Cheapest Semaglutide prices: best $/mg after codes
Weight Loss / GLP-1 & MetabolicAlso known as: Sema
The original blockbuster GLP-1 (Ozempic/Wegovy).
📖 New to Semaglutide? Read the full guide →Cheapest Semaglutide right now
$19 at Ascension Peptides
Best value is $1.85/mg at RetaOne Labs. Best tested is Glacier Aminos at $2.92/mg (7/7 checks). Prices updated October 19, 2026.
Cheapest by size
sold as RO-1SM 20mg
after code peptidepub
sold as RO-1S 10mg
after code peptidepub
sold as GLA-1 SM 15MG
after code PEPTIDEPUB
sold as Semaglutide
after code peptidepub
sold as Semaglutide
after code peptidepub
sold as Semaglutide
after code peptidepub
sold as AP-SEM-1™
after code peptidepub
sold as GLP‑1 (SM) - 10MG
after code PEPTIDEPUB
sold as AP-SEM-1™
after code peptidepub
sold as Semaglutide
after code peptidepub
sold as Semaglutide
after code peptidepub
sold as AP-SEM-1™
after code peptidepub
sold as CAGRI/GLP1-S 5MG/5MG
after code peptidepub
| Vendor | Testing How grades work | Size | Price | $/unit | Deal |
|---|---|---|---|---|---|
RetaOne LabsBest value USAsold as RO-1SM 20mg | 6/7 tested | 20 mg | $37.05$39 after code peptidepub | $1.85/mg | |
Sparta Labs sold as GLP-1 (SG) | 0/7 tested | 30 mg | $76.50$90 after code peptidepub | $2.55/mg | |
RetaOne Labs USAsold as RO-1S 10mg | 6/7 tested | 10 mg | $27.55$29 after code peptidepub | $2.76/mg | |
Glacier AminosBest tested sold as GLA-1 SM 15MG | 7/7 tested | 15 mg | $43.73$48.59 after code PEPTIDEPUB | $2.92/mg | |
Sparta Labs sold as GLP-1 (SG) | 0/7 tested | 20 mg | $59.50$70 after code peptidepub | $2.98/mg | |
LabFirst Peptides sold as Semaglutide | 0/7 tested | 30 mg | $103.50$115 after code peptidepub | $3.45/mg | |
Puratek Peptides USAsold as PUR-1S | 7/7 tested | 10 mg | $34.95 | $3.50/mg | |
Ascension Peptides USAsold as S-5 | 6/7 tested | 5 mg | $19$38 after code PEPTIDEPUB | $3.80/mg | |
Sparta Labs sold as GLP-1 (SG) | 0/7 tested | 10 mg | $42.50$50 after code peptidepub | $4.25/mg | |
Reserve Research sold as Semaglutide | 0/7 tested | 10 mg | $45$50 after code peptidepub | $4.50/mg | |
LabFirst Peptides sold as Semaglutide | 0/7 tested | 20 mg | $99$110 after code peptidepub | $4.95/mg | |
American Peptides sold as AP-SEM-1™ | 0/7 tested | 50 mg | $270$300 after code peptidepub | $5.40/mg | |
Aero Peptides | Unrated | 10 mg | $59.49$69.99 after code PEPTIDEPUB | $5.95/mg | |
Valkyrie Peptides sold as GLP‑1 (SM) - 10MG | 4/7 tested | 10 mg | $63$70 after code PEPTIDEPUB | $6.30/mg | |
American Peptides sold as AP-SEM-1™ | 0/7 tested | 30 mg | $189$210 after code peptidepub | $6.30/mg | |
LabFirst Peptides sold as Semaglutide | 0/7 tested | 10 mg | $63$70 after code peptidepub | $6.30/mg | |
LabFirst Peptides sold as Semaglutide | 0/7 tested | 15 mg | $94.50$105 after code peptidepub | $6.30/mg | |
American Peptides sold as AP-SEM-1™ | 0/7 tested | 20 mg | $144$160 after code peptidepub | $7.20/mg | |
American Peptides sold as AP-SEM-1™ | 0/7 tested | 10 mg | $81$90 after code peptidepub | $8.10/mg | |
World Wide Peptides | 6/7 tested | 20 mg | $177.30$197 after code PEPTIDEPUB | $8.87/mg | |
Vyal Labs sold as GLP-1 | 0/7 tested | 10 mg | $107.10$119 after code peptidepub | $10.71/mg | |
Vyal Labs sold as GLP-1 | 0/7 tested | 5 mg | $71.10$79 after code peptidepub | $14.22/mg | |
World Wide Peptides | 6/7 tested | 5 mg | $81.90$91 after code PEPTIDEPUB | $16.38/mg | |
Certified-Pep sold as CAGRI/GLP1-S 5MG/5MG | 0/7 tested | 5 mg | $115.20$144 after code peptidepub | $23.04/mg |
Prices are for research materials sold for laboratory use only. PeptidePub may earn a commission from vendor links or codes at no cost to you. This does not affect testing grades or rankings. See our methodology. Best value is the lowest $/mg among vendors with verifiable published testing; Best tested is the vendor passing the most of our 7 testing checks.
Which size should I buy?
On this page the bigger vial is not cheaper per mg right now: the cheapest 5 mg option is $3.80/mg and the cheapest 50 mg option is $5.40/mg.
The saving only counts if you can use the vial within its storage window. This peptide's guide lists a reconstituted use-within window of OZEMPIC multidose pen: 56 days after first use; WEGOVY single-dose presentations are used once. See handling and storage.
Smaller vials cost more per mg but waste less if a vial sits open past its window. Filter to 5 mg and Filter to 50 mg.
Watch Semaglutide prices
Today's best is $1.85/mg. We'll email you when a tested vendor beats it, a discount code changes, or new lab results come in. No spam — only real changes.
Cheapest Semaglutide price FAQ
What's the cheapest Semaglutide?
The cheapest Semaglutide right now is $1.85/mg at RetaOne Labs for the 20 mg option, after code peptidepub.
How is Semaglutide price per mg calculated?
PeptidePub normalizes each vial by dividing the effective checkout price by the listed size in mg. That lets different vial sizes sit in one cheapest-first comparison.
Are discount codes included in these prices?
Yes. When a vendor has a confirmed code percent in the catalog, PeptidePub applies that discount before calculating effective price and effective price per unit. Codes without a confirmed percent are shown, but they are not used to lower the calculated price.
How often are prices updated?
The catalog is refreshed daily from vendor data sweeps, and the page reflects the current catalog values at build time. When vendor pricing or codes change, the comparison and cheapest-offer answer update from the same source data.
Which size should I buy?
On this page the bigger vial is not cheaper per mg right now: the cheapest 5 mg option is $3.80/mg and the cheapest 50 mg option is $5.40/mg. The saving only counts if you can use the vial within its storage window.
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