MiraLAX: Ingredients, Uses, Dosage, Side Effects, Warnings
MiraLAX is a brand of polyethylene glycol 3350, a laxative used to treat occasional constipation and irritable bowel syndrome (IBS). MiraLax is manufactured by Bayer, and was approved by the U.S. Food & Drug Administration (FDA) in February 1999.
Basically, osmotic agents, such as polyethylene glycol found in MiraLAX, work naturally with the water in the colon to unblock a person’s system. Soluble, non-absorbable PEG 3350 hydrates, softens and eases stools by gently attracting water in the colon through a process known as osmosis. The water increases stool volume and stretches the wall of the bowel, triggering the defecation reflex so the digestive system can be unblocked naturally.
How long does it take for miralax to work?
MiraLAX should start working within one to four days after commencement of treatment. Osmotic laxatives like MiraLAX contain substances that are poorly absorbable and draw water into the lumen of the bowel. Polyethylene glycol functions as an osmotic laxative that causes increased water retention in the lumen of the colon by binding to water molecules, thereby producing loose stools. Because it works naturally with the water in your body without causing harsh side effects, you do not need to worry about sudden urgency.
What is the most important information I should know about MiraLAX?
You should not use this medicine if you have a bowel obstruction or intestinal blockage. If you have any of these conditions, you could have dangerous or life-threatening side effects from MiraLAX.
Do not use MiraLAX more than once per day. Call your doctor if you are still constipated or irregular after using this medication for 7 days in a row.
What should I discuss with my healthcare provider before taking MiraLAX?
You should not use this medicine if you are allergic to polyethylene glycol, or if you have a bowel obstruction or intestinal blockage. If you have any of these conditions, you could have dangerous or life-threatening side effects from MiraLAX.
People with eating disorders (such as anorexia or bulimia) should not use this medication without the advice of a doctor.
To make sure this medicine is safe for you, tell your doctor if you have:
• nausea, vomiting, or severe stomach pain;
• ulcerative colitis;
• irritable bowel syndrome;
• kidney disease; or
• if you have had a sudden change in bowel habits that has lasted 2 weeks or longer.
FDA pregnancy category C. It is not known whether MiraLAX will harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant while using this medication.
It is not known whether MiraLAX passes into breast milk or if it could harm a nursing baby. Tell your doctor if you are breast-feeding a baby.
How should I take MiraLAX?
Follow all directions on your prescription label. Do not use this medicine in larger or smaller amounts or for longer than recommended.
To use the powder form of this medicine, measure your dose with the medicine cap on the bottle. This cap should contain dose marks on the inside of it. Pour the powder into 4 to 8 ounces of a cold or hot beverage such as water, juice, soda, coffee, or tea. Stir this mixture and drink it right away. Do not save for later use.
MiraLAX should produce a bowel movement within 1 to 3 days of using the medication. MiraLAX normally causes loose or even watery stools.
Do not use MiraLAX more than once per day. Call your doctor if you are still constipated or irregular after using this medication for 7 days in a row.
Store at room temperature away from moisture and heat.
What happens if I miss a dose?
Take the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not take extra medicine to make up the missed dose.
What happens if I overdose?
Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.
What should I avoid while taking MiraLAX?
Follow your doctor’s instructions about any restrictions on food, beverages, or activity.
What are the possible side effects of MiraLAX?
Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Stop taking this medicine and call your doctor at once if you have:
• severe or bloody diarrhea;
• rectal bleeding;
• blood in your stools; or
• severe and worsening stomach pain.
Common side effects may include:
• bloating, gas, upset stomach;
• dizziness; or
• increased sweating.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
What other drugs will affect MiraLAX?
Other drugs may interact with MiraLAX, including prescription and over-the-counter medicines, vitamins, and herbal products. Tell each of your health care providers about all medicines you use now and any medicine you start or stop using.
Where can I get more information?
Your pharmacist can provide more information about MiraLAX.
