How much MiraLax can I take for severe constipation?

Curious about a gentle solution for constipation relief? Welcome to our comprehensive guide on MiraLax is an over-the-counter medicine to relieve constipation and manage bowel irregularities. Thinking about how much MiraLax to take for severe constipation? In this blog, we have got you covered whether it is for kids or adults. In this blog, learn about dosages, potential side effects, and what to do if you miss a dose. Have questions? We have answers. Relax and read this blog about MiraLax, but it is suggested to consult your doctor for more personalized advice.

What is MiraLax?

MiraLax (polyethylene glycol 3350) is an over-the-counter medication to treat constipation. It is usually recommended as a short-term treatment to relieve constipation. Some patients might need to take it for a prolonged period to relieve severe constipation. Sometimes, doctors may recommend MiraLax for colonoscopy bowel preparation. It is a medicine that helps to ease bowel movements 1-3 days after taking it.

MiraLax is a tasteless powder that you can take with water or juice. It comes in different quantities, from bottles to small packets.

How much MiraLax can I take for severe constipation?

Your doctor will be the best person to suggest how much MiraLax you should take for severe constipation. The dosage of MiraLax depends on two factors and it includes, why it is being used and the age of the individual who will be taking the medicine.

Typically, a small amount of MiraLax is enough to get the best results but if you are unsure about the dosage, contact your doctor or pharmacist.

Here are some general guidelines for MiraLax dosage:

  • Do not overdose it. Take as much as prescribed by the doctor.

  • Use the medicine bottle cap to measure the amount of MiraLax you are consuming.

  • Stir and dissolve the powder properly in liquid before consuming. Do not consume powder with lumps.

  • Discontinue consumption within a week. Do not overdose on it.

  • Do not combine with starch-based liquids.

Dosage for Adults

MiraLax is a medicine to regulate bowel movements. It is a powder that you can mix into any drink as hot, cold, or room temperature. You can get it in small, one-time-use packets or a bottle with a measuring cap.

For adults and individuals those 17 years and older:

  • Mix 17 grams (that is one capful or one packet) in one glass of your favorite drink.
  • Stir and dissolve well until the powder dissolves, then drink it.
  • Take it once a day and as prescribed by the doctor.
  • MiraLax is gentle and takes about 1 to 3 days to start working. Don not use it without a doctor prescription. If you are experiencing severe constipation and want to continue the medicine for more than a week, it is suggested to consult your doctor beforehand.

Dosage for Kids

If your child has issues with bowel movements, you can try MiraLax but make sure to consult a pediatrician beforehand. If he/she approves this medicine for your child, ask about the right amount and medicine. MiraLax is FDA approved medication for individuals more than 17 years of age. However, some doctors recommend MiraLax to children for off-label purposes. They can help choose the most suitable laxative for your child’s needs and ensure a safe and effective solution.

Always follow your doctor’s guidance for proper use and dosing.


MiraLax and Metamucil are effective for treating constipation, although many clinical studies haven not directly compared them. The American Society of Colon and Rectal Surgeons suggests increasing dietary fiber or using supplements like Metamucil as a primary option for preventing and treating constipation, including the chronic kind.

They also suggest osmotic laxatives such as MiraLax for constipation treatment, including chronic cases. Typically, both MiraLax and Metamucil take about 1 to 3 days to regulate bowel movement.

Side Effects of MiraLax

Every medicine has its benefits and side effects. Below mentioned are the side effects of the MiraLax.

Common side effects

Serious side effects

Dehydration: Sometimes, MiraLax may cause diarrhea and may lead to dehydration. Continuous loss of fluid from the body during bowel movements can cause extreme dehydration. Here are the symptoms of dehydration:

Allergic reaction: Although MiraLax is safe and effective to use, it may sometimes cause allergic reactions. Symptoms of an allergic reaction include:

Diarrhea: Diarrhea or lose motions is one of the most common but severe side effects of MiraLax. If you are taking more than the recommended dosage, diarrhea is more likely to happen. Children or senior adults have a higher risk of causing diarrhea by the excessive usage of MiraLax. According to a study by Wiley Online Library, about 11% of individuals who are taking MiraLax experience diarrhea as a side effect.

Weight gain: There is no evidence but some individuals have experienced a slight weight gain while taking MiraLax. However, there is no strong proof that MiraLax could be a cause of weight gain.

Severe headache: Some people said that they experienced severe headaches after taking MiraLax to relieve constipation. However, it is also not clear if MiraLax can cause headaches.

The same side effects could be the same with children. MiraLax is not FDA-approved for children as it can cause some severe side effects on children such as anger, aggression, irritation, mood swings, seizures, etc.

What if I miss a dose of MiraLax?

If you miss a dose of MiraLax, take it as soon as you remember. If it is close to the time for your next scheduled dose, skip the missed one and continue with your regular dosing schedule. Do not double up to make up for a missed dose.

It is crucial to follow the recommended dosing schedule provided by your healthcare provider or as indicated on the MiraLax packaging. If you have concerns or questions about missed doses, it is best to consult with your doctor for personalized advice based on your specific situation.


MiraLax, available over the counter, is a laxative suitable for occasional constipation in adults and those aged 17 and above. For guidance on laxatives for younger children, consult with a healthcare provider.

The standard MiraLax dose is generally safe for most adults. However, if you have specific conditions like kidney disease, it is advisable to discuss with your healthcare provider before using MiraLax.

Frequently Asked Questions

Is MiraLax a stool softener and laxative?

Yes, MiraLax is both a stool softener and a laxative.

Is MiraLax safe to take everyday?

MiraLax is generally safe for daily use but consult a healthcare provider for prolonged use.

Is MiraLax better than lactulose?

The effectiveness of MiraLax vs. lactulose may vary; consult a doctor for personalized advice.

What is MiraLax vs. milk of magnesia?

MiraLax and milk of magnesia are different types of laxatives with distinct mechanisms.

What is MiraLax vs. Colace?

MiraLax and Colace have different mechanisms; MiraLax softens stool, while Colace is a stool softener.

What is MiraLax vs. Citrucel?

MiraLax and Citrucel differ; MiraLax is a laxative, Citrucel is a fiber supplement.

What is MiraLax vs. PediaLax?

MiraLax and PediaLax cater to different age groups, the former for adults, and the latter for children.

What is the best time to take MiraLax?

The best time to take MiraLax is typically in the morning or as advised by your healthcare provider.

Credit : Source Post

We will be happy to hear your thoughts

Leave a reply
Shopping cart