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Brand & Generic Names

Bisac-Evac Dulcodos
Bisacolax Dulcolax
Bisco-Lax Fleet Bisacodyl
Carter's Little Pills Fleet Bisacodyl Prep
Clysodrast Fleet Laxative
Dacodyl Laxit
Deficol Theralax

Basic Information

  • Habit forming? No
  • Prescription needed? No
  • Available as generic? Yes
  • Drug class: Laxative (stimulant)


    Constipation relief.

Dosage & Usage Information

How to take:
Follow package instructions.
Tablet--Swallow with liquid, do not crush.
Suppository--Remove wrapper and moisten suppository with water. Gently insert larger end into rectum. Push well into rectum with finger. Retain in rectum 20-30 minutes.

When to take:
Usually at bedtime with a snack, unless directed otherwise.

If you forget a dose:
Take as soon as you remember.

What drug does:
Acts on smooth muscles of intestine wall to cause vigorous bowel movement.

Time lapse before drug works:
6 to 10 hours.

Don't take with:
Any other medicine without consulting your doctor or pharmacist.
Don't take within 2 hours of taking another medicine. Laxative interferes with medicine absorption.


Vomiting, electrolyte depletion.


    Overdose unlikely to threaten life. If person takes much larger amount than prescribed, call doctor, poison-control center or hospital emergency room for instructions.

Possible Adverse Reactions or Side Effects


    None expected.


    Rectal irritation.


  • Dangerous potassium loss (thirst, weakness, heartbeat irregularity, paralysis, nausea and diarrhea).
  • Belching, cramps, nausea.


  • Irritability, headache, confusion, rash, breathing difficulty, irregular heartbeat, muscle cramps, unusual tiredness or weakness.
  • Burning on urination.

Warnings & Precautions

Don't take if:

  • You have symptoms of appendicitis, inflamed bowel or intestinal blockage.
  • You are allergic to a stimulant laxative.
  • You have missed a bowel movement for only 1 or 2 days.

Before you start, consult your doctor:

  • If you have a colostomy or ileostomy.
  • If you have congestive heart disease.
  • If you have diabetes.
  • If you have high blood pressure.
  • If you have a laxative habit.
  • If you have rectal bleeding.
  • If you take other laxatives.

Over age 60:
Adverse reactions and side effects may be more frequent and severe than in younger persons.

Risk to mother and unborn child outweighs drug benefits. Don't use.

Drug passes into milk. Avoid drug or discontinue nursing until you finish medicine. Consult doctor for advice on maintaining milk supply.

Infants & children:
Use only under medical supervision.

Prolonged use:
Don't take for more than 1 week unless under doctor's supervision. May cause laxative dependence.

Skin & sunlight:
No problems expected.

Driving, piloting or hazardous work:
No problems expected.

May be unnecessary to finish medicine. Follow doctor's instructions.

Don't take to "flush out" your system or as a "tonic."

Possible Interaction with Other Drugs

------------------------ -----------------------
Antacids* Tablet coating may dissolve too
rapidly, irritating stomach or
Antihypertensives* May cause dangerous low potassium
Cimetidine Stomach or bowel irritation.
Diuretics* May cause dangerous low potassium
Famotidine Stomach or bowel irritation.
Ranitidine Stomach or bowel irritation.

Possible Interaction with Other Substances

--------------- ---------------
Alcohol: None expected.
Beverages: None expected.
Cocaine: None expected.
Foods: None expected.
Marijuana: None expected.
Tobacco: None expected.

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