Relief in as little as 30 minutes*.

When you need gentle and fast relief of occasional constipation, in as little as 30 minutes, reach for Dulcolax Liquid.

  • *Works in 30 minutes to 6 hours
  • Contains magnesium hydroxide, which draws water into the colon to help stool to pass
  • Works naturally with your body
  • Stimulant and Gluten Free

Dulcolax Liquid works naturally with the water in your body (stimulant free) to provide gentle relief in as little as 30 minutes (30 minutes to 6 hours).

Dulcolax Liquid works faster than Miralax. Dulcolax works in as little as 30 minutes (30 minutes to 6 hours), Miralax works in 1-3 days. The magnesium hydroxide works naturally with your body by drawing fluids into the intestine from the surrounding tissues, resulting in softer stools that are easier to pass.

Doctors typically advise parents to try lifestyle changes first, like eating fiber-rich foods (particularly fruits and vegetables), exercising regularly and increasing fluid intake. If these don’t work, please consult a doctor.

If you need to use for more than 7 days, please discuss with your doctor.

Active ingredient (in each 15 mL)

Magnesium hydroxide USP 1200 mg


Saline Laxative


  • for relief of occasional constipation and irregularity
  • this product generally produces bowel movement in 1/2 to 6 hours


Ask a doctor before use if you have

  • kidney disease
  • a magnesium-restricted diet
  • stomach pain, nausea or vomiting
  • noticed a sudden change in bowel habits that lasts more than 2 weeks

Ask a doctor or pharmacist before use if you are taking a prescription drug.

  • This product may interact with certain prescription drugs

Stop use and ask a doctor if

  • you have rectal bleeding or fail to have a bowel movement after using this product. These could be signs of a serious condition.
  • you need to use a laxative for more than 1 week

If pregnant or breast-feeding

  • ask a health professional before use.

Keep out of reach of children

  •  In case of overdose, get medical help or contact a Poison Control Center right away 


  • shake well immediately before each use
  • for accurate dosing, use convenient pre-measured dose cup
  • drink a full glass (8 oz) of liquid with each dose
  • dose may be taken as a single daily dose or in divided doses
  • do not exceed the maximum recommended daily dose in a 24 hour period

    Adults and children 12 years of age and over

    30 mL to 60 mL

    Children 6 to under 12 years of age

    15 mL to 30 mL

    Children 2 to under 6 years of age

    5 mL to 15 mL

     Children under 2 years of age

    ask a doctor.

Other information

  • Each 15 mL contains: calcium 20 mg, magnesium 595 mg, potassium 5 mg, sodium 3 mg
  • Do not use if safety seal is broken or missing
  • Close cap tightly after each use
  • Store at room temperature 20° - 25°C (68° - 77°F)

Inactive Ingredients:

Anhydrous citric acid, D&C red #28, flavor, glycerin, purified water, sorbitol, sucrose, xanthan gum.