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What Is Senokot?

Senokot is an over-the-counter laxative brand associated with sennosides, stimulant laxative compounds derived from senna plants. Regular Senokot tablets contain 8.6 mg of sennosides per tablet and are used for short-term relief of occasional constipation. The product stimulates movement in the large intestine and generally produces a bowel movement within six to 12 hours. Other products in the Senokot family have different formulations. For example, Senokot-S combines sennosides with docusate sodium, a stool softener. Consumers should check the active ingredients and strength on the specific package rather than assuming all Senokot products have identical instructions.

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What Is Senokot?

Senokot is an over-the-counter laxative brand associated with sennosides, stimulant laxative compounds derived from senna plants. Regular Senokot tablets contain 8.6 mg of sennosides per tablet and are used for short-term relief of occasional constipation. The product stimulates movement in the large intestine and generally produces a bowel movement within six to 12 hours. Other products in the Senokot family have different formulations. For example, Senokot-S combines sennosides with docusate sodium, a stool softener. Consumers should check the active ingredients and strength on the specific package rather than assuming all Senokot products have identical instructions.

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How Does Senokot Work?

Regular Senokot contains sennosides that are converted into active compounds by bacteria in the large intestine. These compounds stimulate intestinal movement and influence water and electrolyte transport, helping move stool through the colon. The medication generally begins producing results within six to 12 hours. Senokot-S contains the same stimulant laxative ingredient along with docusate sodium, which acts as a stool softener. The added ingredient changes the formulation but does not eliminate the need to follow short-term laxative precautions. Senokot relieves occasional constipation without correcting its underlying cause, which may require separate evaluation or treatment.

What Condition Does Senokot Treat?

Regular Senokot is intended for temporary relief of occasional constipation, which may involve infrequent bowel movements or difficulty passing stool. Senokot-S is also labeled for occasional constipation and combines a stimulant laxative with a stool softener. Neither product is intended to treat bowel obstruction, unexplained severe abdominal pain, or persistent changes in bowel habits without medical evaluation. Patients who experience constipation related to dietary changes, travel, or other temporary circumstances may use an appropriate over-the-counter product according to its label. Constipation lasting longer than expected, rectal bleeding, or a failure to pass stool after laxative use requires medical assessment.

How Should Senokot Be Taken?

Regular Senokot tablets containing 8.6 mg of sennosides are taken orally, preferably at bedtime. Adults and children aged 12 years and older commonly begin with two tablets once daily. The labeled maximum is four tablets twice daily. Children aged six through 11 years generally begin with one tablet daily, while younger children require lower doses or medical advice according to their age. Senokot-S and other formulations have their own instructions and should not be assumed interchangeable. Patients should drink adequate fluids and follow the dosing limits on their package. Do not use Senokot for more than one week without a clinician's direction, even if constipation continues.

What Are the Side Effects and Warnings of Senokot?

Common adverse effects include abdominal cramps, stomach discomfort, nausea, and diarrhea. Excessive laxative use may cause dehydration, electrolyte imbalances, and disturbances in normal bowel function. Senokot should not be used for longer than one week unless a healthcare professional directs treatment. Patients should ask a clinician before use if they have abdominal pain, nausea, vomiting, or a sudden change in bowel habits lasting two weeks. Rectal bleeding or failure to have a bowel movement after taking a laxative can signal a serious condition. Senokot-S also contains docusate sodium and should not be used with mineral oil unless directed by a clinician. Pregnant or breastfeeding patients should seek medical advice before use.

Common Questions About Senokot

Is Senokot the same as senna?

Regular Senokot contains sennosides derived from senna plants. It is a branded stimulant laxative used for occasional constipation.

What is the difference between Senokot and Senokot-S?

Regular Senokot contains sennosides. Senokot-S combines sennosides with docusate sodium, a stool softener.

How long does Senokot take to work?

Senokot generally produces a bowel movement within six to 12 hours, so it is commonly taken at bedtime.

Can Senokot be used for chronic constipation?

Senokot is labeled for short-term relief of occasional constipation. Using it beyond one week requires medical direction and an assessment of persistent symptoms.

References

DailyMed - SENOKOT (standardized senna concentrate) tablet. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=c18dd7fa-993b-440b-8cdd-f1551abb99ca. Date Accessed November 6, 2026.

DailyMed - SENOKOT (standardized senna) tablet. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=0c6e6bdd-9f49-4550-b60a-8f58b7c0f090. Date Accessed November 6, 2026.

Senna. LiverTox. https://www.ncbi.nlm.nih.gov/books/NBK547922/. Date Accessed November 6, 2026.

Senna. MedlinePlus. https://medlineplus.gov/druginfo/meds/a601112.html. Date Accessed November 6, 2026.

Sennosides. PubChem. https://pubchem.ncbi.nlm.nih.gov/compound/Sennoside-A. Date Accessed November 6, 2026.