Can I take magnesium if I have glaucoma?

If you suffer from glaucoma, you know that this eye condition requires regular monitoring and special precautions. Magnesium, known for its relaxing and circulatory effects, is sometimes mentioned as a complementary treatment . But is it really compatible with glaucoma?

The potential benefits of magnesium for glaucoma

Glaucoma is a condition that causes progressive deterioration of the optic nerve, often associated with excessively high intraocular pressure.

Magnesium's vasodilatory and neuroprotective properties are generating interest for visual health, not as a cure, but as a metabolic support.

An action on the blood circulation of the optic nerve

Magnesium helps relax the walls of small blood vessels, a mechanism known as vasodilation. This action promotes better microcirculation. For the eye, optimized blood flow to the optic nerve means a better supply of oxygen and nutrients.

This effect is particularly studied in the context of normal pressure glaucoma , where vascular factors appear to play a more pronounced role in the evolution of the disease.

A protective role for nerve cells

Oxidative stress is a process of cellular damage involved in many degenerative diseases, including glaucoma. Magnesium plays a role in protecting nerve cells against this phenomenon.

Preliminary research suggests that this nutrient may help modulate the mechanisms of programmed cell death (apoptosis) in retinal ganglion cells. While these results still need to be confirmed, they offer insights into the potential role of this mineral in supporting eye health .

Indirect help through the management of nervous tension

The link between stress and overall health is well established. Magnesium is known for its regulatory effect on the nervous system. By helping to reduce nervous tension and anxiety, it can contribute to better blood pressure balance.

However, spikes in blood pressure can impact intraocular pressure . Managing stress with the help of magnesium can therefore offer an indirect benefit to your eye health .

Which forms of magnesium should you choose for eye health?

Not all magnesium supplements are created equal. For optimal effectiveness and good digestive tolerance, it is advisable to opt for so-called "third generation" forms.

These are linked to an amino acid (such as glycine) or an organic acid (such as citric acid), which greatly improves their passage into the body.

The best types of magnesium for absorption

The form of your magnesium supplement directly influences its absorption and effects. Some forms are better tolerated and more effective at reaching cells, while others can cause digestive discomfort. Here is a comparison chart to help you choose.

Form of magnesium	Bioavailability (Assimilation)	Laxative effect	Main benefit
Magnesium bisglycinate	High	Very low	Nervous system, relaxation, sleep
Magnesium citrate	Good	Moderate (depending on the dose)	Acid-base balance, energy
Magnesium oxide	Weak	Pupil	Antacid (not recommended for supplementation)

Dosage and precautions for use to be observed

The recommended daily intake of magnesium is generally between 300 and 400 mg per day for an adult. It is best not to exceed this dose without medical advice.

If you are undergoing glaucoma treatment or suffer from kidney failure, caution is advised. In these situations, consulting your ophthalmologist or primary care physician is essential before considering any supplementation.

The limitations and risks of magnesium for glaucoma

It is essential to remember that magnesium is a supportive nutrient, not a therapeutic solution. Understanding its limitations allows you to use it correctly and safely, in conjunction with your medical care.

Magnesium is not a substitute for any medical treatment.

Let's be clear: magnesium does not cure glaucoma and does not directly reduce intraocular pressure . Its action does not target the trabecular meshwork, the filter that regulates the drainage of aqueous humor and whose dysfunction is often the cause of ocular hypertension.

Therefore, this mineral is in no way a substitute for eye drops, laser treatment, or surgery prescribed by your ophthalmologist. It is a complementary support, not an alternative.

Possible interactions with other medications

Taking magnesium can interact with certain medications. For example, it can alter the absorption of some antibiotics or treatments for osteoporosis. Regarding glaucoma, some eye drops (such as beta-blockers) affect the cardiovascular system.

Even though direct interactions are rare, only a healthcare professional can assess the situation as a whole. This ophthalmological opinion is your best guarantee of safety.

What other nutrients support eye health?

A holistic approach to eye health includes a rich and varied diet. Beyond magnesium, other nutrients play a protective role for your eyes and can be incorporated into a general wellness strategy.

• Zinc and selenium : These trace elements are powerful antioxidants that help protect retinal cells.

• Vitamins C and E: They work together to limit the damage caused by oxidative stress, particularly that related to exposure to light.

• Omega-3s (EPA and DHA): They promote blood fluidity and the health of cell membranes, including those of the vessels that supply the eye.

• Coenzyme Q10: This antioxidant supports energy production in mitochondria, the "powerhouses" of optic nerve cells.

In short

In summary, magnesium can be an ally in supporting ocular blood circulation and nerve health, but it does not cure glaucoma .

Its use is generally compatible with this condition , provided that you obtain the advice of a healthcare professional to safely integrate it into your routine.

In addition to a balanced lifestyle and rigorous medical monitoring, it can help protect your optic nerve and better manage stress. If you have glaucoma, magnesium can be a discreet support for your eyes , provided you use it in consultation with your doctor.

FAQ – Your questions about glaucoma and magnesium

Is magnesium helpful for all types of glaucoma?

Its effect on circulation is primarily studied in the context of normal-tension glaucoma. Its neuroprotective and anti-stress benefits offer overall support, but only your ophthalmologist can assess its suitability for your specific case.

Is a diet rich in magnesium sufficient?

This is an essential foundation. But to reach a support dosage (300-400 mg), a supplement guarantees a stable and targeted intake, which can be difficult to obtain daily through diet alone.

How long should a magnesium treatment last?

Magnesium provides long-term support. A course of treatment lasting at least three months, which can be repeated, is often recommended to see benefits. Always follow the protocol established in consultation with your healthcare provider.

Is there a better time of day to take it?

For better tolerance, take it with a meal. Evening is a good time if you are using a relaxing form like bisglycinate, to promote restful sleep, which helps manage stress.

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Sources:

• The Effect of Oral Magnesium Therapy on Visual Field and Ocular Blood Flow in Normotensive Glaucoma - European Journal of Ophthalmology - 2009 - https://www.researchgate.net/publication/38060705_The_Effect_of_Oral_Magnesium_Therapy_on_Visual_Field_and_Ocular_Blood_Flow_in_Normotensive_Glaucoma
• The Role of Magnesium in the Pathogenesis and Treatment of Glaucoma - Pubmed - 2014 - https://pmc.ncbi.nlm.nih.gov/articles/PMC4897098/