Capsule shells are an essential part of every medication. Besides encapsulating the drug, the capsule shell can also aid in better absorption or control the release of the drug, allowing it to reach specific absorption sites beyond the stomach, such as the small or large intestines. In this article, Greenifi Gelatin explores the potential of gelatin in the pharmaceutical capsule industry.
The Importance of Gelatin in Capsule Production
Capsules are a form of oral medication, where the primary component of the capsule shell, accounting for up to 40%, is gelatin. There are two main types of capsules: hard capsules and soft capsules. Each capsule comprises two main parts: the empty shell and the encapsulated substance.
Soft Capsules
Soft capsules, or soft gels, have a flexible, slightly elastic shell that allows manufacturers to customize their size and shape. Typically, soft gels have a hardness ranging from 100 to 180 Bloom, with gelatin comprising 35-40% of the shell. The high gelatin content in soft gels is due to their use in containing liquid or oil-based drugs, which require a shell that can expand or contract slightly with temperature changes, thereby preserving the integrity of the active ingredients.
Hard Capsules
Hard capsules have a rigid shell, pre-shaped to a specific form by the manufacturer. These shells are also made from gelatin but are designed to release their contents quickly. The gelatin content in hard capsules is lower than in soft gels, typically between 13-16%, with a higher Bloom rating of 200-280 due to their reduced elasticity.
The Unique Properties of Gelatin in Capsule Manufacturing
Gelatin is indispensable in capsule production for several reasons:
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Chemical Inertness: Gelatin forms the capsule shell without reacting chemically with the active ingredients inside. Additionally, gelatin is colorless, odorless, and tasteless, which alleviates concerns about the smell, taste, and color of the medication for consumers.
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Ease of Dissolution and Digestion: Gelatin is easy to dissolve and digest at body temperature. With a melting point close to 35°C, gelatin capsules dissolve and are digested efficiently in the human body, which typically maintains a temperature of around 36-37°C.
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Biocompatibility: Gelatin is compatible with the human body, making it a safe and friendly material for absorption. It is carb-free, making it suitable for low-carb diets, and does not contain glucose, lactose, or any sugars, making it appropriate for those on special diets or with diabetes. Gelatin also does not cause indigestion, allergic reactions, or anaphylactic shock.
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Cost-Effectiveness and Availability: Using gelatin in capsule manufacturing is also cost-effective. It is a relatively inexpensive and abundant raw material, offering a stable supply compared to many alternative materials. This affordability and reliability help manufacturers optimize production costs while maintaining high quality.
Conclusion
Gelatin is a crucial component in the pharmaceutical and cosmetic industries for capsule production. Its unique properties—chemical inertness, ease of dissolution, biocompatibility, and cost-effectiveness—make it indispensable for manufacturing capsules, which play a significant role in the global pharmaceutical industry.
Stay tuned with Greenifi Gelatin to learn more about the diverse applications of gelatin!
