Reta ZPHC — 10 mg (5 vials × 2 mg)

$83.00

For research use only: analytical reference material; not intended for human use.

Category: Peptides Canada

Description
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Buy RETA

Buy Reta (LY3437943) is a triple GLP-1/GIP/glucagon agonist developed by Eli Lilly. It’s still in Phase 3 clinical trials, making it the most potent weight loss peptide available that has no FDA-approved prescription version yet. Phase 2 trials showed average weight loss of ~24% at 48 weeks, higher than semaglutide (~15%) or tirzepatide (~22%). The only way to access it currently is via research peptide vendors.

Where to Buy Retatrutide, Our Top Pick

Ascension Peptides is our primary recommendation:

Carries R-10 (10mg, $120) and R-30 (30mg, $200)
US-based manufacturing
Third-party COA on every batch, HPLC purity ≥98%
Mass spectrometry verification (critical for a complex triple agonist)
Discreet US domestic shipping

Red Flags to Avoid

No COA or COA only “available on request”
Purity not listed, or listed as “≥95%” without HPLC documentation
Dramatically underpriced (R-30 for $60 = almost certainly underdosed)
Ships from overseas with no US warehouse
No mass spectrometry data (especially important for retatrutide)
Generic product photos with no lot number information

Reconstituting Retatrutide After Purchase

Add BAC water to the vial slowly (down the inside wall, never directly onto powder)
Recommended: 2mL per 10mg vial = 5mg/mL. 3mL per 30mg vial = 10mg/mL.
Full guide at: /blog/retatrutide-reconstitution-guide
Calculator: Reconstitution Calculator
Store refrigerated, use within 28 days

Retatrutide Dosage After Purchase

Starting dose: 0.5-2mg per week (once weekly subcutaneous injection)
Titrate up gradually to manage GI side effects
Most effective protocols reach 4-8mg/week over time
Full dosage chart: /blog/retatrutide-dosage-chart

Is retatrutide legal to buy?

Yes, as a research peptide, retatrutide is legal to purchase in the US. There is no FDA-approved prescription version yet (it’s in Phase 3 trials), so it’s sold by research peptide vendors without a prescription.

What’s the difference between R-10 and R-30?

R-10 is a 10mg vial ($120) and R-30 is a 30mg vial ($200), both are Ascension Peptides’ product codes for retatrutide. R-30 offers significantly better value at $6.67/mg vs $12/mg.

How long does a retatrutide vial last?

R-30 at 2mg/week lasts approximately 15 weeks. At 4mg/week, about 7-8 weeks. At 8mg/week, about 3-4 weeks.

mg (5 vials × 2 mg)