Disclosure: We earn a commission from vendors on this page. Rankings are based on objective criteria including price, COA availability, and reputation.

Best Retatrutide Vendors of 2026

Ranked by Price, Purity, and Reputation

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Quick Comparison

1Nura PeptidePREMIUMCOA

10/10

$6.50/mg

2Ion PeptideCOA

9.8/10

$5.85/mg

3Ascension PeptidesCOA

9.5/10

$12.50/mg

4Glacier AminosCOA

9.3/10

$6.20/mg

5EZ PeptidesCOA

9/10

$7.80/mg

Rank	Vendor	COA	Score	Doses
1	Nura PeptidePREMIUM	Yes	10/10	10mg$65.00$6.50/mgView →30mg$180.00$6.00/mgView →
2	Ion Peptide	Yes	9.8/10	5mg$39.00$7.80/mgView →7mg$49.00$7.00/mgView →10mg$58.50$5.85/mgView →20mg$99.95$5.00/mgView →30mg$139.00$4.63/mgView →50mg$189.00$3.78/mgView →
3	Ascension Peptides	Yes	9.5/10	10mg$125.00$12.50/mgView →30mg$250.00$8.33/mgView →
4	Glacier Aminos	Yes	9.3/10	10mg$61.99$6.20/mgView →20mg$110.99$5.55/mgView →30mg$149.99$5.00/mgView →50mg$213.99$4.28/mgView →60mg$248.99$4.15/mgView →
5	EZ Peptides	Yes	9/10	6mg$48.00$8.00/mgView →10mg$78.00$7.80/mgView →12mg$82.00$6.83/mgView →20mg$108.00$5.40/mgView →24mg$118.00$4.92/mgView →48mg$208.00$4.33/mgView →

Bulk Pricing

Per-vendor quantity breaks — pick a vial size to see the bulk price. Must purchase the full pack.

Ion PeptideCOA15% code thepeptidecatalog

as low as $2.41/mg

$1417.5050mg × 10$2.83/mg → $2.41/mg with code

View at Ion Peptide

Glacier AminosCOA10% code thepeptidecatalog

as low as $2.61/mg

$2240.9060mg × 10$3.73/mg → $3.36/mg with code

View at Glacier Aminos

EZ PeptidesCOA10% code thepeptidecatalog

as low as $2.77/mg

$738.0024mg × 10$3.08/mg → $2.77/mg with code

View at EZ Peptides

Ascension PeptidesCOA

as low as $3.75/mg

$2250.0030mg × 10$7.50/mg → $3.75/mg auto-applied

View at Ascension Peptides

Nura PeptideCOA25% code thepeptidecatalog

as low as $4.05/mg

$1620.0030mg × 10$5.40/mg → $4.05/mg with code

View at Nura Peptide

Retatrutide Stacks & Blends

Pre-mixed combinations containing Retatrutide — one vial, multiple peptides.

Retatrutide + Cagrilintide Blend

Also contains: Cagrilintide

Full comparison →

1Nura PeptidePREMIUM

10/10

$105.0012.5mg/2.5mgCOA

25% OFF—thepeptidecatalog

2EZ Peptides

9.9/10

$118.0012.5mg/2.5mgCOA

10% OFF—thepeptidecatalog

3Glacier Aminos

9.8/10

$129.9920mg/4mgCOA

10% OFF—thepeptidecatalog

Compare More Peptide Vendors

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How We Score Vendors

Our scoring is based on three weighted factors:

Price Competitiveness (40%)

Normalized to cost per milligram for fair comparisons across vial sizes.

COA Availability (30%)

Third-party lab testing confirming purity, identity, and absence of contaminants.

Vendor Reputation (30%)

Community feedback, shipping reliability, customer service, and business track record.

Best Deal on Retatrutide →

All vendors sorted by $/mg — find the best deal

Calculate the Cost of Your Retatrutide Cycle →

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Best Semaglutide Vendors of 2026 →

Ranked by price, purity testing, and buyer trust

Calculate the Cost of Your Semaglutide Cycle →

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Premium partner. Nura Peptide pays for priority placement on this page. Our affiliate commission, COA verification, and per-mg pricing comparison remain independent — we still surface lower prices from other vendors when applicable. How premium placement works.