# Contract manufacturer vs. contract filler: differences explained | INOPREX

> Contract manufacturer vs. contract filler: who does what in the value chain? Definitions, regulatory responsibility and why INOPREX works with a network of both as the manufacturer.

Quelle: https://inoporex.de/en/wissen/lohnhersteller-vs-lohnabfueller/

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## Contract manufacturer and contract filler: who does what?

Distinguishing the two production roles — and why INOPREX, as the manufacturer, works with a network of both.

A contract manufacturer produces a complete product on behalf of a brand owner — from making the formulation to finished goods. A contract filler fills, converts and packages an existing product. Both roles coexist because different dosage forms require different plants and competencies.

## Terms compared

| Criterion | Contract manufacturer | Contract filler |
|---|---|---|
| Core service | Making the product (formulation, process) | Filling and packaging existing goods |
| Typical products | Creams, gels, capsules, tablets | Liquids, powders, converting |
| Plants | Mixing vessels, emulsifying, tableting | Filling and packaging lines |
| Regulatory proximity | GMP under ISO 22716 or ISO 13485 | GMP per category, often a supplier to the manufacturer |

## Why a network?

No single contract plant covers all dosage forms economically. INOPREX selects per project by dosage form, capacity and certification — the client still has only one contractual partner.

## What distinguishes INOPREX

INOPREX is not the contract manufacturer or filler but the manufacturer of the client project: INOPREX carries the regulatory responsibility, selects the contract plants and is responsible for quality, documentation and market access from a single source.

## Frequently asked questions

**Do I lose control as a client when partner plants manufacture?**

No. The sole contractual partner is INOPREX; the plants work to our specifications on our mandate. You have one contact.

**Why not an own factory?**

Because the range from creams to capsules to gummies cannot be represented economically in one plant. The network allows the optimal line per project.

## Applied to your project

We apply these rules directly to your project — from classification to market access. First assessment within two working days.

Stand: 2026-10-22 · Fachlich verantwortlich: INOPREX Scientific Direction