Understanding Ph. Eur. Monograph 0478: The Standard for Tablets
Ph. Eur. 0478 allows a "re-test" for disintegration (repeat on 6 new tablets) if 1-2 of the first 6 fail. USP <701> requires that if 1-2 fail, you test 12 more; if more than 2 fail initially, rejection is immediate. European Pharmacopoeia -ph. Eur.- Monograph Tablets -0478-
The monograph demands that tablets be "sufficiently hard to withstand handling." But it also introduces the concept of (often referenced in conjunction with the monograph). Friability is the tendency of a tablet to crumble. If a tablet is too hard, it won't dissolve; if it's too soft, it turns to dust in the bottle. Monograph 0478 ensures that the definition of "quality" includes structural integrity, preventing patients from receiving a partial dose due to chipped or broken pills. Understanding Ph
The monograph sets GMP-related principles for manufacture: The monograph demands that tablets be "sufficiently hard
To reflect the diversity of modern pharmaceutical formulations, monograph 0478 distinguishes several categories of tablets, each with its own specific considerations:
The is the definitive, legally binding standard that dictates the manufacturing, quality control, and regulatory compliance requirements for tablets intended for oral administration across all signatory states of the Council of Europe . Maintained by the European Directorate for the Quality of Medicines & HealthCare (EDQM) , this general monograph serves as a foundational blueprint for pharmaceutical manufacturers worldwide who wish to market solid oral dosage forms in Europe. Scope and Definition of Monograph 0478
| Test Category | Key Aspects & Acceptance Criteria | | :--- | :--- | | | Verifies that each tablet contains the correct amount of active substance. The test method depends on the substance's content. Uniformity of Content is used for low-dose tablets (< 2 mg or < 2% of total mass), while Uniformity of Mass (2.9.5) is used otherwise. If Uniformity of Content is performed, the mass test is not required. | | Dissolution/Disintegration | The Rule: A dissolution test is required for immediate-release solid dosage forms. The Exception: If a dissolution test is performed, a disintegration test is not required. The Method: For dissolution, one of the tests in general chapter 2.9.3 must be used (unless another is justified). For disintegration, the standard method (2.9.1) is used. | | Friability (2.9.7) & Crushing Strength (2.9.8) | These tests measure a tablet's physical durability and resistance to breakage, ensuring it can withstand the stress of manufacturing and handling. |