Does Magnesium Make You Pee More? Or Is it Something Else?

Frequent urination can be unsettling, but before you start googling what’s wrong with you – take a deep breath and relax.

If you’ve recently started taking magnesium supplements, you might notice you’re visiting the bathroom more often.

So, there’s only one logical question that can come from that place, and that is – does magnesium make you pee more?

A tough one.

Let’s see if we can find an answer.

Does Magnesium Affect Urination?

Magnesium can indeed influence your urination patterns, but not in the way you may seem.

This essential mineral doesn’t have a diuretic effect (at least not in a traditional sense), meaning it can’t increase urine production in some individuals. But at the same time – magnesium can help with water retention.

Water retention is one of the common problems we face, alongside magnesium deficiency. [1]

So, when you finally get the necessary magnesium into your system, that same magnesium gets to work and does its best to “force” your body to get rid of the extra liquid, which is why you might visit the bathroom more often.

So, yes, magnesium does make you pee more. Sort of.

Does Magnesium Have Any Side Effects?

Although magnesium is generally safe and well-tolerated – even at high doses. What usually happens, is your body absorbs all the magnesium it needs, while the rest finds its way out.

However, some individuals may experience side effects from those same high doses.

These side effects can include diarrhea, stomach cramps, and nausea, which is why you can sometimes find magnesium salts used as laxatives.

How Long Does it Take Before Magnesium Starts Working?

The time it takes for magnesium to exert its effects on the body varies depending on factors such as individual absorption rates, dosage, and the specific form of magnesium being used. 

Generally speaking, it takes a few days to a week for magnesium levels to stabilize in the body and for noticeable effects to be experienced.

Why Do I Have to Pee So Much at Night?

Frequent nighttime urination, known as nocturia, can be attributed to various factors such as aging, underlying health conditions (e.g., diabetes, prostate issues), certain medications, and even lifestyle habits like consuming excessive fluids (usually alcohol) before bedtime.

If you’re concerned about your nighttime urination, we’d urge you to fix some of your daily or nighttime habits or consult with your healthcare provider to rule out any potential health issues.

Are There Any Supplements That Could Cause You Too Pee More Often?

There are a few supplements that may have diuretic effects, causing you to urinate more frequently.

The first ones that come to mind are vitamin C or calcium, which have been linked to increased urine production. [2] Some have also linked vitamin D with excessive urination, but that one’s up for debate.

Quite frankly, the first ones are up for debate also, but at least there’s some evidence to support that theory.

What Should I Do to Stop Frequent Urination?

If frequent urination is bothering you, there are a few things you can do:

First, consult your doctor. 

If you’re visiting the bathroom very often, and you don’t really pee as much, there’s a good chance there’s some sort of UTI that’s bothering you. If that’s the case, you’ll probably end up on antibiotics until it’s all cleared out.

But there could also be other conditions that cause you to urinate more often.

Next up, be mindful of your fluid intake.

 The number one reason for frequent urination is still excessive fluid consumption. So, if you’re drinking too much water or other liquids (you’ll know if this is the case if your urine is completely colorless) – tone it down.

Also, cutting down on caffeine and alcohol could have a positive impact on your urine frequency. Both of these are diuretics, and we all know how often you’re in the bathroom after only a few beers.

Finally, monitor your weight. 

Excess weight can put pressure on the bladder, leading to more frequent urination.


Magnesium may cause some individuals to experience increased urination. 

However, this effect is generally not a cause for concern. 

What’s most likely happening is you’re dealing with water retention, so it’s only a matter of time before everything gets back to normal.

But, if you’re troubled by frequent urination, and you think magnesium has something to do with it, please consult your doctor to determine the best course of action.

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