Microcrystalline cellulose (MCC) is a widely used excipient in the pharmaceutical industry, available for purchase from various suppliers. It is a purified, partially depolymerized cellulose that functions as a binder, disintegrant, and filler in tablet formulations [1].
What is Microcrystalline Cellulose Used For in Pharmaceuticals?
Microcrystalline cellulose is a versatile ingredient that plays a crucial role in tablet manufacturing. Its primary functions include:
* Binding: MCC acts as an excellent binder, helping to hold the ingredients of a tablet together, ensuring tablet integrity [1].
* Disintegration: It aids in tablet disintegration, allowing tablets to break down into smaller particles in the digestive tract, which is essential for drug release and absorption [1].
* Dilution/Filling: MCC is often used as a diluent or filler to increase the bulk of a tablet, making it a practical size for administration, especially for low-dose active pharmaceutical ingredients [1].
Where Can I Buy Microcrystalline Cellulose?
Microcrystalline cellulose can be purchased from numerous chemical and pharmaceutical ingredient suppliers. Companies specializing in excipients for pharmaceutical manufacturing offer MCC in various grades suitable for different tablet compression methods, including direct compression and wet granulation [1][2].
What Are the Different Grades of Microcrystalline Cellulose?
MCC is available in several grades, differentiated by particle size, density, and flow properties. These variations allow manufacturers to select the most appropriate grade for their specific formulation and manufacturing process [1]. For instance, grades with better flowability are preferred for direct compression, while others might be chosen for specific disintegration or binding requirements [1].
How Does Microcrystalline Cellulose Affect Tablet Properties?
The properties of microcrystalline cellulose significantly influence tablet characteristics. Its compressibility and compactibility are key factors in determining the mechanical strength and disintegration time of tablets. The specific grade of MCC used, along with other excipients and manufacturing parameters, will dictate the final tablet hardness, friability, and dissolution rate [1].
Are There Alternatives to Microcrystalline Cellulose?
While MCC is a popular choice, other excipients can serve similar functions in tablet formulations. These include various starches, lactose, dicalcium phosphate, and other cellulose derivatives, each with its own set of advantages and disadvantages regarding compressibility, flow, and compatibility with active ingredients [3]. The selection of an alternative often depends on the specific drug substance and desired tablet characteristics.