European Pharmacopoeia -ph. Eur.- Monograph — Tablets -0478-

Tablets are solid preparations containing a single dose of one or more active substances, typically obtained by compression.

| Category | Key Characteristics | | :--- | :--- | | | Single layer or multi-layer tablets without a coating. The most basic category. | | Coated Tablets | Covered with a coating (e.g., sugar, film) to protect ingredients or improve swallowability. | | Effervescent Tablets | Contain acids and carbonates; release gas when dissolved in water. Intended to be dissolved before administration. | | Soluble Tablets | Designed to dissolve completely in water, forming a clear or slightly opalescent solution. | | Dispersible Tablets | Intended to be dispersed in water to form a homogeneous dispersion before administration. | | Orodispersible Tablets | Designed to disintegrate rapidly (typically within 3 minutes) when placed on the tongue, releasing the active substance in saliva. | | Gastro-resistant Tablets | Also known as enteric-coated tablets. Their coating resists stomach acid and releases the active substance in the intestine. | | Modified-release Tablets | Formulated to release the active substance at a specific rate, over an extended period, or at a specific location in the GI tract. | | Tablets for Use in the Mouth | A broad category including buccal and sublingual tablets, designed to be retained in the mouth. Note: The Ph. Eur. has redefined this category to be within the scope of the Oromucosal preparations monograph (1807). | | Oral Lyophilisates | Freeze-dried, single-dose preparations that rapidly disintegrate in the mouth. The monograph's definition of this category has been clarified as "solid single-dose preparations made by freeze-drying of a liquid or semi-solid preparation". |

In the pharmaceutical industry, quality is not an abstract concept; it is defined by precise, legally binding standards. The , published by the European Directorate for the Quality of Medicines & HealthCare (EDQM) , provides these essential standards for medicines in Europe and beyond. Among its most crucial documents is Monograph 0478 , which is dedicated to a dosage form we encounter every day: Tablets . European Pharmacopoeia -ph. Eur.- Monograph Tablets -0478-

Containers must be well-closed. If the tablets are sensitive to moisture, "tight" or "hermetic" containers may be required.

| Parameter | Ph. Eur. 0478 | USP <701>/<711> | JP (General Tests) | | :--- | :--- | :--- | :--- | | Disintegration time (uncoated) | 15 min | 15 min (but often 30 min for large tabs) | 15 min | | Dissolution vessel volume | 900 mL (preferred) | 500, 900, or 1000 mL | 900 mL | | Friability acceptance | 1.0% (uncoated) | 1.0% (but 0.8% for high-use) | 1.0% | | Uniformity of dosage units | AV ≤ 15.0 (2.9.40) | AV ≤ 15.0 (identical via ICH Q4B) | AV ≤ 15.0 | Tablets are solid preparations containing a single dose

Following Ph. Eur. standards is legally binding for marketing medicines in signatory states. It provides the scientific basis for quality control throughout a product's life cycle—from development to final distribution.

Monograph 0478 applies universally to solid preparations containing a single dose of one or more active substances. These are obtained by compressing uniform volumes of particles or by other specialized manufacturing techniques like freeze-drying (lyophilisation) or molding. | | Coated Tablets | Covered with a coating (e

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

In the pharmaceutical world, the is the gold standard for quality control, and Monograph 0478 is the essential blueprint for anyone manufacturing or testing oral tablets. This general monograph defines exactly what a tablet is and sets the baseline requirements for its production and performance. What is Monograph 0478?