Question:
Manucol is also known as
Manucol is also known as
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Sodium alginate (Manucol) is widely used in formulations requiring gel formation and sustained release due to its biocompatibility and non-toxicity.
Updated On: Jul 14, 2026
- Sodium alginate
- Alginic acid
- Carbopol
- Guargum
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The Correct Option is A
Approach Solution - 1
Manucol is a brand name commonly used for sodium alginate, which is a salt of alginic acid derived from brown seaweed. Sodium alginate is widely used in pharmaceutical formulations as a gelling agent, thickener, stabilizer, and viscosity enhancer. It is especially important in antacid and wound dressing products due to its gel-forming properties upon contact with water or gastric acid.
Key points about sodium alginate (Manucol):
- It forms a viscous gum or gel in aqueous solutions.
- Used in controlled release formulations, topical gels, and as an excipient in tablets and suspensions.
- Differs from alginic acid, which is the acidic precursor and less soluble.
Other options:
- Alginic acid is the acid form, not the sodium salt.
- Carbopol is a synthetic polymer used as a thickening agent, not related to alginates.
- Guar gum is a different natural polysaccharide from guar beans, used as a thickener.
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Approach Solution -2
Manucol is an industrial brand name, and questions like this test whether a student can connect trade names used in manufacturing to the actual chemical substance behind them. Working through what each option actually is settles which one Manucol refers to.
- Sodium alginate: Sodium alginate is the sodium salt of alginic acid, extracted from brown seaweed and sold industrially under several trade names, including Manucol, Kelcosol, and Protanal. It dissolves in water to form a viscous solution, which is why it is used as a thickener, stabilizer, and gelling agent in tablets, suspensions, and wound dressings.
- Alginic acid: Alginic acid is the parent acid form before it is neutralized into a sodium salt. It is far less soluble in water than its sodium salt, and it is not the substance marketed under the Manucol name.
- Carbopol: Carbopol is a synthetic, cross-linked polyacrylic acid polymer, unrelated in origin and chemistry to seaweed-derived alginates. It is used as a thickening and suspending agent but has no connection to the Manucol brand.
- Guargum: Guar gum is a polysaccharide obtained from guar bean seeds, a completely different plant source from brown seaweed. It functions as a thickener too, but it is marketed under different trade names, not Manucol.
Tracing the Manucol brand back to its manufacturer's product line shows it corresponds to the sodium salt of alginic acid derived from seaweed.
So the correct answer is Sodium alginate.
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