American laboratories · Texas

Built for the iron.Made for bodybuilding.

An American brand engineered to a pharmaceutical standard. Advanced biotechnology and peptide research compounds — including the Pro Series line, dedicated to professional athletes.

No shortcuts. No dilution.Only the iron.

OVERKILL Laboratories logo

The house mark — steel, red, and the skull

Athlete setting up under a loaded bar in a bodybuilding gym

The floor does not negotiate.

/PRO SERIES/BODYBUILDING RESEARCH LINE/PHARMACEUTICAL STANDARD/MASTERON/PRIMOBOLAN/TRENBOLONE/SUSTANON/DECA DURABOLIN/MADE IN USA
/PRO SERIES/BODYBUILDING RESEARCH LINE/PHARMACEUTICAL STANDARD/MASTERON/PRIMOBOLAN/TRENBOLONE/SUSTANON/DECA DURABOLIN/MADE IN USA
First orderLimited launch offer

Want to try our products?Get 50% off your first purchase!

New to OVERKILL Laboratories? Your first order unlocks a 50% discount on the Pro Series line. Reach out through the contact channel to claim the offer.

50%
First-order discount
10
Pro Series refs
USA
Pharma standard
The lineup

Pro Series, on the board

Full catalog

Professional line · Made in USA

Pro Series

The professional-grade line engineered to a pharmaceutical standard. Discover the Pro Series references in the catalog.

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Lower concentration · Made in USA

Lite Series

A lower-concentration line formulated with Miglyol 812 carrier oil. Discover the Lite Series references in the catalog.

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RETAKILL 20 mg vial from OVERKILL Laboratories

RETAKILL · 20 mg · triple agonist

Named reference

Retakill

RETAKILL 20 mg is listed as retatrutide, a peptide compound investigated in metabolic research as a triple receptor agonist. Its studied mechanism involves simultaneous activity at the GLP-1, GIP and glucagon receptors — three signaling pathways that are the subject of ongoing research into energy balance and metabolic regulation.

Retatrutide is not presented here as an approved treatment, and no clinical effect, safety outcome or weight-loss result is claimed or guaranteed. This panel identifies the named compound and the receptor pathways under investigation for informational purposes only, without attributing any established therapeutic benefit.

ENQUIRE
Loaded Olympic bar and red plates on a gym floor

Standards

Pharmaceutical standard

Every OVERKILL Laboratories product is formulated following strict pharmaceutical-grade processes. Selected raw materials, stringent controls, and production in sterile environments.

  1. 01

    Verified composition

    Each batch undergoes analytical testing to assess composition and screen for contaminants.

  2. 02

    Rigorous control

    Scientific methodologies support consistent quality and traceability across every product.

  3. 03

    Sterile environments

    Production in controlled conditions with strict hygiene and sanitization protocols.

  4. 04

    Documented process

    Every production stage is documented and traced, with attention to detail throughout.

Bodybuilder chalking up before a session

The house

Three things we do not dilute

Strength

Structural and chemical integrity. Compounds formulated for demanding research applications.

Trust

Analytical transparency. Documented testing. Clinical-grade reliability for research use.

Innovation

Molecules sourced from the frontiers of biotechnology and peptide research.

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Formulation

Discover how our products are formulated

The carrier oil, the production standard, and why Miglyol 812 sits at the core of every vial.

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Single requests and distributors

The catalog is informational. Orders and affiliation run through one secure channel.

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