Miralax (Polyethylene glycol 3350) — Uses, Dosage, Side Effects & Safety

Drug class: Osmotic laxative

Overview

Miralax is a commonly used over-the-counter laxative that helps relieve occasional constipation in adults and children. It works by drawing water into the colon, which softens the stool and makes bowel movements easier to pass. Miralax is not habit-forming and is generally considered safe for short-term use. It does not cause sudden urgency, cramping, or gas for most people. Patients should know that Miralax usually produces a bowel movement within 1 to 3 days after starting treatment. It is important to use the medication as directed and not to exceed the recommended dose. If constipation persists for more than a week, consult your healthcare provider.

Therapeutic uses

  • Constipation
  • Bowel preparation for colonoscopy
  • Fecal impaction

Common side effects

  • Bloating
  • Abdominal cramping
  • Gas
  • Nausea
  • Diarrhea
  • Electrolyte imbalance
  • Allergic reactions (rare)

Frequently Asked Questions about Miralax

How long does it take for Miralax to work?

Miralax typically produces a bowel movement within 1 to 3 days after starting treatment.

Can Miralax be used daily?

Miralax can be used daily for up to 7 days unless otherwise directed by your healthcare provider. Prolonged use should be supervised by a doctor.

Is Miralax safe for children?

Miralax may be used in children under medical supervision. Do not give to children under 17 years without consulting a healthcare provider.

Can I use Miralax during pregnancy or breastfeeding?

Miralax is generally considered safe during pregnancy and breastfeeding, but always consult your doctor before use.

What should I do if I experience severe side effects?

Stop taking Miralax and seek immediate medical attention if you experience severe abdominal pain, rectal bleeding, or signs of an allergic reaction.

Can Miralax be mixed with any beverage?

Yes, Miralax powder can be dissolved in water, juice, coffee, tea, or other non-alcoholic beverages.

Does Miralax cause dependence?

Miralax is not habit-forming and does not cause dependence when used as directed.

Related Miralax information

Educational information only. Always consult a qualified healthcare professional before starting, stopping, or changing any medication.