Best Place to Buy Retatrutide in 2026
By Peptideals · Updated November 2026 · Prices pulled live from 61 vendors
Retatrutide is one of the most searched research peptides of 2026, and prices still vary widely between vendors. Below are live prices from every active vendor we track, with coupon codes applied and ranked by price per mg.
Cheapest Retatrutide right now
Step One: 100mg for $126.00
$1.26 per mg with code peptideals, about 63% below the typical price per mg.
Top 10 Vendors for Retatrutide, Ranked by Price per mg
Each vendor's best value listing, with its coupon code already applied. Prices for buy one get one free deals are shown per vial (half the price of two). Shipping not included.
| # | Vendor | Size | With Code | Per mg | Code |
|---|---|---|---|---|---|
| 1 | Step One | 100mg | $126.00 | $1.26 | peptideals |
| 2 | Southern Aminos | 100mg | $156.40 | $1.56 | peptideals |
| 3 | Peptinexia | 20mg | $31.50 | $1.57 | PEPTIDEALS |
| 4 | Longevity Pro Labs | 48mg | $76.50 | $1.59 | peptideals |
| 5 | Peptide Giants | 100mg | $188.37 | $1.88 | peptideals |
| 6 | Hacker Peptides | 30mg | $57.67 | $1.92 | PEPTIDEALS |
| 7 | RetaOne Labs | 70mg | $142.50 | $2.04 | peptideals |
| 8 | Fusion Peptide | 66mg | $135.52 | $2.05 | PEPTIDEALS |
| 9 | Prism Aminos | 30mg | $61.65 | $2.06 | PEPTIDEALS |
| 10 | Certified Peptides | 120mg | $270.00 | $2.25 | WEEKEND40 |
Cheapest Retatrutide by Vial Size
- 5mg (15 vendors)Peptinexia at $16.88
- 6mg (2 vendors)EZ Peptides at $33.30
- 10mg (55 vendors)Peptinexia at $21.00
- 12mg (5 vendors)RetaOne Labs at $33.25
- 15mg (8 vendors)RetaOne Labs at $40.85
- 20mg (45 vendors)Peptinexia at $31.50
- 24mg (3 vendors)EZ Peptides at $63.00
- 30mg (43 vendors)Peptinexia at $48.75
About Retatrutide
Retatrutide is a triple agonist (GLP-1, GIP and glucagon receptors) studied in metabolic research. It is newer than Semaglutide and Tirzepatide, so vendor pricing moves often and sales are common. Many vendors also list it under codes like 3G-RT or GLP-3 RT, which we match to Retatrutide automatically.
What to Check Before You Buy Retatrutide
- Compare price per mg, not the sticker price. A bigger vial is often much cheaper per mg.
- Look for third party COAs (certificates of analysis) that name the vendor and match the batch you receive.
- Use the vendor's coupon code at checkout. Every price on this page already includes it.
- Check shipping costs and free shipping thresholds, which can change which vendor is really cheapest.
- Watch for sales. Many vendors run weekend and holiday sales that stack with our code; we list them on the deals page.
Vendors We've Unboxed
We filmed real orders from Southern Aminos, Longevity Pro Labs, Hacker Peptides, showing the packaging, labels and vial condition. Watch the Peptideals Unboxing Series.
FAQ
Where is the cheapest place to buy Retatrutide right now?
Right now the lowest price per mg we track is Step One: 100mg for $126.00 with code peptideals, about $1.26 per mg. Prices change often, so check the live Retatrutide price page before you order.
How many vendors sell Retatrutide?
We currently track 61 active vendors with Retatrutide in stock, each with its own coupon code applied in our prices.
How much can I save by comparing Retatrutide prices?
The cheapest vendor is about 63% below the typical (median) price per mg across all vendors we track, before shipping.