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TL;DRDosage form (Darreichungsform) is the physical form in which a medicine is presented and administered, for example a film-coated tablet, a hard capsule or a solution for injection. It is a defining product attribute, ranking alongside the active ingredient and the strength.
Together those three attributes, active ingredient, strength and dosage form, describe what a medicine actually is. The active ingredient states the substance, the strength states how much of it a single unit carries, and the dosage form states how that substance reaches the patient. The same active ingredient can exist as a tablet swallowed whole, as a prolonged-release tablet that releases the substance over hours, as an injectable solution, or as a topical cream, and each of these is a distinct dosage form with distinct handling, stability and administration. Because the dosage form changes how and where a drug acts, it is not a cosmetic label. It is a regulated identity attribute recorded in the marketing authorisation and in the Fachinformation (see SmPC / Fachinformation).
Across the EU the naming of dosage forms is not free text. It follows the EDQM Standard Terms, the controlled vocabulary maintained by the European Directorate for the Quality of Medicines & HealthCare (EDQM) of the Council of Europe. The Standard Terms database holds, in its own words, "terms and definitions to describe pharmaceutical dose forms, routes and methods of administration, containers, closures, administration devices and units of presentation", and provides them in 35 languages. These terms are used in marketing authorisation applications, in labelling and in the SmPC, so a product named "Filmtablette" in Germany maps to the same controlled concept "film-coated tablet" elsewhere.
To characterise a dose form the EDQM vocabulary combines several internal attributes rather than treating each form as an opaque name.
| EDQM internal attribute | What it captures | Example value |
|---|---|---|
| State of matter | Physical state of the form | Solid, liquid |
| Basic dose form | Underlying form type | Tablet, capsule |
| Release characteristics | How the substance is released | Prolonged-release, gastro-resistant |
| Intended site | Where it is applied or acts | Oral, ophthalmic |
| Transformation | Preparation step before use | Powder for solution |
| Administration method | How it is given | For injection, for inhalation |
The same conceptual model underlies ISO 11239, the IDMP standard for "pharmaceutical dose forms, units of presentation, routes of administration and packaging". ISO 11239 defines the data elements and structures needed to identify a dose form unambiguously and to map regional terms onto a shared set, which is why it sits inside the wider IDMP family of identification standards. In practice the EDQM Standard Terms are the reference terminology the EU uses to satisfy that ISO model.
A few worked examples show how a dosage-form name is really a compact description of state, release and route.
| Dosage form (EN) | Darreichungsform (DE) | Reading |
|---|---|---|
| Film-coated tablet | Filmtablette | Solid, oral, immediate release, coated |
| Prolonged-release tablet | Retardtablette | Solid, oral, extended release over time |
| Gastro-resistant capsule, hard | Magensaftresistente Hartkapsel | Solid, oral, release delayed past the stomach |
| Solution for injection | Injektionslösung | Liquid, parenteral, ready to inject |
| Powder for oral solution | Pulver zur Herstellung einer Lösung zum Einnehmen | Solid, transformed to liquid before oral use |
The dosage form is one of the substitution criteria under §129 Abs. 1 SGB V. A pharmacy may hand out a different manufacturer's product only if it matches the prescribed one on all of the statutory points, and the dosage form is one of them.
The last point carries most of the practical difficulty, because two forms can be therapeutically comparable without being identically named. A hard capsule and a film-coated tablet may or may not be interchangeable, depending on their release behaviour. The statute therefore delegates the judgement: the G-BA maintains a list of interchangeable dosage forms in Anlage VII Teil A of the Arzneimittel-Richtlinie (AM-RL), which sets out "Hinweise zur Austauschbarkeit von Darreichungsformen unter Berücksichtigung ihrer therapeutischen Vergleichbarkeit". Where two forms of the same substance appear together in a Teil-A group, the pharmacy has a binding reference that they may be exchanged; where they do not, they may not. This is the mechanism that makes generic substitution work at the counter, so the dosage form links directly to aut idem and to the economics of the Generikum.
On pharmazie.com the dosage form is one of the article identity attributes carried per PZN, drawn from the licensed ABDA article master data. It sits in the base-data section next to the active ingredient, strength, pack size and provider, and it is one of the fields whose change can trigger a new PZN, because a different dosage form is a different article.
One honest limitation: the stored dosage-form label tells you what a product is, but it does not by itself decide interchangeability. Whether two forms may be swapped is a legal question answered by the current G-BA Anlage VII Teil A list under §129 SGB V, which changes over time. Treat the field as a precise identity attribute and a research aid, not as a substitution ruling.
