What exactly is Retatrutide (also called “Reta”), and where does the 20mg tier fit?
Retatrutide (commonly searched as “Reta”) is a triple-agonist synthetic peptide at the GLP-1, GIP, and glucagon receptors, studied in pre-clinical metabolic-axis models. The 20mg per vial tier is the mid-cohort step on the six-tier ladder, the most common step up from RT10 for studies that need higher working concentrations without splitting reconstitution across multiple vials in one session. All six tiers on the ladder (5, 10, 20, 30, 40, 60 mg) ship as kits of 10 vials or single vials.
What does this specific lot’s CoA cover?
Every RT20-20MG-10V lot ships with a batch-specific certificate: reverse-phase HPLC purity by area and mass-spec identity against theoretical mass. The CoA is not a stability panel — those are separate assays we do not run in-house.
How do I reconstitute a 20mg Retatrutide vial?
- Wipe the vial stopper with an alcohol swab.
- Draw 2 to 3 mL of bacteriostatic water (target working concentration determines exact volume).
- Inject the diluent slowly against the vial wall — do not aim at the peptide cake.
- Swirl gently to dissolve. Do not shake.
- Store the reconstituted vial at 2 to 8 °C. Use within 30 days.
Should I order the 20mg tier, or a different size?
Mid-cohort tier. The most common step up from RT10 for studies that need higher working concentrations without splitting reconstitution across multiple vials in one session.
How is Retatrutide different from Tirzepatide?
Tirzepatide is a dual GLP-1 / GIP agonist. Retatrutide adds a third arm at the glucagon receptor. The pre-clinical metabolic-axis literature treats that third activity as the mechanistic distinction between the two molecules.
What ships in the box, and how fast?
- 10 lyophilized Retatrutide 20mg vials
- 1 lot-specific certificate of analysis (HPLC + MS)
- 1 handling and reconstitution insert
Orders placed before 14:00 PT ship the same business day from our British Columbia facility. Canadian orders arrive in 2 to 4 business days after dispatch.