What is Pedia-Lax: Uses, Warnings & Interactions

Updated May 14, 2025  •  Published Dec 30, 2020

Pedia-Lax overview

BRAND NAMES:

  • Dulcolax Liquid, Good Neighbor Pharmacy Milk Of Magnesia, Good Sense Milk of Magnesia, Health Mart Milk Of Magnesia, Milk Of Magnesia, Pedia-Lax, Phillips' Milk of Magnesia, Quality Choice Milk of Magnesia, TopCare Milk of Magnesia, Sunmark Milk Of Magnesia, TopCare Milk of Magnesia, Sunmark Laxative Suppositories, Stratuscare, Fleet Glycerin Suppositories, Good Neighbor Pharmacy Glycerin, Leader Children's Glycerin Suppositories, Leader Glycerin Suppositories, Pedia-Lax Glycerin Suppositories

Generic Names:

  • Glycerin (Infants & Children)

Uses:

  • Treats occasional constipation by making bowel movements regular. This medicine is a laxative., Treats constipation, upset stomach, or heartburn. This medicine is a laxative and an antacid.

Therapeutic Classes:

  • Antacid, Magnesium Containing, Laxative, Laxative, Hyperosmotic, Renal-Urologic Agent, Laxative, Hyperosmotic, Laxative, Stool Softener

Forms:

  • Suppository, Tablet, Liquid, Capsule, Chewable Tablet

How it’s taken:

  • By mouth, Into the rectum

What is Pedia-Lax used for?

What form(s) does Pedia-Lax come in

  • Suppository

  • Tablet

  • Liquid

  • Capsule

  • Chewable Tablet

What are common Pedia-Lax doses?

  • Jar 12 Suppository

  • Bottle 4ML of 2.8GM

  • Bottle 30 Tablets Chewable

  • Bottle 118ML of 50MG/15ML

Common Pedia-Lax prescriptions

  • Pedia-Lax
    118ml of 50mg/15ml bottle

  • Pedia-Lax
    30 tablets chewable bottle

  • Pedia-Lax
    4ml of 2.8gm bottle

How to take Pedia-Lax

  • Your doctor will tell you how much of this medicine to take and how often. Do not take more medicine or take it more often than your doctor tells you to.

  • Do not use a laxative for longer than 1 week unless your doctor tells you to. Laxatives may be habit-forming and can harm your bowels if you use them too long or too often.

  • If you are using this medicine without a prescription, follow the instructions on the medicine label.

  • If you are using this medicine as a laxative, you must drink enough liquid. Drink a full glass (8 ounces) of water or other liquid after swallowing the medicine.

  • Measure the oral liquid medicine with a marked measuring spoon or medicine cup. Shake the medicine well just before using.

  • The chewable tablet must be chewed complete before you swallow it.

  • If you are using this medicine as a laxative, you must drink enough liquid. Drink a full glass (8 ounces) of water or other liquid after swallowing the medicine.

  • The chewable tablet must be chewed complete before you swallow it.

  • If you are using this medicine without a prescription, follow the instructions on the medicine label.

  • Your doctor will tell you how much of this medicine to take and how often. Do not take more medicine or take it more often than your doctor tells you to.

  • Do not use a laxative for longer than 1 week unless your doctor tells you to. Laxatives may be habit-forming and can harm your bowels if you use them too long or too often.

  • Measure the oral liquid medicine with a marked measuring spoon or medicine cup. Shake the medicine well just before using.

  • Your doctor will tell you how much medicine to use. Do not use more than directed.

  • Read and follow the patient instructions that come with this medicine. Talk to your doctor or pharmacist if you have any questions.

  • Rectal routeNever take rectal suppositories by mouth.

  • Rectal routeWash your hands with soap and water before and after using this medicine. Remove the foil or wrapper from the suppository before inserting it.

  • Rectal routeLie on your left side with your left leg straight or slightly bent, and your right knee bent upward. Gently push the pointed end of the suppository into the rectum about 1 inch.

  • Rectal routeKeep lying down for about 15 minutes to keep the suppository from coming out before it melts. Then, wash your hands again.

  • This medicine should cause you to have a bowel movement within 15 minutes to 1 hour.

  • Rectal routeWash your hands with soap and water before and after using this medicine. Remove the foil or wrapper from the suppository before inserting it.

  • Read and follow the patient instructions that come with this medicine. Talk to your doctor or pharmacist if you have any questions.

  • Rectal routeLie on your left side with your left leg straight or slightly bent, and your right knee bent upward. Gently push the pointed end of the suppository into the rectum about 1 inch.

  • Rectal routeNever take rectal suppositories by mouth.

  • Rectal routeKeep lying down for about 15 minutes to keep the suppository from coming out before it melts. Then, wash your hands again.

  • Your doctor will tell you how much medicine to use. Do not use more than directed.

  • This medicine should cause you to have a bowel movement within 15 minutes to 1 hour.

What to do if you miss a dose of Pedia-Lax

  • Take a dose as soon as you remember. If it is almost time for your next dose, wait until then and take a regular dose. Do not take extra medicine to make up for a missed dose.

  • Rectal routeYou may store the suppositories in the refrigerator, but do not freeze them.

  • Rectal routeAsk your pharmacist, doctor, or health caregiver about the best way to dispose of the used medicine applicator(s), containers, and any leftover medicine after you have finished your treatment. You will also need to throw away old medicine after the expiration date has passed.

  • Keep all medicine out of the reach of children. Never share your medicine with anyone.

  • If you miss a dose or forget to take your medicine, take it as soon as you can. If it is almost time for your next dose, wait until then to take the medicine and skip the missed dose.

  • Do not use extra medicine to make up for a missed dose.

  • Keep all medicine out of the reach of children and never share your medicine with anyone.

Pedia-Lax contraindications

  • You should not use this medicine if you have had an allergic reaction to magnesium hydroxide (milk of magnesia).

  • You should not use this medicine if you have had an allergic reaction to glycerin. You should not use this medicine if you have rectal bleeding.

Pedia-Lax warnings

  • Make sure your doctor knows if you are pregnant or breastfeeding, or if you have kidney disease, stomach pain, nausea, or vomiting.

  • Rectal bleeding, blood in stools

  • If you do not have a bowel movement after using this medicine, stop using it and talk to your doctor.

  • Call your doctor if your symptoms do not improve or if they get worse.

  • Make sure your doctor knows if you are pregnant or breast feeding.

  • Make sure your doctor knows if you have stomach pain, nausea, vomiting, or if you have had a sudden change in bowel habits lasting longer than 2 weeks.

  • This medicine should not be used for longer than one week.

Pedia-Lax interactions

  • Make sure your doctor knows if you have been using any other laxative for more than 1 week prior to using this medicine.

  • Make sure your doctor knows if you have stomach pain, nausea, vomiting, or if you have had a sudden change in bowel habits lasting longer than 2 weeks.

  • If you do not have a bowel movement after using this medicine, stop using it and talk to your doctor.

  • Call your doctor if your symptoms do not improve or if they get worse.

  • This medicine should not be used for longer than one week.

  • This medicine may interfere with some prescription medicines. Ask your doctor if you must take milk of magnesia at a different time than your other medicines.

Pedia-Lax side effects

Serious Side Effects

  • Bleeding from your rectum.

  • Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing

  • Rectal bleeding, blood in stools

  • Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing

Less Serious Side Effects

  • Mild diarrhea, cramping

  • Irritation or burning pain in your rectal area.

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