume.
Buy GLP-1 S 20mg from Evolve Peptides
Ready to order? GLP-1 S 20mg costs $199.90 and is in stock. Add it to your cart and you’re done. Add a vial of bacteriostatic water if you don’t have any, so you’re ready to reconstitute when it arrives.
Need more for the same project? See the rest of our GLP-1 peptides and weight loss peptides.
For laboratory research use only. Not for human or veterinary use. Not evaluated by the FDA.
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