Research use only. Not for human consumption.
GLP-1 pens, not powder · Cold-chain shipped

The weight-loss
peptide pen company.

Retatrutide, Cagrilintide, AOD-9604 — the GLP-1 and metabolic compounds at the heart of modern weight-loss research, shipped as prefilled, dose-accurate pens. No vials, no bac water, no dose math. Pull the cap, dial, research.

Up to
100 mg / pen
vs 5 mg powder vials
HPLC purity
99.0%
third-party, every batch
From
$11.63 / mg
Reta — pen format
Resolution
0.1 mg
per click
Vivaprime Retatrutide prefilled research pen
Verified
HPLC tested
Identity + purity, every batch
Verified
EU cGMP site
Pharma-grade manufacturing
Verified
2–8 °C cold chain
Temp-logged US transit
Verified
Plain outer
No return logo, no product name
Featured · full specs on every card

Compounds, dose, purity, $/mg

The compounds

The GLP-1 weight-loss family

This category covers incretin-axis and metabolic-pathway compounds most commonly studied in energy-balance, glycemic-control, and adipose-signaling research. All are peptide or peptide-analog agonists acting on well-characterized receptors.

Semaglutide

GLP-1 mono-agonist. The most-studied compound in the class; longest-running clinical dataset.

Retatrutide

Triple agonist (GLP-1 + GIP + glucagon). Adds glucagon-receptor activity to further increase energy expenditure in preclinical models.

Cagrilintide

Long-acting amylin analog most notably co-studied with Semaglutide (the 'CagriSema' stack). Acts on amylin-receptor complexes — a different pathway from GLP-1/GIP, with additive effects on satiety signaling in published research.

AOD-9604

Non-incretin comparator. GH-fragment (hGH 176–191) studied for lipolytic effects — a distinct class from the GLP-1-axis agonists above.

5-Amino-1MQ

Small-molecule NNMT inhibitor studied in fat-cell metabolism and NAD-salvage research — a non-incretin complement to the GLP-1-axis compounds.

Shop the pens

Full specs — dose, purity, $/mg, and per-batch COA — on every product page.

Browse weight-loss pens
Why Vivaprime

Research-grade.
Ready to use.

Most research suppliers ship vials that require reconstitution, calculation, and careful handling. We took that out of the equation. Every Vivaprime product is a sealed, precisely dosed prefilled pen, manufactured in a licensed EU facility and third-party tested by batch.

EU cGMP
Manufacturing standard
Pharma-grade EU facility

Every batch produced in a licensed EU pharmaceutical facility and released against pre-registered identity and purity specifications.

0 / 6
Compounds with third-party COA
HPLC tested, every batch

Independent laboratory analyzes identity, purity, and residual solvents on every production lot. Each COA is linked from its product page.

2–8 °C
Cold-chain to door
Temp-logged US fulfillment

Insulated, temperature-logged shipments from our US warehouse. Same-week delivery across the continental US.

$1M+
Product liability coverage
Canadian corporate parent

Operating under a Canadian federal corporation with active product liability insurance covering US claims.

Format matters

The pen vs. the powder vial

Most research peptide suppliers ship lyophilized powder you have to reconstitute, measure, and inject. We ship the finished format — prefilled at spec, dose-accurate by design, lab-verified by batch.

Vivaprime pen
Prefilled · dose-accurate
Traditional powder vial
Reconstituted in lab
Reconstitution
None — prefilled at spec
Required: bac water + syringe + swirl
Dose resolution
0.1 mg per mechanical click
Syringe-barrel estimation (±0.5–2 mg)
Sterile surface
Single sealed cartridge
Rubber septum + exposed plunger
Package-to-dose time
< 60 seconds
5–15 minutes
Storage footprint
1 pen, fridge
Vial + bac water + syringes + alcohol pads
Dose math
None — counter handles geometry
Volume × concentration per injection

Research use only · comparison for format, not efficacy

GLP-1 pens, not powder.

The weight-loss compounds researchers ask for — prefilled, lab-verified, and shipped cold-chain to your door.