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Constipation can be an uncomfortable and awkward condition. Everyone experiences constipation from time to time, but it is usually short-term and not very serious. There are ways to help combat constipation, such as taking Epsom salts as a laxative. Epsom salt is a mixture of different salts, but the main one is magnesium sulfate. The U.S. Food and Drug Administration (FDA) has approved the oral use of Epsom salt for occasional constipation. [1]

Part 1
Part 1 of 3:

Taking Epsom Salt Laxatives

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  1. There are numerous types of Epsom salt that you can buy. Make sure the type of Epsom salt you buy has magnesium sulfate as its main ingredient. [2] If it has any other type of ingredient as the main ingredient, do not buy it. You could poison yourself if you buy the wrong kind.
  2. To begin an Epsom salt mixture for a laxative, warm eight ounces (237 mL) of water in a pot on the stove over medium heat. [3] Don't let the water boil, but make sure it is warmer than room temperature.
    • This can take a few minutes.
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  3. Add 2 to four 6 teaspoons (12 to 36 g) of Epsom salt to the warm water mixture if the mixture is for an adult. Stir well under low heat until all the salt has dissolved. If the salty taste bothers you, add a small amount of lemon juice to help with the taste. [4]
    • Alternatively, use the microwave to heat the water first, then add the salt.
  4. Once you take it off the stove, set it aside in a mug or cup to cool. Allow the mixture to cool down to a comfortable and drinkable temperature. When it is cool enough for you to drink but still warm, drink the whole cup at once.
  5. This mixture is safe to use twice a day as long as you don’t exceed the maximum recommended dose of 6 teaspoons (36 g). Drink the doses at least 4 hours apart. [5] You can continue drinking this mixture for up to 4 days. If after 4 days you haven’t had any bowel movement or if you still feel constipated, call your doctor for advice. [6]
    • Epsom salts taken as a laxative generally work within 30 minutes to 6 hours. Make sure you take it during a time where you have easy access to a bathroom to avoid accidents or discomfort.
    • If you are giving the laxative to a child under the age of 12, you may use one to two level teaspoons (6 to 12 g). [7] Do not give this mixture to children under 6 years old. The safety of Epsom salt as a laxative on this age group has not been tested. [8]
  6. While you are taking Epsom salt as a laxative, increase your water intake. The mixture can cause dehydration and you need to keep your water levels up in order to stay hydrated and healthy. [9]
    • Increased water intake can also help with your bowel movements, so it is helpful in multiple ways. [10]
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Part 2
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Knowing When To Avoid Epsom Salt

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  1. Constipation can come along with other symptoms. If you are experiencing any symptoms other than constipation, avoid taking Epsom salt or any other laxative until you call you doctor. [11]
    • Never take Epsom salt as a laxative if you are experiencing severe stomach pain, nausea, vomiting, have had a sudden change in bowel habits that has lasted two weeks or longer, are suffering from rectal bleeding, or have dark, tarry stools. [12]
  2. There are certain medications that cannot be taken with Epsom salts. Do not use Epsom salt as a laxative if you are taking antibiotics such as tobramycin, gentamicin, kanamycin, neomycin, and amikacin. [13]
    • If you are currently taking other medications such as corticosteroids, blood pressure medications, diuretics, pain relievers, antacids, or antidepressants, consult your physician before using Epsom salts as a laxative. [14]
  3. There are some conditions that might be complicated if you take Epsom salt. Make sure you check in with your physician before using Epsom salt as a laxative if you have kidney disease, diabetes, high blood pressure, any known heart arrhythmia, or if you have an eating disorder. [15]
    • Also ask your doctor if it is safe for you to use if you are pregnant or breastfeeding.
    • Also contact your doctor before using it if you have used another laxative in the last two weeks that has not worked for you. [16]
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Part 3
Part 3 of 3:

Understanding Constipation

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  1. Constipation is the difficult or uncomfortable passage of stools. The most common symptoms of constipation are a decreased number of bowel movements, smaller than normal stools, stool that is difficult to pass, and pain or bloating in your abdomen. [17]
    • If constipation becomes chronic or long-term, it can be serious and you should consult a physician. [18]
  2. Constipation commonly occurs because people don’t include enough fiber or water in their diet. Constipation can also be due to too little exercise or as a side effect of a number of different drugs. These include antacids, diuretics, narcotic pain relievers, antidepressants, and muscle relaxants. Constipation can also be caused by pelvic disorders or it can be a sign of irritable bowel syndrome (IBS), a form of which has both diarrhea and constipation. [19]
    • It is important to remember and realize that constipation can be a symptom of a number of more serious medical disorders including diabetes, an underactive thyroid, inflammatory bowel disease, and some neurological disorders.
    • Other causes of constipation are changes in your daily routine such as travel and not enough time to have bowel movements. This can happen if you have a particularly busy lifestyle or are busy helping spouses, partners, or children or are a caregiver to an elderly relative. [20]
  3. There is not really a set rule to how frequently you should have a bowel movement. Most people feel most comfortable when they have at least one bowel movement every day, but there is a wide variation for normal bowel movements. Some people have two to three bowel movements a day and this is perfectly normal. Other people have a bowel movement every other day, and this is normal for them. [21]
    • In general, at least four to eight times a week seems to be most common. The key is your diet and comfort level. People with more frequent bowel movements tend to have high fiber diets and are often vegetarians or vegans. Those with fewer bowel movements tend to have a higher meat content in their diet. [22]
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Expert Q&A

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  • Question
    Where can I buy epsom salts for constipation?
    Chris M. Matsko, MD
    Family Medicine Physician
    Dr. Chris M. Matsko is a retired physician based in Pittsburgh, Pennsylvania. With over 25 years of medical research experience, Dr. Matsko was awarded the Pittsburgh Cornell University Leadership Award for Excellence. He holds a BS in Nutritional Science from Cornell University and an MD from the Temple University School of Medicine in 2007. Dr. Matsko earned a Research Writing Certification from the American Medical Writers Association (AMWA) in 2016 and a Medical Writing & Editing Certification from the University of Chicago in 2017.
    Family Medicine Physician
    Expert Answer
    You can buy epsom salts for constipation at any health food store, grocery, or pharmacy.
  • Question
    Can I take Epsom salts when taking amoxicillin?
    Chris M. Matsko, MD
    Family Medicine Physician
    Dr. Chris M. Matsko is a retired physician based in Pittsburgh, Pennsylvania. With over 25 years of medical research experience, Dr. Matsko was awarded the Pittsburgh Cornell University Leadership Award for Excellence. He holds a BS in Nutritional Science from Cornell University and an MD from the Temple University School of Medicine in 2007. Dr. Matsko earned a Research Writing Certification from the American Medical Writers Association (AMWA) in 2016 and a Medical Writing & Editing Certification from the University of Chicago in 2017.
    Family Medicine Physician
    Expert Answer
    You should refrain taking other medications that are not essential when taking an antibiotic, just to be safe.
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      Warnings

      • The best way to prevent constipation is to eat more fiber and drink more fluids. [23] If it is a chronic and persistent condition, it is best to consult a doctor as it could be a much more serious condition.
      • Never use Epsom salt as an enema. It is not safe to administer Epsom salt that way. [24]
      • Do not use Epsom salts indiscriminately. Abuse of laxatives is counterproductive and may cause several disorders such as altered intestinal motility, diarrhea, intestinal laziness (leading to constipation), and hemorrhoids. [25]
      • Chronic and persistent constipation is a possible symptom of celiac disease, in which case you will need to eliminate gluten from your diet for good. [26]
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      About This Article

      Article Summary X

      If you want to use Epsom salt as a laxative, make sure you choose a salt that has magnesium sulfate as its main ingredient. Heat 8 ounces of water in a pot until it is warmer than room temperature, then add 2-4 level teaspoons of Epsom salt. Stir well until all of the salt has been dissolved, then drink the mixture. If the taste bothers you, add a little lemon juice to the water. Repeat twice a day for up to 4 days as needed. Keep reading for advice from our medical reviewer on which medications should not be mixed with Epsom salt.

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