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Magnesium citrate and Diarrhea: What Users Say

Brand names: Citrate of Magnesia, Citroma, LiquiPrep

Diarrhea: mentioned by 43 users (8.6%)

Based on user experiences from 499 Magnesium citrate reviews, the following table shows the most commonly mentioned side effects.

All user comments are moderated by Drugs.com. Each review is verified for relevance and screened for inappropriate content. Side effects are user-reported and not clinically verified.

nausea 16.2%
cramps 10.8%
bloating 10.4%
diarrhea 8.6%
pain 8.0%
constipation 7.4%
gas 5.8%
burning 4.0%
upset stomach 3.8%
bad taste 2.6%

Reviews for Magnesium citrate

Commonly mentioned side effects
  • LRT...
  • Taken for less than 1 month
  • November 10, 2020

For Constipation "IT WORKS, I PROMISE!!!! Ok, so my doctor told me to drink one 10 oz bottle of magnesium citrate at 4 PM this afternoon to empty my bowels before my hysterectomy in the morning. She said if the first one didn’t work, drink another one around 8 PM. Ok, so I drank the one at 4 PM. I swear, I have never had such awful stomach cramps! That was it though. So 8 PM comes around. I drink the second bottle. 15 minutes later, I was having diarrhea so explosive and forceful that I was preparing myself for lift-off to be launched into another galaxy somewhere deep into outer space. I’ll tell you what, if you ever have any constipation problems this stuff will fix it for you! As I mentioned above, I’m going in for a hysterectomy in the morning, but now? I’m wondering if I need to go in for anal reconstruction. This stuff is potent, y’all! If you plan on drinking this, don’t make any plans because you will be cemented to the toilet until your great-great-great grandkids graduate college!"

10 / 10
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527 Report
  • Can...
  • February 1, 2021

For Constipation "One word: Peepoo. I used Mag citrate for colonoscopy prep. 3 minutes after downing the entire bottle, I thought 'hmm, I should have prepared more.' My kids are in the bath still, having no idea I would be almost throwing them out the door. I wasn't fast enough for the first one, so I closed the shower curtain and proceeded to shake the house with what can only be described as a minor earthquake. I turned the tap on and coughed as loudly as I could to try and mitigate the jet engine decibel sound emanating from my butt, but we all knew what was happening. I gave up on leaving my perch, so I got my laptop and planted myself for the foreseeable future. 2 episodes of a crappy Netflix show and 300 experience points on Duolingo before it was safe to poke my head out again. Word to the wise: Prepare! and if you don't have to drink the whole bottle, just don't! Plus side, I can now explain my experience in French. La diarrhée n'est pas un mot assez gross pour décrire ce qui va vous arriver."

10 / 10
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329 Report
  • swe...
  • March 7, 2020

For Constipation "Immediately after drinking one bottle, I begin to feel incredibly bloated, but the real fun starts after about 4-5 hours. Sometimes I barely get my pants pulled down as I dive for the toilet. If I could time my BMs, sometimes they'd be 20 seconds straight of just sheer, vertical spray. I mean, I actually sit there and laugh. After spending 20 minutes or so having diarrhea with gale force winds, I can usually exit the bathroom. Bring air freshener with you because I swear, after drinking Mag Cit, it smells something awful. Then for the next few hours, my wife chants 'run forest run' because I literally have to jump up, clench those cheeks, and make a mad dash to the bathroom. So in short, if you are going to take this, do it in the morning. I would NOT recommend taking this after noon unless you want to be washing your bed sheets in the morning. And for the love of God, don't take this at work!"

10 / 10
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361 Report

Frequently asked questions

  • Mis...
  • June 28, 2021

For Constipation "I wish I read these comments 13 hours ago! So I was in the supermarket at 2 pm, picked up a bottle of magnesium citrate and decided to drink it (WHOLE BOTTLE) right there in the store. Took the empty bottle to the register and paid for it. Figured I'd drink it right then so by the time I get back home it will start to kick in. It didn't start until about 10 pm. I went a few times between 10 pm and 1 am and THEN I fell back asleep and was awakened by exploding diarrhea! No warning, no cramps, no bubbling, no nothing! This has to be a dream...I'm dreaming! I know darn well I just didn't poop in this bed on my white sheets! Needless to say, it wasn't a dream! And it is 3:27 am and I'm afraid to go back to sleep."

2 / 10
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172 Report
  • Thi...
  • Taken for less than 1 month
  • July 16, 2021

For Constipation "Dude. My bum hole is on fire. I have a procedure in the morning, so I had to take this and drink the whole bottle. At first, it didn't work, and after that one hard bowel movement, it has been like a waterfall from my butthole. First, my stomach, it'll sound like the bow of the Titanic bending when sinking in the water, and then pshshhhhh, next thing you know my bum hole is like when the water breaks through the grand ballroom as it's sinking. The pain from the hot, hot fire liquid is almost unbearable, where if I put an ice cube on my bum hole, it would probably turn to steam. By the way, as soon as you wipe, the fiery lava gates are opened back up. But hey, at least you can't say it has any false advertising. This stuff works but should come with a warning label saying, 'Warning, might burn your rectal hole into oblivion'."

8 / 10
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145 Report

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  • Dum...
  • October 5, 2020

For Constipation "10/10 will clear you out. After chugging the entire bottle and downing half a gallon of water, I bloated real bad and felt nauseous. And then two hours later I was peeing from my ass. No, really, I couldn’t leave the toilet. When drinking this, be sure to have some soothing wet wipes and butt cream. You're gonna need it."

10 / 10
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85 Report
  • Raw...
  • Taken for less than 1 month
  • January 28, 2020

For Constipation "I went to the ER for a kidney stone, and the X-ray showed I was really backed up as well. So the ER doc had me drink a bottle of mag citrate. About two hours in my stomach was making sounds that would summon demons, and then I exploded. I was pooping fiery hot lava for over 12 hours. It's been over 24 hours and my stomach is still angry, and I still have diarrhea. Bloody hemmys, poor butthole, probably doesn't have skin left. Do not use this unless you absolutely have to."

10 / 10
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79 Report
  • Col...
  • Taken for less than 1 month
  • December 18, 2015

For Constipation "As I was reading reviews wondering when this kicks in, it happened. Took 10 oz in the afternoon and again in the evening for colonoscopy prep, didn't drink enough water, and only made 1 movement. Thought '30 min to 6 hours til it works? Did I do it wrong? It's been almost 12.' Yes, I did. I didn't drink enough water afterwards. Drink lots of water! I woke up at 2 am and didn't trust a fart. Tummy gurgling, sitting down, browsing the net, and boom. You'll pee out your butt with this, no joke. Give it time and it'll take anywhere from 30 mins to 6 hours to kick in, possibly 12 if you're me and didn't drink water after. Got it for 97 cents in cherry, grape, and lemon flavor. They all taste like super sour candy and it helps to take with Gatorade."

10 / 10
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82 Report
  • ImC...
  • Taken for less than 1 month
  • May 11, 2015

For Constipation "I had surgery, and from the anesthesia and pain medicine, I became very constipated. I literally had no bowel movement whatsoever for 5 days. I started having some stomach pains, I am assuming from gas or just being constipated. I told my doctor what was going on and asked what I could take, and he recommended Magnesium Citrate. I bought a bottle and drank the full 10 oz. About 30 minutes after drinking this, it hit me... I was able to go, and all of the pain and bloating was gone. I was completely relieved. Unfortunately, this story does not end here. Every 15 to 30 minutes for the next 6 hours, I was back in the bathroom, and it was nothing but water... uncontrollable diarrhea. I was literally at a point where I was praying that it would stop."

10 / 10
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65 Report
  • Cho...
  • Taken for less than 1 month
  • October 28, 2019

For Constipation "I took this at about 10 a.m. with a bunch of water and other liquids to mix it up, but it didn't really start working 'til about 1 p.m. At first, it seems a chunk of the stool comes out, and I expected only a little bit of diarrhea afterward. Boy, was I wrong. Seven hours later, and I've still had the urge. I'm now pretty exhausted after constantly drinking water and going to the bathroom. My intestines are really cramping up on me, so I have major pain there. I wouldn't mind the water fountain my butt has become if it weren't for how sore and cramped I feel afterward. I'm going to risk going to sleep now because I'm tired, but I can't help but hear all the noises my stomach is making (it's kind of scaring me). At least I've become less constipated, though."

8 / 10
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40 Report
  • sam...
  • June 22, 2019

For Constipation "I have chronic constipation, and this is the only laxative that works for me. I had to go to the ER for the second time in a few years due to not having a good BM in a few weeks. They recommended the magnesium citrate again for the second time around, and if you are chronically constipated, IT WILL TAKE A WHILE, so make sure you have the next couple of days off. This last time, I took a whole bottle (10 fl oz) around 8 PM at night. I woke up the next morning feeling nothing, so I took another half bottle (5 fl oz), and then within the next 2 or 3 hours, the rumbling and flooding started and lasted the whole day. Make sure you have baby wipes so your bottom doesn’t go too raw, and apply ointment before it all starts and during the event as well. It is 1 AM Saturday morning, and I am having bloating, nausea, and a terrible stomach ache. I knew I was going to have diarrhea, but I didn’t know how gross I would feel the next night, and I’m back to going to the bathroom. VERY effective for people like me, but nasty side effects."

8 / 10
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38 Report
  • Ali...
  • Taken for less than 1 month
  • July 3, 2021

For Constipation "I used this for constipation. I drank an entire 10 oz. bottle around 4 p.m., then had several glasses of water. I had very mild cramping and lots of stomach sounds all evening/night. No BM until the following morning around 9 a.m. Diarrhea, but no cramps. Had 1 more episode of diarrhea, but not a lot. Still feel a little constipated and quite bloated, though. I am a 125 lb. female, so I thought, especially after reading other reviews, that I would have a very strong reaction from this stuff. It worked OK, but nothing crazy for me."

6 / 10
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24 Report
  • Jay...
  • September 30, 2019

For Constipation "So I drank the whole bottle of Magnesium Citrate, and after 30 minutes of using it, my stomach started hurting so bad! I immediately ran to the toilet and sat there, but nothing came out, just excruciating pain!!! Then I started pushing, and it was kind of hard to pass. Then, all of a sudden, it started coming out like an ice cream machine! After about 30 minutes of that, it started coming out like diarrhea! I thought I was finished and stepped out for a second. I heard my stomach making a loud noise, and I ran to the bathroom, and gravy water started coming out!! Like I’m peeing out my butt! I kid you not! I’ve been doing this for 6 hours now, but just gravy water! I thought it was over, and I ate dinner. Then my stomach rumbled again, and I knew to run to the restroom! As soon as I plopped onto the toilet, gravy water!!! I do feel lighter, but my goodness, I need to get ready for work, but I can’t because I’m stuck on the toilet! Not sure if I’ll recommend just yet!!"

7 / 10
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31 Report
  • Jad...
  • Taken for less than 1 month
  • May 6, 2020

For Constipation "I was afraid I was very constipated when my abdomen was bloated and hard, and my back and abdomen hurt. I tried drinking the magnesium citrate and chasing it with a drink of something that didn’t taste horrible. I tried this without drinking water afterward, and it had worked in the past, but I’m telling you that you really have to force yourself to drink a couple glasses of water. If you do not have diarrhea after this, then it didn’t work. I don’t know how, but I drank this bottle, and nothing happened. Definitely drink this bottle at home alone and have a day to not do much. But my best advice is drink water with it."

7 / 10
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28 Report
  • Mis...
  • Taken for less than 1 month
  • June 5, 2016

For Constipation "I had been very constipated since I started dieting and losing weight. I was hardly pooping at all, and it was making my stomach feel very uncomfortable. I started taking Miralax, but that takes days to work for me. So, for immediate relief, I picked up some Mag citrate. I drank the whole 10-ounce bottle, lemon flavor. It tasted tolerable but not great. After 2 hours, still no results, so I drank 3 big glasses of water, and bam, after 10 more minutes, I was on the toilet. This WILL give you watery diarrhea, so be prepared, but the relief is amazing."

8 / 10
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42 Report
  • Anonymous
  • Taken for 1 to 2 years
  • June 18, 2012

For Constipation "My antidepressants and thyroid problem make it extremely hard to go to the restroom every day. I chug this down, and after about 15-30 minutes, it starts. Pros: gets rid of everything, it seems, instant relief. Cons: taste makes me gag, and my stools come out very watery (probably normal), but this goes on until the next day for me, sort of embarrassing being over at a friend's and having to use the restroom. I suggest you take it in the morning to prevent this from happening."

7 / 10
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54 Report
  • Nik...
  • Taken for less than 1 month
  • January 2, 2020

For Constipation "I had really bad constipation pain on my side from not pooping for a couple of days. I took the magnesium citrate, and within 45 minutes, I was going. No really bad cramps or pain, not much discomfort, just felt like I really had to go. I’m on day three, and I’m still having diarrhea."

9 / 10
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27 Report
  • aud...
  • Taken for less than 1 month
  • July 30, 2016

For Constipation "First off, I got the cherry flavor. I'm not sure how to describe its taste. It was like a very sweet cherry soda but with a very salty aftertaste. I was planning on drinking the whole 10 oz bottle but only got about 3/4 of the way through before it started making me nauseous. At first, nothing happened, about an hour in, the bloating I had been experiencing worsened, but then about 2 hours later, I had a very small BM, then another 2 hours, the diarrhea started. It wasn't explosive or anything like that. To be honest, I'm not sure it actually cleared out everything like it is supposed to. I will update in a few days. But it did alleviate the discomfort."

8 / 10
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28 Report
  • Not...
  • Taken for less than 1 month
  • July 18, 2021

For Constipation "So, as many others have before me and will after me, I’m currently writing this from my porcelain safe haven. I haven’t been able to go in over a week, which was concerning to my doctors, as I’ve had chronic diarrhea for 3 years - they still don’t know why. Well, nothing was working, so I turned to the one thing my father-in-law swears always works. I drank the 10 oz grape at 3:40 in the middle of my meal and drank tons of water, it tasted good to me. At 4:30, I finally passed the troublemaker. Then nothing. Great news, right?! Except now it’s 6:40, and I’m committing crimes against my toilet that I’m pretty sure it could press charges for. Now, I considered myself a pro at having diarrhea, but then it's unlike anything I’ve ever dealt with before, think projectile vomiting but from your bum… continuously. I didn’t get any cramps after taking it, and despite the fact I’m currently staked out in the bathroom, I already feel so much better. This stuff is amazing and WORKS."

10 / 10
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14 Report
  • Lee...
  • Taken for less than 1 month
  • May 30, 2019

For Constipation "I personally had a bad experience. Bad constipation was my symptom, like everyone else. Super bloated and backed up. Instructed to take an entire bottle of this. Six hours later, I’m full of regret and wish I was constipated again. I have lost everything inside me in very painful episodes of diarrhea (ten episodes and counting). I’m extremely weak, and I can’t chug water fast enough to keep me hydrated. This stuff is dangerous. If a doc tells you to take a bottle, TRUST ME, take half. Be nice to your tummy :)"

1 / 10
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18 Report
  • I...
  • December 24, 2014

For Constipation "I wasn't able to poop for about 1 week. My friend told me about the magnesium citrate. I drank the full 10 oz. I waited about 2 hr, and let's just say everything that I had eaten about a week ago is finally coming out, and I can't stay too far from the toilet. The poops come out like water. I am using baby wipes. Besides that, I feel better belly-wise."

10 / 10
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27 Report
  • bik...
  • April 7, 2017

For Constipation "I wasn't able to use the bathroom for 3 days. Today I went to the dollar store to buy some cherry magnesium citrate saline laxative. I drank 6 oz of it and 42 oz of water, and an hour later I was able to use the bathroom. 2 hours after that, I had diarrhea. Thank God I was able to use the bathroom! No more constipation."

10 / 10
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19 Report
  • Guy...
  • January 4, 2016

For Constipation "I've been feeling blocked up, not getting everything out for two weeks, and for the last two days, nothing but liquid is coming out, so I'm assuming fecal impaction. Since I was still passing gas, I figured it would be okay to try out a laxative instead of just popping stool softeners with water. I took half of the bottle at 8:30 AM, then figured if it's worth doing, it's worth doing right, so I drank the other half at 9:00. It's 5:00 in the afternoon, and still nothing. I figure I'll take some more softeners tonight, and head out to the pharmacy for tomorrow's preparations. If I can't get it out between another bottle, glycerin suppositories, an enema, some Vaseline, and a pair of XL latex gloves, then I think I'll have to go to the doc."

2 / 10
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21 Report
  • Pai...
  • August 10, 2016

For Constipation "I drank a 10 mL bottle of the lemon-lime flavor at about 7:00 PM and had to spread it out because it made me nauseous, and I couldn't handle the taste. So I finished it at about 8:15 PM, and I had been sipping about 15-20 oz of water along with it. This has been a painful experience so far (it's currently 12:15 AM). I have had intense cramping in my lower abdomen that makes me feel like I constantly have to poop. But I really have not been able to go a whole lot (when I do, it's pure liquid as many other reviews said), but it also made my stomach so upset and caused considerable nausea. So in between bouts of diarrhea, I was dry heaving/retching over the toilet, but no vomit so far. The pain is nearly unbearable, and I just wish it would stop."

5 / 10
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20 Report
  • Tra...
  • Taken for 1 to 6 months
  • August 17, 2018

For Constipation "I definitely recommend this product when you're seriously backed up. Or if you suffer from IBD (irritable bowel disease) with constipation like I do. You know that drill. One to two weeks of constipation and then straight-up diarrhea... Anyway, this is the second time I've used it. The taste is pretty nasty, but it gets it done. You're in for some serious power hosing on your toilet. Make sure you stay near a bathroom after taking it. The first time I took it, my bedsheets ended up as a casualty. Be warned. It's liquid dynamite, lol."

10 / 10
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11 Report

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Reviews may be edited to correct grammar/spelling or remove inappropriate content. Reviews appearing to come from parties with a vested interest are not published. This information is not intended to endorse any medication and should not replace the expertise and judgment of healthcare professionals.