Frequently Asked Questions

StellarCaps primarily provides two major product lines: Empty Gelatin Capsules and Empty HPMC Vegetable Capsules. We are a professional manufacturer of high-quality empty hard capsules. Empty gelatin capsules are made from high-quality pharmaceutical bone gelatin, suitable for most pharmaceutical preparations; vegetable capsules are derived from plant cellulose, especially suitable for traditional Chinese medicine, probiotics, and moisture-sensitive products.

Capsule capacity generally decreases from size 00 (00#) through size 4 (4#). Selection mainly considers content fill weight requirements: typically size 00 (00#) holds approximately 500-950mg, size 0 (0#) approximately 350-680mg, size 1 (1#) approximately 250-500mg, size 2 (2#) approximately 180-370mg, size 3 (3#) approximately 150-300mg, and size 4 (4#) approximately 100-210mg. Actual fill weight also relates to content bulk density. For more detailed specification parameters and selection recommendations, please view the Capsule Sizes page.

Yes. StellarCaps provides extensive color options, including transparent, translucent, and various solid color capsules. Custom colors must meet pharmaceutical colorant safety requirements, and we provide complete compliance documentation for each custom color. Learn more about branding customization in our article How to Enhance Product Recognition Through Customized Capsules?

Yes. We provide axial printing, circumferential printing, and dual-color printing services, which can print pharmaceutical manufacturer logos, product specifications, anti-counterfeiting codes, and other information. Printing uses special inks that meet pharmaceutical standards, with clear text and strong adhesion. If you have printing needs, please contact us through Contact Us for technical support.

For standard size capsules, the minimum order quantity is typically 100,000 capsules. For custom color or printed capsules, the MOQ may vary based on specific requirements. For long-term partnership customers, we can provide more flexible ordering options. To learn about our product lines, please visit the Products page.

Under proper storage conditions (temperature 15-25°C, relative humidity 35-65%), both empty hard capsules - empty gelatin capsules and empty HPMC capsules - have a shelf life of 36 months. We recommend using within the shelf life to maintain expected performance. For moisture-sensitive products, we recommend considering HPMC Vegetable Capsules, whose low moisture characteristics help maintain preparation stability.

Yes. StellarCaps provides OEM and contract manufacturing support for global pharmaceutical, nutraceutical, and health supplement companies. Support can include custom formulation discussions, private label packaging, batch manufacturing, and quality control documentation according to confirmed project requirements.

Our OEM service offers several key advantages: 1) Complete manufacturing facilities with annual production capacity of 20 billion capsules; 2) Comprehensive quality control and regulatory documentation; 3) Flexible production runs to accommodate different order sizes; 4) Technical support for formulation and capsule selection; 5) Private label and branding customization options. Contact us to discuss your specific OEM requirements.

Getting started with our OEM service is simple: 1) Contact our OEM team through Contact Us; 2) Share your product specifications, target market, and volume requirements; 3) Request samples for testing and approval; 4) Review and sign manufacturing agreement; 5) Begin production with our quality-controlled manufacturing process. Our OEM specialists will guide you through every step.