Carrageenan is a good substitute for gelatin (animal-based product) in hard and soft gel capsules. Theincorporation in glycerin-water mixture masks the chalkiness of antacid gels.

Marcel carrageenan functions in pharmaceutical products as follows:

1. gives stable emulsions for insoluble drug preparations
2. enhances homogeneity in colloidal suspension
3. film forming agent in crystal clear soft capsules ( vegetable origin)
4. acts as gelling agent in antacid gels
5. improves shelf stability
6. prolongs shelf life of antibiotic suspension

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