Milk of Magnesia, scientifically known as magnesium hydroxide, is a widely available over-the-counter remedy. It is frequently used for temporary relief from occasional constipation and to alleviate symptoms associated with excess stomach acid, such as heartburn and indigestion.
Recommended Duration and Safe Usage
Milk of Magnesia is intended for short-term use to address digestive issues. For constipation, it typically offers relief within 30 minutes to 6 hours. It is recommended for occasional constipation and should not be used for more than 7 consecutive days. Prolonged use as a laxative can lead to dependency and may also result in electrolyte imbalances and dehydration.
When used to alleviate indigestion or heartburn, Milk of Magnesia provides temporary relief by neutralizing stomach acid. It is suitable for occasional episodes, not daily treatment. The maximum recommended duration for antacid use is generally up to two weeks, unless a healthcare professional advises otherwise.
Dosage guidelines vary based on the reason for use and age. For adults and children 12 years and older, typical doses for constipation range from 30 to 60 ml; for indigestion, 5 to 15 ml, repeated as needed up to four times daily, not exceeding 60 ml in 24 hours. Children aged 6 to 11 years should take a reduced dose, and for children under 6, consulting a pediatrician is important before use. Measure doses carefully with a provided device and follow all instructions on the product label.
Drinking a full glass of water with each dose, especially when using it as a laxative, is important for effective action and to help prevent dehydration. While many people tolerate Milk of Magnesia well, mild side effects can include diarrhea, stomach cramps, nausea, or vomiting. Staying hydrated helps mitigate these effects. Not exceeding the recommended dose is important for safe usage.
When to Consult a Healthcare Professional
Consult a healthcare professional if digestive symptoms persist beyond the recommended duration of use. If constipation does not improve after 7 days, or if indigestion symptoms last longer than two weeks, medical advice should be sought. This applies even if the medication initially provided some relief, as ongoing issues may indicate an underlying condition.
Certain severe side effects warrant immediate medical attention. These include severe abdominal pain, rectal bleeding, or no bowel movement after taking the laxative as expected. Signs of high magnesium levels, such as unusual muscle weakness, a slow or irregular heartbeat, or confusion, require prompt evaluation. Symptoms of dehydration, such as decreased urination, dizziness, or extreme thirst, also warrant medical consultation.
Individuals with pre-existing health conditions should consult a doctor before using Milk of Magnesia. These include kidney disease, heart disease, intestinal obstruction, or symptoms that might suggest appendicitis (severe stomach pain, nausea, vomiting). Those on a magnesium-restricted diet or with inflammatory bowel conditions should also seek professional guidance. Milk of Magnesia can interact with certain medications, including some antibiotics (like tetracyclines and quinolones), iron supplements, and digoxin, potentially reducing their absorption or effectiveness. Separate doses of Milk of Magnesia from other medications by several hours.
Milk of Magnesia offers symptomatic relief but does not address the root cause of persistent digestive problems. If chronic constipation or frequent indigestion continue, medical evaluation can identify and treat underlying conditions. Relying solely on symptomatic treatments for prolonged periods can mask serious health concerns.