“Miralax” is a brand name for a medication called polyethene glycol 3350. It’s an osmotic laxative that is commonly used to treat occasional constipation. Osmotic laxatives like Miralax work by drawing water into the stool, which softens it and makes it easier to pass.

This increased water content in the stool helps stimulate bowel movements and relieve constipation. Miralax is often used as a gentle and effective solution for temporary relief from constipation.

How to use Miralax 17 Gram Oral Powder Packet

Consume orally typically once per day, or as instructed by your healthcare provider or the guidelines on the product packaging.

If you’ve been given individual packets, mix the powder according to your doctor’s or pharmacist’s guidance. When utilizing the bulk bottle, employ the provided cap to measure the prescribed amount. Combine the powder with a glass (4-8 ounces/120-240 millilitres) of liquid, like water, juice, soda, coffee, or tea. Before ingesting the mixture, thoroughly stir the powder until it completely dissolves. If you have any inquiries, consult your pharmacist.

This medication might interfere with the effectiveness of certain liquid thickeners (products containing starch), potentially increasing the risk of choking. If you’re using liquid thickeners alongside this medication, confer with your pharmacist to choose a suitable option that won’t interact with this treatment.

It might take 2 to 4 days from the commencement of this medication to experience a bowel movement. Avoid increasing the dosage or taking it more frequently than prescribed. Similarly, refrain from using this medication for more than 2 weeks unless specifically directed by your doctor.

Inform your doctor if your condition persists or worsens. Prolonged or excessive usage might lead to reliance on laxatives and chronic constipation. Overuse can lead to diarrhoea, dehydration, and imbalances in minerals (such as low sodium).

If you’re utilizing over-the-counter polyethylene glycol for self-care of occasional constipation, and you haven’t seen results after 7 days, consult your doctor for additional guidance on alternative treatments.

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Side Effects

Adverse effects of Miralax (polyethylene glycol 3350) can include:

  1. Nausea: Feeling sick to the stomach, often accompanied by a sensation of needing to vomit.
  2. Abdominal Cramping: Uncomfortable contractions or spasms in the abdominal area.
  3. Gas: Accumulation of air in the digestive tract, resulting in bloating and discomfort.
  4. Diarrhea: Frequent and loose bowel movements.
  5. Stomach/Abdominal Pain: Aches or discomfort in the stomach or abdominal region.
  6. Excessive Bowel Movements: Having more bowel movements than usual.
  7. Bloody Stools: Passage of stools containing blood, which can indicate internal bleeding.
  8. Rectal Bleeding: Bleeding from the rectum, often seen as blood on toilet paper or in the stool.
  9. Allergic Reaction: Although rare, a serious allergic reaction may occur. Symptoms can include rash, itching, swelling (especially of the face, tongue, or throat), severe dizziness, and difficulty breathing.


Prior to taking this medicine, inform your healthcare provider or pharmacist if you are allergic to polyethene glycol or if you have any other allergies. This product could include inactive components that might trigger allergic responses or other complications. For additional information, consult your pharmacist.

Before initiating this treatment, disclose your medical history to your healthcare provider or pharmacist, particularly if you have experienced persistent nausea, vomiting, or abdominal pain, or if you have a history of stomach/intestinal issues (like bowel obstruction or irritable bowel syndrome), or kidney disease.

Elderly individuals might be more susceptible to the potential side effects of this medication, particularly diarrhoea.

While pregnant, it is advisable to use this medication only if it is clearly necessary. Discuss the potential risks and benefits with your doctor.

It is uncertain whether this drug passes into breast milk. Seek advice from your doctor before breastfeeding.


Interactions between drugs can alter the effects of your medications or raise the possibility of severe side effects. This information does not encompass all conceivable drug interactions.

Maintain a record of all the substances you are using, which encompasses both prescribed and non-prescribed drugs, as well as herbal products, and communicate this list to your doctor and pharmacist. Do not initiate, cease, or modify the dosage of any medications without the consent of your doctor.


If someone has taken too much of this medication and is experiencing severe symptoms like losing consciousness or struggling to breathe, dial 911. Otherwise, promptly contact a poison control centre. Residents of the United States can reach their local poison control centre at 1-800-222-1222. Canadian residents should get in touch with their respective provincial poison control centres. Signs of an overdose might involve intense diarrhoea, dizziness, and a reduction in urine output.

Important Points:

  • Do not share this medication with others.
  • To avert constipation, remember to engage in regular exercise, stay hydrated, and consume foods rich in fibre like whole grains, bran, fresh fruits, and vegetables. Speak with your doctor or pharmacist about lifestyle modifications that could be beneficial for you.

Missed Dose

If you miss a dose, take it when you recall. If it’s close to the time for the next dose, skip the missed dose and resume your regular dosing schedule. Do not double the dose to compensate for the missed one.


Keep this medication at room temperature, shielding it from light and moisture. Refer to the packaging for the exact temperature range. For queries about storage, consult your pharmacist. Avoid storing it in the bathroom. Ensure that all medications are out of reach of children and pets.

Dispose of this product properly when it’s expired or no longer needed. Refrain from flushing medications down the toilet or pouring them into drains unless specifically instructed to do so. Seek advice from your pharmacist or local waste disposal authority.

Read Also: Teva-Clonazepam: Uses, Side Effects, Interactions


In conclusion, understanding the proper usage and precautions associated with this medication is crucial for ensuring its safe and effective use.

Be vigilant about potential interactions with other substances and medications, and promptly seek medical assistance in case of overdose or severe symptoms.

Remember not to share this medication with others, and consider making lifestyle adjustments, such as regular exercise and a balanced diet, to manage constipation effectively.

Additionally, adhering to the prescribed dosing schedule and storing the medication appropriately are essential steps to maintaining its integrity and potency.

By following these guidelines, you can optimize the benefits of the medication while minimizing the risks, ultimately contributing to your overall health and well-being. If you have any doubts or questions, don’t hesitate to consult your healthcare provider or pharmacist for personalized guidance.

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The information presented on this website is not intended as specific medical advice and is not a substitute for professional treatment or diagnosis. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.


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