Hard Capsules - Contract Manufacturing
Welcome to the most comprehensive source of information about hard capsules!
We deal with contract manufacturing of hard capsules, adapting the process to the individual needs of our clients. Our experience and advanced production technologies allow us to produce products that meet the highest quality standards, making us a reliable partner in the industry.
Thanks to the following compendium of knowledge you will learn why hard capsules are so popular in the dietary supplement industry. You'll learn about their benefits, the production process, and the best practices we use to ensure your products are always of the highest quality.
Hard capsule production involves forming two cylindrical parts, which are then joined together after being filled with the active ingredient. Once this process is complete, the capsules undergo quality control and are then packaged.
Hard capsule
Hard capsule is a solid oral form, consisting of two parts that snap together: a cap and a body. It is used to administer a precisely measured dose of various substances – not only medicinal, but also vitamins, minerals, herbal extracts or other ingredients of dietary supplements, most often in the form of powder or granules. In contrast to soft capsule, its casing does not contain plasticizers.
Why hard capsules in dietary supplements?
Hard capsules They are among the most popular forms of dietary supplements – and for good reason. Thanks to their two-part construction and stable materials (such as gelatin and HPMC), they are not only convenient to take but also effectively protect the active ingredients.
This form is ideal for vitamin, mineral and herbal preparations, ensuring precise dosing and rapid dissolution in the stomach, which affects the effectiveness of supplementation.
- Effective protection of ingredients against oxidation and moisture
- Possibility of combining several substances in one capsule
- Easy to swallow and comfortable to use
Thanks to the precise production process, hard capsules They provide optimal protection of ingredients, which translates into improved bioavailability and effectiveness of dietary supplements. By choosing this form, manufacturers gain a guarantee of quality and flexibility in choosing sizes and materials.
Hard Capsule Manufacturer (B2B)
As experienced contract manufacturer of hard capsules, we support companies from the dietary supplements and pharmaceutical sectors in implementing their ideas. Our team of specialists ensures full support of the production process: from the initial concept and recipe development to the final packaging of the finished products hard capsulesThis allows you to focus on building your brand and sales, while we handle the technological and regulatory issues.
Whether you want to introduce a new dietary supplement to the market or expand your portfolio with another product line, we offer:
- Professional R&D laboratory for formula design
- Modern machinery with the possibility of filling various forms (powders, granulates, liquids)
- Personalization options: capsule sizes, colors, prints
- Raw materials for the production of dietary supplements: gelatin, HPMC, acid-resistant capsules and others
- Flexible production capacities: both small and large batches
We conduct all processes in accordance with rigorous standards GMP i ISO. Advanced quality control procedures ensure that each batch of capsules meets the requirements of both the pharmaceutical and supplementation industries.
Hard Capsule Production
Hard Capsule Production involves forming them from two cylindrical parts, which are then joined together after being filled with the active substance. This process typically involves dipping the molds in a solution of gelatin or other suitable material, drying, removing, and joining the finished capsule parts.
Hard capsule production process:
- Preparation of shells:
- Capsule-shaped molds are immersed in a solution of gelatin or other material (e.g. cellulose).
- After removal from the solution, the molds are dried to obtain the appropriate shell hardness.
- The finished, dried shells are removed from the molds.
- Filling:
- The capsules are filled with an appropriate mixture of active and auxiliary ingredients.
- The filling process can be done manually or automatically, depending on the scale of production.
- Connecting and closing:
- The two parts of the capsule (body and lid) are joined together to form a closed whole.
- This process can be automated to ensure precise and rapid closure of capsules.
- Quality control:
- Finished capsules undergo quality control to ensure compliance with required standards.
- The inspection may include checking weight, tightness, appearance and other parameters.
- Packing and packaging of dietary supplements:
- The capsules are packed in appropriate packaging (e.g. blisters, bottles, sachets).
- The ready-made packages are labeled supplements and prepared for shipment.
Types of hard capsules:
Hard capsules They can be made from a variety of materials, allowing you to tailor them to your preferences and product specifics. Whether you prefer traditional gelatin capsules, plant-based solutions (HPMC), or acid-resistant forms, it's always worth understanding the features and benefits of each type.
- Hard gelatin capsules: The most popular type of capsule, made from animal-derived gelatin. It dissolves quickly in the stomach and is widely available on the market.
- Hard vegetable capsules (HPMC): An animal-free alternative, ideal for vegans and vegetarians. HPMC capsules are neutral in taste and stable even at lower humidity levels.
- Acid-resistant hard capsules: Thanks to a special protective layer, they dissolve only in the intestine, protecting the active ingredients from the effects of stomach acid. This is an excellent choice for probiotics and other sensitive formulas.
Application of hard capsules:
Hard capsules are commonly used in the production of dietary supplements and medications. They provide precise dosing, are easy to swallow, and have a neutral taste and smell, making them a popular choice among patients and consumers.
Examples of uses for hard capsules:
Multivitamin and mineral
The combination of vitamins and minerals in one hard capsule enables convenient supplementation, saving space in the medicine cabinet and facilitating regular use by the consumer.Herbal preparations
Plant extracts with intense flavors or aromas are encapsulated, minimizing discomfort during ingestion. Hard capsules help protect the herbs from moisture and UV rays.Probiotics and prebiotics
Thanks to acid-resistant technology, sensitive probiotic bacteria can pass through the stomach and reach the intestines, which increases the product's effectiveness.
Hard capsules are also suitable for many other categories of dietary supplements and pharmaceutical products, from sports and vitamin products to specialized preparations tailored to the needs of specific customer groups.
Production of hard gelatin capsules
Hard capsule production gelatin This is done using the immersion method. It involves dipping special plungers into a gelatin solution, then drying, removing, and sealing the capsules. These capsules consist of two cylindrical parts: a base and a cap, which are typically made of gelatin or alternative plant materials such as HPMC.
Hard gelatin capsule production process:
- Immersion: Metal pins of appropriate shape are immersed in a heated gelatin solution.
- Turning and drying: The pins are rotated to evenly distribute the gelatin and form the capsule walls. They are then dried under controlled conditions.
- Removal and trimming: After drying, the capsules are removed from the mandrels and cut to the appropriate length.
- Connecting and quality control: The capsule body and lid are assembled and the finished capsules are subjected to quality control.
Advanced aspects and unique technologies used in hard capsules:
- Band-sealing: To prevent tampering and improve stability, a gelatin or cellulose band can be applied to the joint between the two halves of the hard capsule. This is crucial for potent drugs and premium products.
- Enteric-coated hard capsules: They are coated with a special polymer layer that is resistant to stomach acid. This allows the hard capsule to dissolve only in the small intestine, protecting the active ingredient (e.g., probiotics, enzymes) from destruction or stomach irritation.
- Hygroscopicity problem: Both gelatin and HPMC (vegetable capsules) are sensitive to moisture. Hard gelatin capsules can become brittle at low humidity and sticky at high humidity. Material selection and production/storage conditions are critical for moisture-sensitive substances.
- Electrostatic charges: Powders can generate electrostatic charges during automatic filling, making precise dosing difficult. Manufacturers use special lubricants (e.g. silicon dioxide) or ionizing systems to neutralize this effect.
- Capsule-in-capsule technology: An advanced delivery system where a smaller, pre-filled hard capsule is placed inside a larger, outer capsule. This allows for the separation of incompatible ingredients or a two-phase release of the substance.
Additional information about hard capsules:
- Hard capsules can be filled with various substances, such as powders, granulates, liquids or pellets.
- They are often used in the production of dietary supplements, but can also be used in the pharmaceutical industry.
- Hard capsules They are easy to swallow and have a neutral taste, which is their advantage.
- They can be colored and printed, making them easier to identify.
- Hard Capsule Production can be implemented within the framework of contract production of dietary supplements, where an external company manufactures the capsules on request.
- It is worth adding that the production hard capsules requires appropriate equipment and compliance with hygiene rules to ensure high product quality and consumer safety.
Fun fact: The history of using alternatives to gelatin
Interesting fact: Capsules that protect the intestinal microbiota
Fun fact: Static effect in capsule production
Materials Used in the Production of Hard Capsules
Gelatine
Traditionally hard capsules are made from animal gelatin, mainly obtained from collagen in the skin and bones of cattle or pigs. Gelatin is a material:
- Biodegradable and biocompatible: Well tolerated by the human body.
- Flexible and durable: It allows for the formation of thin but durable capsule walls.
- Soluble in gastric juice: It enables rapid release of the active substance after ingestion.
Alternative Materials
In response to the needs of people with dietary restrictions and religious requirements, capsules made from plant materials were developed:
- Hydroxypropylmethylcellulose (HPMC): A cellulose derivative, free from animal components, stable in various pH conditions.
- Pullulan: A polysaccharide obtained from the fermentation of starch by fungi; characterized by high transparency and resistance to oxygen.
- Modified starch: Used to produce slowly dissolving or delayed release capsules.
Thanks to the variety of materials, hard capsules can be precisely tailored to the nutritional requirements of consumers, the nature of the active ingredients and your brand preferences. By choosing the right material, you gain control over release, aesthetics and compliance with dietary standards.
Comparison of Materials Used in the Production of Hard Capsules
| Composition | Origin | Advantages | Disadvantages | Destiny |
|---|---|---|---|---|
| Gelatine | Animal (skin, bones) | Biodegradable, biocompatible, soluble in gastric juice | Sensitive to moisture, not suitable for vegans | Traditional hard capsules |
| Hydroxypropyl methylcellulose (HPMC) | Vegetable | Stable at various pH levels, free from animal ingredients | Higher cost of production | Capsules for vegans and vegetarians |
| pullulan | Starch fermentation | High transparency, oxygen resistance | High price | Vegetable capsules |
| Modified Starch | Vegetable | Slow dissolving, delayed release | Limited stability in some conditions | Delayed release formulations |
Contract manufacturing of hard capsules with IOC
Key strengths hard capsules produced by IOC sp. z o. o. focus on their unmatched quality, precision of workmanship and efficiency in delivering active ingredients.
International Organic Company (IOC) since 2009 specializes in production of hard capsules and more. As leader in the industry, we offer the highest quality products, confirmed by international standards ISO and GMP certificates. Our 15 years of experience on the global market guarantees reliability and innovation.
Jako renowned manufacturer hard capsules, our company IOC operates in a modern production plant in Poland. We apply international GMP and ISO 22000 standards, thanks to which we deliver products of the highest quality and safety.
Contract manufacturing of hard capsules to the process of producing capsules, which are a popular form of dosing medications and dietary supplements. Complete the production process of a hard capsule supplement involves the creation of an empty, two-part shell by immersing special forms in a solution, drying and cutting them, and then filling it, which involves opening, precisely dosing the substance and finally, tightly closing it.
Hard Capsule Production – Incooperation step by step
Contract manufacturing of hard capsules This comprehensive, transparent workflow allows for the effective implementation of your dietary supplement project. From initial contact to final production and delivery, we provide full support at every stage.
- Contact and needs analysis: We start with a consultation, during which we determine your requirements and expectations.
- Recipe development: Our R&D laboratory prepares the prototype and adjusts the composition using the latest technologies.
- Testing and Validation: The prototype is undergoing quality and stability testing to meet GMP and ISO standards.
- Contract production: Once approved, we begin mass production, guaranteeing the uniformity and high quality of each batch.
- Delivery and support: We ensure timely order fulfillment and full logistical support.
Our approach ensures that every stage of cooperation is transparent and tailored to individual needs, allowing you to focus on developing your brand.
Opinions and implementations
Our past accomplishments speak for themselves. Check out what our clients say and see examples of successful collaborations that confirm our expertise in supplement production.
"Thanks to your cooperation, our supplement line has reached a new level of quality. Professional approach and full support at every stage of the project made us feel safe and appreciated."
"Realizations at the highest level. Thanks to your modern solutions and experience, we have gained a partner we can rely on. We recommend you to anyone who values quality and precision."
IOC does not have any dietary supplements on the market under its own brand. All implementations belong to our clients based on NDA agreements."Realizations at the highest level. Thanks to your modern solutions and experience, we have gained a partner we can rely on. We recommend you to anyone who values quality and precision."
Express quote for the production of your Dietary Supplement
Hard Capsule Sizes
Hard capsules are available in various sizes, from 000 (the biggest) to 5 (smallest). The choice of size depends on the volume and density of the active substance and the intended dose.
| Capsule Size | Capacity (ml) | Application |
|---|---|---|
| 000 | 1.37 | Large doses of medications and supplements, less frequently used due to difficulty swallowing. |
| 00 | 0.95 | Most commonly used, suitable for high doses. |
| 0 | 0.68 | Universal, used in dietary supplements and medicines. |
| 1 | 0.5 | Smaller doses of the substance, suitable for children. |
| 2 | 0.37 | For small doses of medications, easy to swallow. |
| 3 | 0.3 | For minimal doses, easiest to swallow. |
| 4 | 0.2 | Very small doses, specialized use. |
| 5 | 0.13 | The smallest capsules available, used in pediatrics or for microdoses. |
Quality Standards Used in the Production of Hard Capsules
Hard Capsule Production must meet strict quality standards set by pharmacopoeias and regulatory authorities:
- Mass Uniformity: Capsule weight variations must be within certain limits.
- Solubility and Release: Capsules must meet requirements regarding disintegration time and release profile of the active substance.
- Microbiological Purity: Materials used to manufacture capsules must be free from microbiological contamination.
| Norma | Description |
|---|---|
| Mass Uniformity | Capsule weight variations must be within certain limits. |
| Solubility and Release | Capsules must meet requirements regarding disintegration time and release profile of the substance. |
| Microbiological purity | Materials used for production must be free from microbiological contamination. |
Hard capsules vs. tablets and soft capsules
| Comparison | Hard capsules | Tablets | Soft gelatin capsules |
|---|---|---|---|
| Composition | Powder or granules, enclosed in a hard gelatin shell | Compressed powder or granules | Liquids or semi-solids in elastic gelatin |
| Release | Rapid release in the digestive system | Slower release, solubility dependent | Quick release, especially for liquids |
| Advantages | Easy to swallow, no distinct taste | Possibility of dividing and precise dosing | Perfect for liquid substances, gentle on the digestive tract |
| Disadvantages | You can't always figure them out; not suitable for vegans | Unpleasant taste, slower absorption | More expensive to produce, may be difficult to swallow for some |
Fun fact: The secret to wall thickness uniformity
Interesting fact: Hard capsules in inhalers
Interesting fact: The impact of UV lighting on the durability of capsules
Fun fact: The phenomenon of "encapsulation in a capsule"
Frequently asked questions (FAQ)
Below we answer the most frequently asked questions about hard capsules. The content is also enriched with structured data (schema FAQ), which can make it easier for Google to display these questions in search results.
1. Are hard capsules suitable for any type of supplement?
In most cases, yes. Hard capsules are versatile and protect the active ingredients from moisture and light. If your formula requires additional protection from stomach acid, consider acid-resistant capsules.
2. What is the difference between gelatin capsules and vegetable capsules (HPMC)?
Gelatin capsules are made from animal gelatin and dissolve quickly in the stomach. Capsules, on the other hand, HPMC (plant-based) do not contain animal ingredients, are suitable for vegans and vegetarians, and have a neutral taste.
3. What is the minimum order quantity?
This depends on the type of capsule and the composition of the supplement. We offer flexible starting batches (e.g., several thousand units), but we also process bulk orders for larger brands.
4. Is it possible to dye and print on capsules?
Yes. You can customize the color of the capsules and add prints (e.g., logo, brand name) to make your product stand out from the competition.
To learn more about supplement production and additional opportunities, we encourage you to review the materials below.