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Related terms
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    Related terms
    • U.S. Brand Names: Black Draught® [OTC];Evac-U-Gen® [OTC];ex-lax® Maximum Strength [OTC];ex-lax® [OTC];Fleet® Pedia-LaxT Quick Dissolve [OTC];Fletcher's® [OTC];Little Tummys® Laxative [OTC];Perdiem® Overnight Relief [OTC];Senexon [OTC];SennaGen [OTC];Senokot® [OTC]
    • Mexican Brand Names: Agiolax
    • Pharmacologic Category: Laxative, Stimulant

    • This medicine is used to treat constipation.
    • Senna increases the activity of the bowel.


    How to take

    • Drink plenty of noncaffeine-containing liquid unless told to drink less liquid by healthcare provider.
    • This medicine should only be given for a short time.
    • May be taken once or twice daily as directed.
    • Take this medicine at bedtime if taking once daily.
    • Mix with juice, milk, water, or sweet foods to improve taste.

    Missed Dose

    • Take a missed dose as soon as possible.
    • If it is almost time for the next dose, skip the missed dose and return to your regular schedule.
    • Many times this medicine is taken on an as needed basis.


    • Store at room temperature.
    • Protect tablets from moisture. Do not store in a bathroom or kitchen.



    • If you have an allergy to senna or any other part of this medicine.
    • Tell healthcare provider if you are allergic to any medicine. Make sure to tell about the allergy and how it affected you. This includes telling about rash; hives; itching; shortness of breath; wheezing; cough; swelling of face, lips, tongue, or throat; or any other symptoms involved.
    • If you have any of the following conditions: Intestinal blockage, belly pain, nausea, rectal bleeding, vomiting, or change in bowel habits lasting >2 weeks.
    • If you are pregnant or may be pregnant.


    • This medicine may be habit-forming with long-term use.
    • Do not use this medicine for longer than 1 week unless directed by healthcare provider.
    • Check medicines with healthcare provider. This medicine may not mix well with other medicines.
    • Use birth control that you can trust to prevent pregnancy while taking this medicine.
    • Tell healthcare provider if you are breast-feeding.

    Side Effects

    • Belly pain.
    • Nausea or vomiting. Small frequent meals and frequent mouth care may help. Older children may suck hard, sugar-free candy.
    • Cramps.
    • Diarrhea.
    • Change in color of urine or stool.


    • Change in condition being treated. Is it better, worse, or about the same?
    • Follow up with healthcare provider.

    Contact a healthcare provider

    • If you suspect an overdose, call your local poison control center or emergency department immediately.
    • Signs of a life-threatening reaction. These include wheezing; chest tightness; fever; itching; bad cough; blue skin color; fits; or swelling of face, lips, tongue, or throat.
    • Blood in the urine.
    • Severe belly pain.
    • Severe constipation.
    • Black, tarry, or bloody stools.
    • Severe diarrhea.
    • Feeling extremely tired, weak, or irritable; trembling; having a fast heartbeat, confusion, sweating, or dizziness.
    • Unusual bruising or bleeding.
    • Any rash.
    • No improvement in condition or feeling worse.

    General Statements

    • If you have a life-threatening allergy, wear allergy identification at all times.
    • Do not share your medicine with others and do not take anyone else's medicine.
    • Keep all medicine out of the reach of children and pets.
    • Most medicines can be thrown away in household trash after mixing with coffee grounds or kitty litter and sealing in a plastic bag.
    • In Canada return any unused drugs back to the pharmacy. Also, visit for more facts about the right way to get rid of unused drugs.
    • Keep a list of all your medicines (prescription, natural products, supplements, vitamins, over-the-counter) with you. Give this list to healthcare provider (doctor, nurse, nurse practitioner, pharmacist, physician assistant).
    • Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or in Canada to Health Canada's Canada Vigilance Program at 1-866-234-2345.
    • Talk with healthcare provider before starting any new medicine, including over-the-counter, natural products, or vitamins.

    Author information
    • Copyright © 1978-2010 Lexi-Comp Inc. All rights reserved.

    Copyright © 2011 Natural Standard (

    The information in this monograph is intended for informational purposes only, and is meant to help users better understand health concerns. Information is based on review of scientific research data, historical practice patterns, and clinical experience. This information should not be interpreted as specific medical advice. Users should consult with a qualified healthcare provider for specific questions regarding therapies, diagnosis and/or health conditions, prior to making therapeutic decisions.

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