Everything You Need to Know About Magnesium: When to Take It, How, and Why

Andy Paras

25 Feb, 2026

Magnesium is an essential mineral that plays a key role in keeping your body running smoothly. Despite being involved in over 300 enzymatic reactions, it’s often overlooked in our daily diets. If you want a complete look at the health advantages of this mineral, explore our detailed article on 6 key benefits of magnesium you should know. Magnesium is vital for many body functions, including stress management, muscle and nerve function, and bone health. But when should you take magnesium, how should you take it, and why is it so important for overall well-being? Let’s dive in.

What Is Magnesium?

Magnesium is a mineral found in many foods. It is essential for:

Energy production
Muscle function
Nerve signaling
Bone structure

About 60% of magnesium in the body is stored in bones, and 39% is in muscles and soft tissues. A small amount is also present in the blood.

Magnesium also helps regulate heart rhythm and blood pressure and supports protein synthesis. Daily needs vary depending on age, sex, lifestyle, pregnancy, and physical activity.

Why Take Magnesium? Health Benefits

Getting enough magnesium can have many positive effects on your health:

Muscle and Nerve Function

Magnesium helps regulate muscle contractions and nerve signals, which can prevent cramps and improve muscle relaxation.

Stress and Anxiety Relief

Magnesium acts as a natural stress regulator. It helps reduce cortisol (the stress hormone), calms the nervous system, and can improve mood by reducing anxiety. For more specific magnesium benefits for stress, sleep, and energy, see our complete guide on 10 essential health benefits of magnesium.

Better Sleep

Magnesium supports sleep quality by aiding melatonin production (the sleep hormone) and reducing restlessness, helping you fall asleep more easily.

Heart Health

Magnesium helps maintain normal heart rhythm and supports healthy blood pressure, reducing the risk of cardiovascular problems.

Bone Health

Magnesium is essential for bone density, helping calcium bind to bones and keeping them strong.

For daily support of the nervous system and stress management, supplements like Nutriexpert Marine Magnesium—which combines magnesium with vitamin B6—can help reduce fatigue and maintain a calm nervous system, especially for those under high stress.

When Should You Take Magnesium?

Timing can affect magnesium’s effectiveness:

Morning: If you feel tired or need a morning boost, taking magnesium can help increase energy and reduce stress, starting your day on the right note.
Evening: If you have trouble sleeping or relaxing, magnesium can help calm the nervous system, reduce muscle tension, and promote better sleep.
Before or after exercise: For athletes or anyone experiencing cramps, magnesium can improve muscle recovery and reduce cramp risk.
With meals: Magnesium is best absorbed when taken with food. Pairing it with magnesium-rich foods—like leafy greens, nuts, and seeds—enhances absorption.

To learn the best time of day to take magnesium for your specific goal — energy, sleep, stress, or exercise — check our article on when to take magnesium and what are its benefits.

Supplements like Magnefor®, with bisglycinate magnesium and vitamin B6, are designed for optimal absorption and digestive tolerance, supporting both nervous and muscular balance.

How to Take Magnesium

Magnesium is available in multiple forms:

Tablets and capsules: Easy to dose and convenient, but may cause digestive issues in some people.
Powders and drinks: Fast absorption, ideal for those who struggle to swallow pills.
Topical oils and gels: Applied to the skin, especially on muscles, to relieve cramps and promote relaxation.
From food: Leafy greens, nuts, seeds, legumes, and whole grains are natural sources to maintain adequate magnesium levels.

Signs of Magnesium Deficiency

A deficiency can impact overall well-being. Common signs include:

Excessive fatigue
Muscle cramps
Irritability or mood changes
Insomnia
Twitching or muscle spasms
Heart issues, like palpitations

If you’re curious about the common signs of magnesium deficiency and how to address them, see our full breakdown here.

People with high-stress lifestyles, those consuming excess caffeine or alcohol, or following a diet low in magnesium are at higher risk of deficiency.

Risks of Magnesium Overdose

Too much magnesium—usually from supplements—can cause:

Diarrhea
Abdominal pain
Low blood pressure
Heart rhythm issues

For balanced supplement use and timing tips, check our guide on when and how to take magnesium safely.

Always follow the recommended dosage and consult a healthcare professional before increasing magnesium intake.

Best Food Sources of Magnesium

Getting magnesium from food is the best approach. Rich sources include:

Nuts and seeds: almonds, cashews, pumpkin seeds
Legumes: black beans, chickpeas, lentils
Fruits and vegetables: spinach, avocado, bananas
Whole grains: quinoa, oats, brown rice
Dark chocolate: high in magnesium, but enjoy in moderation

You can also boost your wellness by exploring our guide to top nutrient-dense foods for a healthy diet.

Including these foods in your daily diet can help prevent magnesium deficiency naturally.

Conclusion

Magnesium is a crucial mineral for your overall health. By ensuring you get enough through food or supplements, you can support energy production, muscle and nerve function, stress management, better sleep, and heart and bone health. Knowing when and how to take magnesium will help you make the most of its benefits, making it a powerful ally for a healthy and balanced life.