Are Gelatine Capsules stable under different humidity conditions?

Aug 18, 2025

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Ryan Li
Ryan Li
Head of International Sales at Healsee Capsules, focused on expanding our global market presence in Europe and North America. Always looking for new opportunities to grow our capsule business worldwide.

Hey there! As a supplier of gelatine capsules, I've been getting a ton of questions lately about how these little guys hold up under different humidity conditions. So, I thought I'd sit down and share what I've learned over the years in the biz.

First off, let's talk about what gelatine capsules are. They're basically little shells made from gelatine, a protein derived from animal collagen. These capsules are super popular in the pharmaceutical and nutraceutical industries because they're easy to swallow, can hold all sorts of substances, and are generally considered safe. You can check out our Hard Empty Gelatine Capsules for a better idea of what I'm talking about.

Now, humidity is a big deal when it comes to the stability of gelatine capsules. Why? Well, gelatine is a hygroscopic material, which means it loves to absorb moisture from the air. When the humidity is high, those capsules can soak up a lot of water, and that can lead to some problems.

One of the most common issues is softening. When gelatine capsules absorb too much moisture, they can become soft and sticky. This is a huge problem because it can make the capsules difficult to handle during the filling process. You might end up with capsules that don't close properly, or they could even stick together in the packaging. Not exactly what you want when you're trying to produce high-quality products.

Another problem is swelling. As the capsules absorb water, they can expand in size. This can throw off the dosing accuracy, which is a major no-no in the pharmaceutical world. If a capsule is supposed to hold a specific amount of medication, but it swells up and changes volume, the patient might not be getting the right dose. That's a safety issue that no one wants to deal with.

On the flip side, low humidity can also cause problems. When the air is too dry, the gelatine capsules can lose moisture. This can make them brittle and more likely to break. If a capsule breaks during handling or transportation, the contents can spill out, and you're left with a mess. Plus, broken capsules are just plain unappealing to consumers.

So, how do we keep gelatine capsules stable under different humidity conditions? Well, it all comes down to proper storage and packaging. When storing gelatine capsules, it's important to keep them in a controlled environment. That means keeping the humidity at a consistent level, usually between 30% and 60%. You can use a dehumidifier or a humidifier to maintain the right humidity, depending on the climate in your area.

Packaging is also crucial. We use special packaging materials that are designed to protect the capsules from moisture. For example, we might use foil blister packs or sealed plastic containers. These types of packaging help to create a barrier between the capsules and the outside air, reducing the risk of moisture absorption or loss.

colored vegetable capsulesVegetable Capsule

We also do a lot of testing to make sure our gelatine capsules are stable under different conditions. We'll put the capsules in chambers with different humidity levels and monitor them over time. We look for signs of softening, swelling, or brittleness, and we make adjustments to our manufacturing and packaging processes as needed.

In addition to storage and packaging, there are also some things you can do as a customer to ensure the stability of the gelatine capsules you purchase. When you receive the capsules, make sure to store them in a cool, dry place. Avoid storing them in the bathroom or near a window, where they might be exposed to high humidity or direct sunlight.

It's also a good idea to use the capsules within a reasonable amount of time. Gelatine capsules do have a shelf life, and over time, they can start to degrade, even if they're stored properly. Check the expiration date on the packaging and make sure to use the capsules before they expire.

As a gelatine capsule supplier, we take the stability of our products very seriously. We know that our customers rely on us to provide high-quality capsules that will perform well under different conditions. That's why we invest a lot of time and resources into research and development, as well as quality control.

If you're in the market for gelatine capsules, I encourage you to reach out to us. We can provide you with more information about our products, including how they perform under different humidity conditions. We can also work with you to develop a customized solution that meets your specific needs. Whether you're a small startup or a large pharmaceutical company, we're here to help you succeed.

In conclusion, gelatine capsules can be affected by different humidity conditions, but with proper storage, packaging, and testing, we can ensure their stability. As a supplier, we're committed to providing our customers with the best possible products and services. So, if you have any questions or if you're interested in purchasing our Hard Empty Gelatine Capsules, don't hesitate to get in touch. Let's work together to create high-quality products that will make a difference in the lives of your customers.

References

  • "The Science of Gelatine Capsules" - Journal of Pharmaceutical Sciences
  • "Humidity and Its Effects on Pharmaceutical Packaging" - Packaging Technology and Science
  • "Stability Testing of Gelatine Capsules" - International Journal of Pharmaceutics
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