Does milk of magnesia expire?

In this brief article, we are going to answer the question “does milk of magnesia expire?” with an in-depth analysis of whether milk magnesia expires or not. Moreover, we are going to discuss what exactly is magnesia milk. 

Does milk of magnesia expire?

Yes, milk from Magnesia spoils and becomes stale due to bacterial action. When not exposed to microorganisms, it normally remains safe, however, it may die spontaneously.

What exactly is magnesia milk?

Magnesium hydroxide, or milk of magnesia, is a hydrated suspension of magnesium carbonate in water. It is an inorganic compound that occurs naturally in the form of the mineral brucite. It’s a white powder that’s commonly used as an antacid or laxative.

Many medicines contain the milk of magnesia, which is used to treat constipation. It is a laxative that aids in the movement of the intestines, which aids in the relief of constipation. It’s also used to relieve indigestion, alleviate heartburn, and treat upset stomachs.

Does liquid magnesium have a shelf life?

No, it does not “go bad.” However, the components could precipitate, forming a solid block on the bottom of the container that would be difficult to re-suspend over time. At the bottom of the container, there appears to be no solid block.

Is Phillips’® Milk of Magnesia required to be kept refrigerated? 

No. Phillips’® Milk of Magnesia should not be frozen or refrigerated at any time. Simply store at room temperature with the cap properly fastened.

Will a stool softener that is expired still work?

Most pharmaceuticals keep their strength for at least one to two years after they expire, according to studies, and others have been found to maintain potency for up to 15 years. As a result, depending on its intended usage, the medication in your cupboard may still be safe to use.

What drugs become harmful when they have passed their expiration date?

Practically speaking, nitroglycerin tablets, insulin, and tetracycline, an antibiotic that may become harmful to the kidneys after it expires, are among the medications that degrade quickly, according to Hall.

Benefits of Milk of magnesia:

In the case of constipation, milk of magnesia is an excellent remedy. Because it is made out of inorganic materials, it has a minimal impact on the body. When ingested, it also has laxative qualities, relaxing the intestinal muscle.

In case of heartburn or indigestion, milk of magnesia is used as an antacid. Antacids are alkaline substances that help to neutralize stomach acidity. When magnesia milk reaches the stomach, it neutralizes the acid and relieves heartburn symptoms.

It’s used to treat indigestion, or the inability to digest food, which is a common ailment. As an antacid, it helps to keep the stomach’s pH balanced while also relaxing the muscles. It aids in the treatment of dyspepsia and other digestive issues in this way.

Side effects of using milk of magnesia:

Just like the benefits, milk of magnesia also has side effects on health and the body. Some of these side effects are:


Milk of Magnesia is a laxative that is used to relieve constipation. However, if ingested in large quantities, it might cause diarrhea. If diarrhea persists, you should see a doctor since it might be detrimental to your health.

Excess magnesium in the body: 

A spike in magnesium levels in the blood is another negative effect of drinking too much milk of magnesia. Muscle weakness, irregular breathing, short breath, mood changes, and irregular heartbeats are all signs of high magnesium content in the blood.


You may become dehydrated as a result of an increase in mineral content in the body and self-induced diarrhea. Dry mouth, dizziness, excessive thirst, reduced urine, and muscle weariness are all signs of dehydration caused by the milk of magnesia. 

A severe allergic reaction to the milk of magnesia may occur in certain persons, but it is extremely rare. Excess consumption also causes abdominal pain, bloody stools, and rectal bleeding in some persons who become reliant on it to pass a stool.

Milk of Magnesia Expiration: 

Milk of Magnesia is a naturally occurring chemical that requires processing to make it palatable. Magnesia milk that has been processed has lost its potency and is no longer effective. It is best not to ingest a product that has expired because it is no longer effective.

When expired milk of magnesia is drunk, the following negative effects occur:


After eating an expired laxative, it is highly typical to experience long-term diarrhea or 

stomach distress.

Stomach cramps: 

Because it is an antacid, one of the effects it may have on the stomach is to relax the muscle while neutralizing acid. If you have expired medicine in your stomach, it can disrupt your body’s normal flora and cause health issues.

Chalky taste in mouth:

Bad milk of magnesia, unlike good milk of magnesia, produces a gritty taste in the tongue and causes a gag reflex when swallowed. The taste and smell of expired medicine can be used to determine whether it is safe to use.


In this brief article, we answered the question “does milk of magnesia expire?” with an in-depth analysis of whether milk magnesia expires or not. Moreover, we discussed what exactly is magnesia milk. 


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