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Hypromellose (HPMC) white capsules are popular vegetarian, plant-based alternatives to gelatin capsules, derived from wood pulp or cotton fiber. These capsules are widely used in the pharmaceutical and nutraceutical industries to encapsulate medications and supplements, with the white color often achieved using opacifiers like calcium carbonate or titanium dioxide.
Key Characteristics and Benefits:
- Vegetarian/Vegan: 100% plant-based and free from animal products, making them suitable for kosher and halal requirements.
- Low Moisture Content: They have a low moisture content (typically 3%–8%), which makes them ideal for hygroscopic (moisture-sensitive) ingredients like probiotics and enzymes.
- Stability: HPMC capsules are stable over a wide range of temperature and humidity conditions, resisting cross-linking.
- Safety: They are considered non-toxic, non-allergenic, and "Generally Recognized As Safe" (GRAS) by the FDA.
- Appearance: They have a matte finish and can be opaque or transparent.
