How to Choose the Right Gelatin for Your Pharmaceutical and Nutraceutical Products

Bloom strength is the most critical parameter when selecting gelatin for hard or soft capsules. A higher bloom value (e.g., 250 g) indicates a firmer gel, which provides better structural integrity for hard capsules. Lower bloom grades (150–180 g) are often preferred for softgels and gummy formulations where flexibility and chewability are desired. Always match bloom strength to your specific manufacturing process and end-product requirements.

The source of gelatin significantly impacts its functional properties. Bovine gelatin offers higher thermal stability and is commonly used in hard capsules and tablet coatings. Porcine gelatin provides excellent clarity and is widely used in softgels and confectionery. For markets requiring halal or kosher certification, fish gelatin is an excellent alternative. Each source has unique gelling and melting characteristics that influence processing parameters.

Viscosity determines how gelatin flows during encapsulation and coating processes. High-viscosity grades are ideal for softgel production as they reduce the risk of leakage and improve fill uniformity. Low-viscosity gelatin is better suited for spray-drying or micro-encapsulation applications. Consistent viscosity ensures reproducible results across batches, reducing waste and improving production efficiency.