Docusate is the common chemical and pharmaceutical name of the anion bis sulfosuccinate, also commonly called dioctyl sulfosuccinate. Salts of this anion, especially docusate sodium, are widely used in medicine as an emollient laxative and as stool soften + some more technical info. Chemically, docusate is a sulfosuccinate surfactant with two alkyl ester chains that provide surfactant and wetting activity; the sodium, calcium and potassium salts differ only in counterion and physical properties while sharing the same anionic bis sulfosuccinate moiety. In pharmaceutical formulations docusate acts by reducing surface tension of intestinal contents, increasing water penetration into the stool and easing passage, and it is formulated as oral capsules, liquid solutions and rectal preparations. Pharmaceutical-grade material is characterized by assay of the active anion, low water content, controlled residual solvents and limits on related esters and free acid; typical physicochemical notes include viscous, oily appearance for the sodium salt and good compatibility with common excipients used in OTC and prescription laxative products.
Parent: Docusate sodium
Parent: Docusate
Parent: Docusate / Docusate Sodium
Parent: Docusate
Parent: Docusate
Typical pharmaceutical quality control for docusate active ingredient and finished dosage forms monitors related compounds and impurities with specification ranges established by manufacturers and pharmacopeial monographs. Common related substances include the free sulfosuccinic acid, monoester species, higher esters and unreacted alcohols from synthesis, with individual impurity limits commonly set at about 0.5 to 1.0 percent for specified impurities and a total unspecified impurities limit commonly in the 1.0 to 2.5 percent range; assay acceptance for the active docusate anion is often in the high 90 percent range depending on salt form and method. Other routine limits include water content usually below 1 to 2 percent, residual solvents controlled per ICH guidance (for example methanol and isopropanol typically limited to parts per million levels), and heavy metals limited to low ppm levels, commonly not more than 20 ppm. Related commercially encountered salts are docusate sodium, docusate calcium and docusate potassium and analytical testing typically identifies and quantifies these and minor esterified byproducts so manufacturers can demonstrate compliance with stability and purity requirements.
Docusate is used as an emollient stool softener to relieve constipation by increasing water penetration into feces and lowering surface tension so stools retain moisture and pass more easily. It is indicated for occasional constipation and for patients who should avoid straining, such as post-operative patients or those with hemorrhoids.
Dosing depends on formulation and age. For adults and children 12 years and older common OTC dosing of docusate sodium is 50 to 300 mg per day, usually taken once or in divided doses, with some regimens allowing up to 400 mg per day under medical supervision. Pediatric dosing is lower and product labeling should be followed; consult a healthcare professional before giving to young children or using higher than recommended doses.
Yes. Colace is a widely recognized brand name for docusate sodium. The active ingredient in Colace is docusate sodium, so generic docusate sodium products provide the same active compound though excipients and dosage forms may differ.
Docusate typically produces a bowel movement within 12 to 72 hours after oral administration, with many users noting effects around 24 to 48 hours. Rectal formulations can act more quickly. If no effect is seen within 72 hours or if severe symptoms occur, consult a healthcare professional.
