European Pharmacopoeia -ph. Eur.- Monograph Tablets -0478- Jun 2026

Friability testing determines the tablet's resistance to surface abrasion and fracture when subjected to mechanical shock. A sample of tablets is rotated in a drum (friabilitor) for a set number of revolutions. Monograph 0478 dictates that a maximum weight loss of is generally considered acceptable. E. Resistance to Crushing (2.9.8)

Must show no signs of disintegration or cracks when exposed to 0.1 M hydrochloric acid for 2 hours, but must disintegrate in a phosphate buffer solution (pH 6.8) within 60 minutes.

Where disintegration confirms mechanical breakdown, dissolution testing measures the actual rate at which the active pharmaceutical ingredient (API) dissolves into a solution. Following modern policy updates by the EDQM Commission , an immediate-release solid dosage monograph requires a specific dissolution test to ensure in vivo bioequivalence and batch-to-batch consistency. 3. Uniformity of Dosage Units (Ph. Eur. 2.9.40)

These have separate monographs (e.g., 2066, 2067, etc.). European Pharmacopoeia -ph. Eur.- Monograph Tablets -0478-

[Particle Aggregates] вћ” [Compression / Extrusion] вћ” [Mechanical Testing: 2.9.7 & 2.9.8] вћ” [Finished Tablet] Subdivision of Scored Tablets Specific monographs: Finished products - EDQM

The monograph distinguishes several categories of tablets based on their intended use or design. A summary of these categories, their definitions, and key considerations is provided in the table below:

For solid dosage forms, the active substance must be released and absorbed to be effective. The monograph gives priority to the Dissolution Test (2.9.3) , which measures the percentage of drug released into a specified medium over time (e.g., 80% in 30 minutes). For rapidly dissolving tablets of highly soluble drugs, a Disintegration Test (2.9.1) may be substituted, where tablets are placed in a basket-rack assembly in water at 37В°C and must disintegrate within a specified time (e.g., 15 minutes for uncoated tablets). For enteric-coated tablets, the monograph specifies two stages: resistance to disintegration in acidic medium (simulating stomach), followed by disintegration in neutral buffer (simulating intestine). Following modern policy updates by the EDQM Commission

In the context of the Ph. Eur., a monograph is a detailed specification that describes the characteristics, tests, and acceptance criteria for a particular dosage form, such as tablets. Monographs provide a standardized framework for manufacturers, regulators, and control laboratories to assess the quality of medicinal products.

All tablets must comply with the following tests unless otherwise stated in an individual monograph.

to clarify the efficacy of break-marks and refine dissolution requirements. More recently, the and mechanical strength

The European Pharmacopoeia Monograph for Tablets (0478) is far more than a technical document; it is a sophisticated quality management tool. By mandating tests for uniformity, disintegration, dissolution, and mechanical strength, it transforms a simple compressed powder into a predictable, safe, and effective medicine. It protects patients from dose dumping, poor absorption, and fragile products, while providing manufacturers with clear, legally enforceable specifications. As pharmaceutical science advances—towards personalized doses, 3D-printed tablets, and complex modified-release profiles—Monograph 0478 will continue to be revised and expanded. Yet its core mission remains unchanged: to ensure that every tablet, whether taken in a London hospital or a rural pharmacy in Greece, meets the highest possible standard of quality. In doing so, Ph. Eur. 0478 exemplifies the very essence of pharmacopoeial science: trust through testing.

: Evaluates the hard break threshold by applying direct compression force across the diameter of 10 sample tablets. Results are quantified and logged meticulously in Newtons.