See the DrugPatentWatch profile for povidone
Povidone is a synthetic polymer known for its water solubility and low toxicity [1]. It is a polymer of N-vinylpyrrolidone [2]. Povidone's properties allow it to function as a binder, disintegrant, solubilizer, and film-former in various applications [3].
What are the different types of povidone?
Povidone is available in different molecular weights, denoted by grades such as K-15, K-30, and K-90 [4]. These grades differ in their viscosity and application suitability. For instance, lower molecular weight grades are often used for tablet disintegration, while higher molecular weight grades are suitable for film coating and suspension stabilization [4].
Where is povidone used?
Povidone has widespread use in pharmaceuticals, cosmetics, and industrial applications [1][3]. In pharmaceuticals, it acts as an excipient in tablets, capsules, and ophthalmic solutions [3]. Its binding properties help hold tablet ingredients together, while its disintegrant properties aid in drug release [3]. In cosmetics, povidone is used in hair styling products for its film-forming capabilities and in skincare formulations [1]. Industrially, it finds use as a stabilizer and dispersant [1].
What is Povidone-iodine?
Povidone-iodine is a complex of povidone with iodine [5]. This combination releases iodine slowly, acting as an effective antiseptic and disinfectant [5]. It is widely used in healthcare settings for skin preparation before surgery and for wound disinfection [5].
How does povidone compare to other binders?
Compared to other tablet binders like starch or cellulose derivatives, povidone generally offers strong binding properties and good tablet hardness [4]. Its solubility allows for easy formulation, and it is less prone to moisture absorption than some other binders [4].
Are there any safety concerns with povidone?
Povidone is generally considered safe for its intended uses, with low oral and dermal toxicity [1][3]. However, some individuals may experience allergic reactions to povidone-containing products [6]. In pharmaceutical formulations, the concentration of povidone is carefully controlled to ensure safety and efficacy [3].
Sources:
1. https://www.drugpatentwatch.com/glossary/povidone
2. https://pubchem.ncbi.nlm.nih.gov/compound/Povidone
3. https://www.drugpatentwatch.com/glossary/povidone-uses
4. https://www.drugpatentwatch.com/glossary/povidone-grades
5. https://www.drugpatentwatch.com/glossary/povidone-iodine
6. https://www.drugpatentwatch.com/glossary/povidone-side-effects