Feeling weighed down by digestive discomfort? Discover a gentle solution that's been trusted for generations.
According to the literature, approximately 16% of adults regularly experience constipation. Whether it's caused by a lack of fiber in the diet, functional gastrointestinal disorders, or a side effect of a medication, dealing with constipation can be both uncomfortable and frustrating.
Developed and patented by Charles H. Phillips in 1873, milk of magnesia has been a go-to remedy for relieving constipation for over a century. It has since become a household staple for regulating digestive health.
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Understanding Milk of Magnesia
This section provides a detailed overview of milk of magnesia, including its composition, mechanism of action, and the various forms available for purchase.
What Is Milk of Magnesia?
Milk of magnesia is a suspension of magnesium hydroxide in water. The name "Milk of Magnesia" comes from its milky white appearance.
Magnesium hydroxide is a form of the naturally occurring mineral magnesium, which has been used for centuries to address various health issues. Magnesium is indispensable for human physiology; it is required for over 300 biochemical pathways involved in everything from nerve function to blood pressure regulation.
Laxative Actions
Magnesium hydroxide is a saline laxative. It helps make stool easier to pass by drawing water into the intestines, softening dry, hard stool. The increased water content and stool volume inside the intestines stimulate intestinal peristalsis (muscle contractions) to propel stool through the bowels more efficiently.
Antacid Actions
Antacids are a type of medication used to alleviate symptoms of heartburn and indigestion. Frequently containing or combining ingredients like aluminum, calcium, and magnesium, antacids work by neutralizing stomach acid.
Forms and Availability
Milk of magnesia can be purchased over the counter without a prescription.
Milk of magnesia was originally formulated as a liquid. Liquid forms now come in flavors like cherry and mint to make them more palatable.
It is also available in caplet and gel capsule form for those who prefer not to drink the liquid.
Uses and Benefits of Milk of Magnesia
Milk of magnesia is a trusted remedy for easing digestive discomfort, such as constipation and indigestion. Beyond these established uses, there is emerging interest in its potential applications for enhancing skin health.
Relief for Constipation
Laxatives are a class of medication used to treat constipation. You may be constipated if you have:
- Fewer than three bowel movements a week
- Stools that are hard, dry, or lumpy
- Stools that are difficult or painful to pass
- A feeling of having incomplete bowel movements
General dosing recommendations for milk of magnesia to relieve constipation are as follows:
- Adults and Children 12 Years and Older: Take 30-60 mL (2,400-4,800 mg of magnesium hydroxide) by mouth per day. The dose can be taken as a single dose or split into smaller doses throughout the day.
- Children 6 to 11 Years: Take 15-30 mL (1,200-2,400 mg of magnesium hydroxide) by mouth per day. The dose can be taken as a single dose or split into smaller doses throughout the day.
Drink a full glass (8 ounces) of water with each dose.
It usually takes between 30 minutes and six hours for milk of magnesia to stimulate a bowel movement.
You shouldn't take milk of magnesia for more than one week. If you are still constipated, you should schedule an appointment to be evaluated by a doctor.
Soothing Indigestion and Heartburn
Heartburn is a burning pain in the chest that often occurs after eating, in the evening, when lying down, or bending over. It is caused by stomach acid flowing into the esophagus, irritating its lining.
Indigestion, also called dyspepsia or upset stomach, encompasses a constellation of symptoms, including upper abdominal pain, feeling full after eating a small amount of food, or feeling uncomfortably full after finishing a meal.
Adults taking milk of magnesia to relieve symptoms of indigestion and heartburn are advised to take 5-15 mL (400-1,200 mg of magnesium hydroxide) as needed, up to four times daily. Do not take more than 60 mL (4,800 mg) in one day.
Skincare and Cosmetic Uses
Acne vulgaris is a chronic inflammatory skin condition caused by excess oil production, the buildup of dead skin cells in hair follicles, and the overgrowth of a bacteria called Cutibacterium acnes.
Some online sources suggest that milk of magnesia can be applied topically to treat oily skin and acne. Proponents argue that it does this by breaking up surface oils on the skin.
The only research on its use in this capacity dates back to a 1975 letter published in a dermatology journal, where a doctor reported improvement in the number and severity of pimples using the following regimen:
- Topical application of milk of magnesia
- Washing the face twice daily with a fat-free soap
- Oral tetracycline at 250 mg four times daily
Since then, no robust clinical trials or studies have validated the efficacy of milk of magnesia for these purposes.
Risks and Precautions
Most individuals tolerate milk of magnesia well. However, to minimize the risk of side effects, it is important to be aware of the potential risks associated with its use.
Common Side Effects
The most common side effects reported with the use of milk of magnesia include:
- Diarrhea
- Stomach cramps
- Bloating
- Nausea
- Vomiting
- Fatigue
In rare cases, more serious adverse effects can occur. If you experience any of the following, discontinue use of milk of magnesia immediately and consult your healthcare provider:
- Rectal bleeding
- Allergic reactions, including skin rash, itching, hives, difficulty breathing, swelling of the face or mouth
- Signs of high magnesium levels, such as confusion, drowsiness, facial flushing, muscle weakness, and irregular heartbeat
Safety Guidelines
Milk of magnesia may not be suitable for everyone. Consult your doctor before using this medication if you are:
- Under six years old
- Pregnant or breastfeeding
- Eating a magnesium-restricted diet
- Have kidney disease
- Experience a sudden change of bowel habits lasting more than two weeks
- Continue to be constipated after taking milk of magnesia daily for one week
Interactions with Medications
Milk of magnesia can make other medications and supplements less effective by interfering with their absorption into the bloodstream. If you are taking any prescription medications or dietary supplements, it is important to consult your doctor before using milk of magnesia. To avoid drug interactions, it is recommended not to take other medications or supplements within two hours before or after taking magnesium hydroxide.
Frequently Asked Questions
Can Milk of Magnesia Be Used Daily?
Milk of magnesia is intended for short-term use only. Do not take it daily for more than a week without consulting your doctor.
Is It Safe to Take Milk of Magnesia During Pregnancy?
Milk of magnesia is generally considered safe during pregnancy when used as directed. However, it's important to talk to your doctor before using it to ensure it is appropriate for your specific situation.
Can Children Take Milk of Magnesia?
Children can take milk of magnesia, but their doctor should determine the appropriate dosage based on their weight and age.
Can I Take Milk of Magnesia to Treat Magnesium Deficiency?
While milk of magnesia contains magnesium, it is primarily used as a laxative rather than a supplement to raise magnesium levels. If you suspect you have a magnesium deficiency, consult your doctor for better-suited dietary modifications and supplements.
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Key Takeaways
- Milk of magnesia is an over-the-counter remedy containing magnesium hydroxide. It is commonly used for fast relief of constipation and indigestion.
- While some individuals advocate using milk of magnesia to manage oily skin and acne, scientific research does not support these claims.
- To prevent possible adverse effects and ensure safe use, it is recommended to consult a doctor before using milk of magnesia for digestive symptoms, especially if they persist for longer than a week.
- Always seek guidance from a healthcare professional for tailored health advice and effective relief from digestive discomfort.
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