Description
Sorbitol solution is a liquid preparation containing sorbitol, a sugar alcohol used primarily as a laxative to treat occasional constipation. It’s a hyperosmotic agent, which means it works by drawing water into the large intestine from surrounding tissues. This softens the stool, increases pressure, and stimulates bowel movements.
Basic Chemical Information
| Chemical name: | D-glucitol (Sorbitol) |
| Chemical formula | C₆H₁₄O₆ |
| Molar mass: | 182.17 g/mol |
| Concentration: | 70% w/w aqueous solution |
| Solubility: | Miscible with water and glycerol; slightly soluble in ethanol |
| Melting point (pure sorbitol | ~95–100°C |
| Appearance: | Clear, colorless to slightly yellow viscous liquid |
| Odor: | Odorless |
| Density: | ~1.285–1.300 g/mL at 20°C |
| Boiling point: | >100°C (due to water content) |
Primary Uses
Laxative: Sorbitol solution is a common over-the-counter and prescription laxative. It’s available as an oral solution or enema and is generally used for short-term relief of constipation.
Pharmaceutical Excipient: Sorbitol is a versatile ingredient in many medications. As a solution, it acts as a:
Sweetener: Provides a sweet taste without contributing to dental decay, making it suitable for diabetic and pediatric formulations.
Humectant: Helps retain moisture, preventing products like lozenges and tablets from drying out.
Stabilizer: Improves the texture and consistency of liquid medicines.
Treating Constipation: Sorbitol is a hyperosmotic laxative. When taken orally or as an enema, it draws water into the large intestine, which softens the stool and stimulates bowel movements. This makes it easier to pass, providing relief from occasional constipation.
Urologic Irrigation: In a medical setting, a sorbitol solution can be used to rinse the bladder during certain surgical procedures, such as transurethral procedures. This helps provide a clear view for the surgeon.
Pharmaceutical Excipient: Sorbitol is an inactive ingredient (excipient) in many medications. In this role, it acts as a:
Sweetener to improve the taste, especially in liquid medicines for children or those with diabetes.
Humectant to keep products like tablets and lozenges from drying out.
Stabilizer to maintain the texture and consistency of the medicine.
While sorbitol is also used as a sugar substitute in the food industry, sorbitol solution is most commonly associated with its medical applications, particularly as a laxative. It is important to note that it should be used for short-term relief of constipation, as prolonged use can lead to dependency and other health issues.
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