Customized capsules have become a significant part of various industries, from pharmaceuticals to nutraceuticals and even in the food and beverage sector. As a supplier of customized capsules, I have witnessed firsthand the diverse range of capsule types available and the unique benefits they offer. In this blog post, I will explore the different types of customized capsules, their applications, and the factors to consider when choosing the right one for your specific needs. Customized Capsules

Hard Gelatin Capsules
Hard gelatin capsules are one of the most common types of capsules used in the pharmaceutical and nutraceutical industries. They are made from gelatin, a protein derived from animal collagen, typically sourced from bovine or porcine origins. The gelatin is mixed with water and other additives to form a solution, which is then molded into two separate halves of the capsule shell. The two halves are then filled with the desired active ingredients and sealed together.
One of the main advantages of hard gelatin capsules is their versatility. They can be filled with a wide range of substances, including powders, granules, pellets, and liquids. They are also easy to swallow and have a relatively fast dissolution rate, which allows the active ingredients to be released quickly into the body. Additionally, hard gelatin capsules are available in a variety of sizes and colors, making them suitable for different applications and branding needs.
However, hard gelatin capsules also have some limitations. They are not suitable for products that are sensitive to moisture or oxygen, as gelatin is a hygroscopic material that can absorb water and interact with oxygen. They are also not recommended for use in vegan or vegetarian products, as gelatin is derived from animal sources.
Vegetarian Capsules
Vegetarian capsules are a popular alternative to hard gelatin capsules for individuals who follow a vegetarian or vegan lifestyle. They are typically made from plant-based materials, such as hydroxypropyl methylcellulose (HPMC) or pullulan. HPMC is a cellulose derivative that is derived from wood pulp, while pullulan is a polysaccharide that is produced by fermentation of starch.
Vegetarian capsules offer several advantages over hard gelatin capsules. They are suitable for use in vegan and vegetarian products, as they do not contain any animal-derived ingredients. They are also more resistant to moisture and oxygen than hard gelatin capsules, making them suitable for products that are sensitive to these factors. Additionally, vegetarian capsules have a similar dissolution rate to hard gelatin capsules, which allows for the rapid release of the active ingredients into the body.
However, vegetarian capsules also have some limitations. They are generally more expensive than hard gelatin capsules, which can increase the cost of production. They may also have a slightly slower dissolution rate than hard gelatin capsules, which can affect the bioavailability of the active ingredients.
Soft Gelatin Capsules
Soft gelatin capsules are another type of capsule that is commonly used in the pharmaceutical and nutraceutical industries. They are made from a gelatin-based shell that is filled with a liquid or semi-solid formulation. The shell is typically made from a mixture of gelatin, water, and a plasticizer, such as glycerin or sorbitol. The liquid or semi-solid formulation can contain a variety of active ingredients, including oils, vitamins, minerals, and herbal extracts.
One of the main advantages of soft gelatin capsules is their ability to deliver high doses of active ingredients in a single dose. They are also suitable for products that are sensitive to oxidation or degradation, as the liquid or semi-solid formulation is protected by the gelatin shell. Additionally, soft gelatin capsules are easy to swallow and have a pleasant taste and odor, which can improve patient compliance.
However, soft gelatin capsules also have some limitations. They are more expensive to manufacture than hard gelatin capsules, which can increase the cost of production. They are also not suitable for products that are sensitive to moisture or oxygen, as the gelatin shell can absorb water and interact with oxygen.
Enteric-Coated Capsules
Enteric-coated capsules are a type of capsule that is designed to resist dissolution in the acidic environment of the stomach and release the active ingredients in the intestines. They are typically made from a hard gelatin or vegetarian capsule shell that is coated with a special polymer. The polymer is designed to dissolve at a specific pH level, which is typically higher than the pH of the stomach.
One of the main advantages of enteric-coated capsules is their ability to protect the active ingredients from acid degradation in the stomach. This can improve the bioavailability of the active ingredients and reduce the risk of side effects. Enteric-coated capsules are also suitable for products that are irritating to the stomach, such as nonsteroidal anti-inflammatory drugs (NSAIDs).
However, enteric-coated capsules also have some limitations. They are more expensive to manufacture than non-enteric-coated capsules, which can increase the cost of production. They may also have a slower dissolution rate than non-enteric-coated capsules, which can affect the onset of action of the active ingredients.
Sustained-Release Capsules
Sustained-release capsules are a type of capsule that is designed to release the active ingredients slowly over an extended period of time. They are typically made from a hard gelatin or vegetarian capsule shell that is filled with a special formulation of the active ingredients. The formulation is designed to release the active ingredients at a controlled rate, which can provide a more consistent level of drug concentration in the body.
One of the main advantages of sustained-release capsules is their ability to reduce the frequency of dosing. This can improve patient compliance and reduce the risk of side effects. Sustained-release capsules are also suitable for products that have a short half-life or that require a steady level of drug concentration in the body.
However, sustained-release capsules also have some limitations. They are more expensive to manufacture than immediate-release capsules, which can increase the cost of production. They may also have a slower onset of action than immediate-release capsules, which can affect the treatment of acute conditions.
Factors to Consider When Choosing the Right Capsule Type
When choosing the right capsule type for your specific needs, there are several factors to consider. These include:
- Active ingredients: The type of active ingredients you want to encapsulate will determine the most suitable capsule type. For example, if you are encapsulating a liquid or semi-solid formulation, soft gelatin capsules may be the best option. If you are encapsulating a powder or granular formulation, hard gelatin or vegetarian capsules may be more suitable.
- Stability: The stability of the active ingredients will also affect the choice of capsule type. If the active ingredients are sensitive to moisture, oxygen, or light, you may need to choose a capsule type that provides better protection, such as enteric-coated or sustained-release capsules.
- Patient compliance: The ease of swallowing and the taste and odor of the capsules can also affect patient compliance. If your target audience includes individuals who have difficulty swallowing pills, you may want to consider choosing a capsule type that is smaller or has a more pleasant taste and odor.
- Cost: The cost of the capsules can also be a factor to consider. Hard gelatin capsules are generally the least expensive option, while enteric-coated and sustained-release capsules are typically more expensive.
Conclusion

Customized capsules offer a variety of options for delivering active ingredients in a convenient and effective manner. As a supplier of customized capsules, I understand the importance of choosing the right capsule type for your specific needs. By considering the factors discussed in this blog post, you can make an informed decision and select the capsule type that will provide the best results for your product.
HPMC Capsules If you are interested in learning more about our customized capsule solutions or would like to discuss your specific requirements, please do not hesitate to contact us. We are committed to providing high-quality products and exceptional customer service, and we look forward to working with you to meet your needs.
References
- Bauer, K., & Frömming, K. H. (2017). Pharmaceutical dosage forms: Tablets. In H. A. Lieberman, L. Lachman, & J. B. Schwartz (Eds.), Pharmaceutical Dosage Forms: Tablets (Vol. 2, pp. 1-200). Informa Healthcare.
- Gill, H. S., & Prasad, J. (2017). Soft gelatin capsules: Advantages and limitations. In H. A. Lieberman, L. Lachman, & J. B. Schwartz (Eds.), Pharmaceutical Dosage Forms: Tablets (Vol. 2, pp. 201-220). Informa Healthcare.
- Rowe, R. C., Sheskey, P. J., & Quinn, M. E. (2018). Handbook of pharmaceutical excipients. Pharmaceutical Press.
- Schmidt, P. C., & Bodmeier, R. (2017). Enteric-coated dosage forms: A review of formulation and evaluation. AAPS PharmSciTech, 18(6), 1857-1872.
- Verma, R. K., Garg, S., & Garg, S. (2017). Sustained-release dosage forms: A review of formulation and evaluation. AAPS PharmSciTech, 18(6), 1873-1890.
Hubei Kornnac Pharmaceutical Co., Ltd.
Hubei Kornnac Pharmaceutical Co., Ltd. is one of the most professional customized capsules manufacturers and suppliers in China, specialized in providing high quality OEM service. Welcome you to buy bulk customized customized capsules at competitive price from our factory. Also, samples are available.
Address: No.439 Hebei Avenue, Chibi, Hubei Province, 437300, China.
E-mail: service@kornnaccaps.com
WebSite: https://www.kornnaccaps.com/