Povidone K30 – The optimal polymer for enhancing binding performance and tablet durability

1. General introduction to Povidone K30

Povidone, also known as PVP (polyvinylpyrrolidone), is a polymerized product of 1-vinyl-2-pyrrolidinone (C₆H₉NO). It is a non-ionic polymer widely used in pharmaceutical manufacturing.

Povidone K30 is a medium molecular weight grade of PVP (40,000–58,000 Da) and is the most commonly used excipient among PVP grades.

2. Physicochemical properties of Povidone K30

Key technical characteristics:

• Hygroscopic nature supports moisture-assisted binding
• Amorphous structure enhances API dispersion
• Strong hydrogen bonding capability with APIs
• High glass transition temperature improves stability

3. Key Advantages of Povidone K30

• Balances binding capacity, tablet hardness, and disintegration performance, producing tablets with high mechanical strength while maintaining proper disintegration and dissolution
• Promotes uniform granule formation, improving compressibility and ensuring batch-to-batch consistency
• Enhances mechanical durability by reducing tablet breakage and abrasion during packaging, transportation, and storage
• Process-flexible and suitable for direct compression, wet granulation, and dry granulation processes
• Protects active ingredients by stabilizing sensitive APIs through molecular interactions and reducing degradation
• Capable of forming taste-masking complexes with certain bitter APIs in suspensions, such as paracetamol and guaifenesin
• Global regulatory compliance: Accepted in major pharmacopeias such as USP, EP, and JP

4. Applications of Povidone K30 

Povidone K30 is widely used in various pharmaceutical dosage forms, particularly in formulations requiring high mechanical strength while maintaining proper disintegration and dissolution performance.

Tablet

• Immediate-release tablets: Enhances binding properties, improves tablet hardness, and ensures content uniformity during compression
• High drug-load tablets: Maintains tablet integrity without adversely affecting dissolution rate
• Effervescent tablets: Supports rapid disintegration while preserving mechanical stability during storage
• Chewable tablets: Improves plasticity, cohesiveness, and mouthfeel
• Film-coated tablets: Used as a component in film-coating solutions to reduce the viscosity of HPMC systems without compromising film-forming ability or moisture permeability

Capsules and granules

• Hard capsules: Supports cohesiveness during granule preparation
• Wet granulation formulations: Serves as a key binding excipient, producing strong and uniform granules

Liquid and semi solid dosage forms

• Oral solutions/suspensions: Functions as a viscosity enhancer, thickening agent, suspending agent, and dispersion stabilizer
• Gels and topical formulations: Provides film-forming properties, viscosity control, and improved adhesion

One of the high-value applications of Povidone K30 is its taste-masking capability through hydrogen bonding and weak molecular interactions with active pharmaceutical ingredients (APIs). Povidone K30 can significantly reduce the bitterness and unpleasant taste of APIs such as paracetamol, guaifenesin, and other compounds with bitter or metallic tastes.

This mechanism is particularly effective in oral suspensions, where palatability directly impacts patient compliance. In addition, complex formation helps minimize API crystallization or precipitation, enhances the physical stability of the system, and reduces dependence on sweeteners and flavoring agents.

5. Sample Povidone K30 products

6. Product contact information

For more information about Povidone K30 supply, please contact us:

• Hotline: +84 (0) 834 560 500
• Email: biopharma@biorichpharma.com
• Website: www.biorichpharma.com
• Sample / COA request: Please contact us via email to receive samples and the latest Certificate of Analysis (COA).