What Are The Side Effects Of Taking Magnesium?

By Jonathan Hunsaker

Reading Time: 10 minutes

This article discusses emerging/ongoing science and research. It is intended for general informational purposes only. This content is unrelated to products offered by Organixx and does not contain any representations about the performance of such products.

So, you’ve heard about the perks of taking magnesium supplements but are wondering if it is truly beneficial, let alone safe, to take. Hence, your interest in the commonly asked question, “what are the side effects of taking magnesium?”.

While magnesium supplements may not be necessary for everyone, certain individuals may need to supplement with magnesium due to low levels or deficiencies, and there are also people who shouldn’t supplement at all.

In this blog post, we’ll delve into the various side effects of taking magnesium so that you can make an informed decision about whether it’s the right supplement for you.

Let’s get started.

What is Magnesium, and Why Do You Need It?

Magnesium is an essential mineral that is involved in numerous biochemical reactions in your body, including muscle and nerve function, blood pressure regulation, and protein synthesis.

Since your body cannot produce magnesium on its own, it must be obtained through diet or supplements. Consuming a balanced diet rich in whole grains, leafy greens, nuts, and seeds can help meet your body’s magnesium needs.

Magnesium is necessary for the following:

  • maintaining healthy blood pressure,
  • helping regulate blood sugar levels,
  • aiding the immune system,
  • supporting cognitive function,
  • promoting strong bones,
  • and providing energy for muscle contraction and nerve impulse transmission.

Without adequate magnesium intake, your crucial bodily processes can be impaired or disrupted, leading to various health issues such as:

  • fatigue,
  • weakness,
  • poor concentration,
  • anxiety,
  • and depression.

For many, dietary intake of magnesium is sufficient; however, due to medical issues or habits that impede absorption from food sources, extra supplementation may be necessary.

Before incorporating magnesium into your diet, it is crucial to be aware of the potential side effects that may arise from its use.

Key Takeaway: Magnesium is essential for many bodily functions that promote overall good health, such as maintaining healthy blood pressure, regulating blood sugar levels, strengthening the immune system, and promoting cognitive function.

Common Side Effects

When taken as a supplement, magnesium can help correct deficiencies caused by poor diet or certain medical conditions. However, if not taken correctly or in excessive amounts, magnesium can have uncomfortable side effects as a supplement.

Taking too much magnesium may result in side effects, such as:

  • nausea,
  • digestive issue,
  • and abdominal cramps.

Consuming more than 350 milligrams of magnesium without a doctor’s advice should be avoided as it can cause the aforementioned side effects.

If you experience these symptoms after taking a magnesium supplement, then stop immediately and consult your physician before continuing with the supplementation.m

Key Takeaway: Consuming too much magnesium can cause uncomfortable side effects such as nausea, vomiting, and diarrhea. To ensure safe levels of Magnesium intake and reduce the risk of adverse reactions, it is important to consult your doctor before beginning any supplementation regimen.

Rare But Serious Side Effects

While most people will experience only minor issues such as an upset stomach or headache, there are some rare but serious side effects that can occur when taking too many magnesium supplements.

Potential adverse reactions from magnesium supplementation can be severe, ranging from a disruption in heart rate to low blood pressure, shallow breathing, and fainting.

It is important for individuals with health issues and athletes to be aware of these possible risks before beginning a supplement regimen.

Due to the increased levels of magnesium potentially causing adverse reactions for those with kidney problems or high blood pressure, it is crucial that individuals with these health issues consult their doctor before supplementing.

It is also important to note that there are medications that interact negatively with supplemental magnesium, so it’s always best to speak to your doctor before adding this mineral to your diet.

It is important to be aware of the rare but serious side effects associated with taking magnesium so that you can make an informed decision.

Knowing the right steps to take in order to decrease the probability of serious side effects when consuming magnesium supplements is essential for safe use and reduced risk.

Key Takeaway: Taking too much magnesium can have serious side effects for people with existing health issues, so it is important to start slowly and increase the dose gradually while monitoring how your body responds. And, as always, consult your doctor before starting with any supplements.

How to Minimize Side Effects

While most people experience no or mild side effects when taking magnesium, some may have more serious reactions.

Fortunately, there are ways to minimize these risks and ensure you get the maximum benefit from your supplement.

First, Consult your doctor to determine the optimal dosage for you based on age and health status if you are seeking to aid with magnesium deficiency.

Remember that too much magnesium can cause problems, such as nausea and diarrhea. So, it’s important to stick to the recommended dosage.

Second, consider adding other sources of dietary magnesium to your diet if possible.

Consuming edibles rich in magnesium, like nuts, seeds, legumes, and dark leafy greens, can potentially increase your intake without taking large doses of extra forms, such as tablets or capsules, which may lead to adverse effects like hypertension or renal complications in certain cases.

Thirdly, pay attention to any changes in how you feel when starting supplementation, especially if it’s at higher dosages than usual.

Stop the use immediately if any unusual signs appear, such as headaches, dizziness, and digestive issues. This is why many experts recommend gradually increasing doses over time rather than going all-in straight away.

Giving yourself time between increases allows for easier detection of any new adverse reactions that might occur before they become too severe or long-term.

Finally, bear in mind that different individuals react differently when consuming supplements due largely to genetics.

Therefore, do not worry if someone else experiences different results even though they are using the same product—just focus on staying safe by sticking within recommended ranges.

It is critical to observe your intake of magnesium and be conscious of the potential side effects so that you can modify your dose as necessary.

When considering how much magnesium to take for optimal health benefits, it is essential to understand dosage considerations.

Key Takeaway: Ensuring you take the proper dosage and observe any potential side effects is essential to getting the most out of magnesium supplements. Gradually increase your intake, paying attention to dietary sources of this mineral, as well as how you feel when starting supplementation; everyone reacts differently, so be mindful of that, too.

Dosage Considerations

When it comes to taking magnesium supplements, the dosage is key.

The precise quantity of magnesium to be consumed depends on a range of elements, such as age, gender, and overall health. It’s important to get the right amount so that you can reap the benefits without any adverse side effects.

First off, it’s important to understand how much magnesium your body needs each day.

Adult men aged 19-30 should consume 400 mg of magnesium daily, while those over 30 require 420 mg a day.

And women around the age of 19-30 need 320 mg a day. However, pregnant or breastfeeding women may need slightly higher amounts. If you are pregnant or breastfeeding, it is strongly recommended to consult your doctor before starting any supplements.

It’s also important to consider other medications or supplements that may interact with magnesium in order to avoid any potential negative side effects, such as diarrhea or stomach cramps.

Concurrently, if you are supplementing with calcium, it is recommended not to exceed 350mg of magnesium daily, as an imbalance between these two minerals can be hazardous in high doses.

Additionally, certain antibiotics like tetracycline can reduce absorption rates, so speak with your doctor before adding more than 500mg daily into your diet if this applies to you.

Finally, when considering a supplement form, it’s best practice not to exceed 100mg at once since higher doses have been known to cause digestive discomfort due to their laxative effect on some people’s bodies.

However, there are certain forms, like chelated varieties, which allow for up to 200-300mg dose without causing any issues—just make sure they come from reputable sources.

In general, “slow and steady wins the race” when it comes down to dosages; start low and work your way up until desired results have been achieved.

Key Takeaway: In order to ensure a healthy lifestyle, it is essential to consume the correct amount of magnesium. Too much can lead to adverse side effects, such as diarrhea and stomach cramps, so “start low and go slow” when introducing magnesium into your daily routine in order to avoid any problems.

Who Shouldn’t Take Magnesium Supplements?

Magnesium is a necessary nutrient for numerous bodily processes, but it may not be suitable for certain individuals to consume magnesium supplements.

People with kidney disease or those taking certain medications may need to avoid taking magnesium supplements as they can interact negatively with their condition or medication.

Pregnant women and children should also be careful when considering taking magnesium supplements, as there are potential risks associated with over-supplementation in these populations.

Pregnant women should consult their doctor before supplementing and ensure that they do not exceed the recommended daily allowance (RDA) of 350 mg per day.

Youngsters under six years old should never take in more than 65 mg daily unless given the go-ahead by a medical professional.

Due to the potential for serious health issues, such as cardiac arrest and respiratory failure, those on diuretics should be cautious when considering magnesium supplementation.

It’s important for individuals on diuretics to talk to their healthcare provider about whether they should take a supplement or not.

Individuals who have had gastrointestinal surgery, such as gastric bypass surgery, should take caution when considering taking a magnesium supplement, as absorption of nutrients could be hindered by the procedure. Thus, it is crucial for them to consult a medical professional before adding this mineral to their regimen.

Before taking magnesium supplements, individuals with kidney disease, heart blockage, or any other medical condition should seek the advice of a physician.

Additionally, it is vital to comprehend the natural origins of magnesium and how it can serve as a substitute for supplementation.

Key Takeaway: Magnesium is a beneficial mineral for many, but caution must be taken when supplementing. Those with kidney disease, pregnant women, and children under six should not take magnesium supplements without consulting their doctor first, as over-supplementation can cause adverse effects. Also, individuals taking diuretics or who have impaired digestive function due to Crohn’s Disease or other conditions need to tread carefully before adding this mineral to their regimen.

Natural Sources of Magnesium

It’s found naturally in many foods, but some people may need to supplement with it if they are deficient. Different forms of magnesium can be obtained from natural sources, each offering unique advantages and disadvantages.

Food Sources

Many fruits, vegetables, nuts, seeds, legumes, and grains contain magnesium.

Some top food sources of magnesium include:

  • spinach (1 cup provides 157 mg),
  • Swiss chard (150 mg in 1 cup),
  • pumpkin seeds (92 mg per ⅛ cup)
  • and black beans (60 mg for ½ cooked cup).

Eating a variety of these foods can help you reach your daily recommended intake of magnesium without needing to take supplements.


Magnesium supplements come in several forms, including tablets or capsules containing various compounds such as oxide or citrate salts.

Before taking any form of magnesium supplement, it is important to speak with your doctor to ensure that you are getting the most effective absorption and that there are no underlying medical conditions that could affect your supplementation.

Additionally, certain medical conditions can make it difficult for the body to absorb this mineral even when taken as a supplement, so be sure to also discuss this with your doctor.

Sea Vegetables

Sea vegetables like kelp or dulse provide another source of dietary magnesium, although they should only be eaten occasionally due to their high levels of iodine, which can lead to thyroid problems if consumed too often over long periods of time.

Seaweed also offers other health benefits, such as being rich in antioxidants which help protect against free radical damage caused by environmental toxins and stressors like pollution and UV rays from the sun, respectively.

Overall, there are plenty of natural sources available for obtaining adequate amounts of dietary magnesium, depending on individual needs and preferences.

This can include food sources or supplements like seaweed powder or tablets containing different compounds such as oxide salts and others.

Remember that it is important to consult with your doctor prior to beginning any supplementation regimen, regardless if coming from a food or synthetic form alike.

Key Takeaway: Magnesium is an essential mineral with numerous natural sources, including food and supplements. To ensure adequate absorption of this nutrient, it’s important to consult your doctor prior to beginning any supplementation regimen.

FAQs in Relation to Magnesium Side Effects

Is 500mg of magnesium too much to take every day?

No more than 350mg of magnesium should be ingested daily, as exceeding this amount could have potentially harmful effects.

Taking 500mg of magnesium daily could lead to adverse effects such as nausea, vomiting, abdominal cramps, and diarrhea.

In some cases, it can also cause an irregular heartbeat or low blood pressure. Therefore, to ensure the most appropriate dosage for your particular needs, it is recommended that you consult your doctor.

What body system does magnesium affect?

Magnesium is an essential mineral that plays a role in many bodily functions. It helps regulate nerve and muscle function, blood sugar levels, and the production of energy.

Also magnesium also facilitates the uptake of calcium, which is vital for maintaining healthy bones and teeth.

Moreover, magnesium has been found to have anti-inflammatory effects throughout the body, as well as promote better sleep quality and stress management.

Finally, it can improve digestion by helping break down proteins into amino acids.

In General

Taking magnesium supplements can be beneficial for individuals with health issues, professionals, and athletes alike.

Nonetheless, it is essential to bear in mind the potential risks associated with too much magnesium intake so as to properly control dosage and limit any adverse reactions.

Therefore, it is important to always consult a doctor before taking magnesium supplements and ensure that the dosage does not exceed recommended levels, as this could cause life-threatening side effects.

Discover the benefits of taking magnesium with Organixx’s clean and organic supplements for a healthier lifestyle. Try our natural solutions today to experience improved health without worrying about side effects.


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