Storing enteric capsules properly is crucial to maintain their quality, efficacy, and safety. As a supplier of enteric capsules, I've seen firsthand how improper storage can lead to issues like capsule degradation, reduced drug potency, and even potential health risks for end - users. In this blog, I'll share some key tips on how enteric capsules should be stored.
Understanding Enteric Capsules
Before we dive into the storage details, let's quickly go over what enteric capsules are. Enteric capsules are designed to resist dissolution in the acidic environment of the stomach. Instead, they dissolve in the more alkaline environment of the small intestine. This is super important for drugs that are sensitive to stomach acid or that need to be released at a specific location in the digestive tract. We offer a variety of enteric capsules, including the Hard Gelatin Capsule Shell, Medical Gelatin Hollow Capsule, and Medical Gelatin Capsule Shell, all of which require proper storage to function as intended.
Temperature Control
One of the most important factors in storing enteric capsules is temperature. These capsules are sensitive to temperature changes, and extreme heat or cold can have a negative impact on their integrity.
- Avoid High Temperatures: High temperatures can cause the capsule shells to soften, deform, or even melt. This can lead to premature release of the drug or a change in its dissolution rate. For example, if enteric capsules are stored in a hot warehouse or a car on a sunny day, the heat can damage the capsules. The ideal storage temperature for most enteric capsules is between 20°C and 25°C (68°F - 77°F).
- Prevent Freezing: On the other hand, freezing temperatures can also be a problem. When capsules freeze, the water inside them can expand, causing the capsule shells to crack. Once the capsules are damaged, the drug may be exposed to the stomach acid prematurely, reducing its effectiveness. So, make sure to store enteric capsules in a place where the temperature doesn't drop below freezing.
Humidity Management
Humidity is another critical factor in enteric capsule storage. Excess moisture can cause the capsules to stick together, become brittle, or promote the growth of mold and bacteria.
- Keep it Dry: The recommended relative humidity for storing enteric capsules is between 30% and 60%. You can use a dehumidifier in the storage area to control the humidity level. If the storage space is too humid, the capsules may absorb moisture from the air, which can lead to changes in their physical properties. For example, the capsule shells may become soft and gummy, making them difficult to handle.
- Use Desiccants: Desiccants are substances that absorb moisture. You can place desiccants in the storage containers with the enteric capsules to help keep them dry. Silica gel packets are a common type of desiccant used in the pharmaceutical industry. Just make sure to replace the desiccants regularly to ensure their effectiveness.
Light Protection
Enteric capsules should also be protected from light. Ultraviolet (UV) light can break down the active ingredients in the capsules and cause chemical changes in the capsule shells.
- Store in Dark Containers: Use opaque containers to store enteric capsules. These containers can block out light and protect the capsules from UV damage. If the capsules are stored in clear or translucent containers, they should be kept in a dark place, such as a cabinet or a drawer.
- Avoid Sunlight Exposure: Direct sunlight can be especially harmful to enteric capsules. Make sure to store the capsules away from windows or other sources of direct sunlight. Even artificial light, such as fluorescent lights, can have a negative impact on the capsules over time, so it's best to minimize their exposure to light as much as possible.
Storage Location
The location where you store enteric capsules is also important.


- Choose a Clean and Ventilated Area: The storage area should be clean and free from dust, dirt, and other contaminants. Good ventilation is also necessary to prevent the buildup of moisture and odors. A well - ventilated storage area can help maintain the proper temperature and humidity levels for the capsules.
- Separate from Other Substances: Enteric capsules should be stored separately from other substances, especially those that are volatile or have strong odors. Some chemicals or substances can interact with the capsules and affect their quality. For example, if enteric capsules are stored near solvents or cleaning agents, the fumes from these substances can penetrate the capsule shells and contaminate the drug inside.
Packaging Integrity
The packaging of enteric capsules plays a significant role in their storage.
- Check Seals Regularly: Make sure the packaging of the enteric capsules is properly sealed. A damaged or loose seal can allow moisture, air, and contaminants to enter the package, which can compromise the quality of the capsules. Regularly inspect the packages for any signs of damage, such as tears or holes.
- Use Original Packaging: Whenever possible, keep the enteric capsules in their original packaging. The original packaging is designed to provide the best protection for the capsules during storage and transportation. It usually has features like light - blocking materials, moisture barriers, and proper labeling.
Monitoring and Rotation
It's important to monitor the storage conditions of enteric capsules regularly.
- Temperature and Humidity Monitoring: Use temperature and humidity sensors to keep track of the conditions in the storage area. This will allow you to detect any changes in the environment and take appropriate action if necessary. For example, if the temperature or humidity levels are outside the recommended range, you can adjust the settings of your climate control equipment.
- First - in, First - out (FIFO) Rotation: Implement a first - in, first - out inventory management system. This means using the oldest capsules first to ensure that they don't exceed their expiration date. By rotating the stock regularly, you can reduce the risk of using expired or degraded capsules.
Conclusion
Proper storage of enteric capsules is essential for maintaining their quality and effectiveness. By controlling temperature, managing humidity, protecting from light, choosing the right storage location, ensuring packaging integrity, and monitoring and rotating the stock, you can ensure that the enteric capsules you store are in the best possible condition.
If you're in the market for high - quality enteric capsules, we're here to help. We offer a wide range of products, including Hard Gelatin Capsule Shell, Medical Gelatin Hollow Capsule, and Medical Gelatin Capsule Shell. Contact us to start a procurement discussion and find the best enteric capsule solutions for your needs.
References
- Remington: The Science and Practice of Pharmacy, 23rd Edition.
- Pharmaceutical Dosage Forms: Parenteral Medications, 4th Edition.
- Handbook of Pharmaceutical Excipients, 7th Edition.



