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Magnesium citrate and Constipation: What Users Say

Brand names: Citrate of Magnesia, Citroma, LiquiPrep

Constipation: mentioned by 38 users (7.6%)

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 16.8%
cramps 11.4%
bloating 11.0%
diarrhea 10.4%
constipation 7.6%
pain 7.2%
upset stomach 7.2%
gas 6.6%
burning 4.4%
stomach pain 2.8%

Reviews for Magnesium citrate

Commonly mentioned side effects
  • Anonymous
  • September 20, 2020

For Constipation "Maybe I’m just broken, but magnesium citrate hasn’t worked for me. I’ve been hospitalized for severe constipation. I had some MiraLax with lunch & chugged a 10oz bottle of Magnesium Citrate 1.5hrs after dinner. I thought this was a good combo for someone with my level of constipation experience. 1st mistake: taking it at night. I was already bloated but WOW. The gas & bloating was at a whole new level. I couldn’t even move without feeling like I’d pop. I was the blueberry girl in Willy Wonka. At 1 am, I fell asleep. At 10 the next morning, I was finally able to leave bed. I had a steady stream of butt pee and then, that all-too-familiar feeling of constipation. I was able to fart out a few soft pellets the rest of the day, but that’s it. I’m still severely bloated with sharp cramps. It’s been 26 hours since I chugged MC and I’m left constipated with a burning cinnamon ring, a balloon belly and gas to power New York City. I’m a lean, active 24yr old (mostly vegan.) Why can’t I go?"

4 / 10
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155 Report
  • Anonymous
  • August 8, 2015

For Constipation "I was diagnosed with IBS-C a few years ago, so it's been a struggle trying to become and stay regular. I take Miralax a few times a week, but it doesn't seem to do much unless I take a full capful, and then it does too much. So anyway, my boyfriend had been complaining of constipation, so I took him to Walgreens to grab some Mag Citrate. I decided to grab a bottle as well. We returned home, drank the 10 oz bottles (I got Cherry, he got Lemon -- both taste horrible -- very very sour, so just down it!) and before we knew it, after about two hours or so, we were both fighting for the bathroom. Literally fighting! Luckily, we have two restrooms, but one is on the other side of the house, and when you gotta go, YOU GOTTA GO! This stuff is wonderful!"

10 / 10
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73 Report
  • Gia...
  • November 6, 2019

For Constipation "I feel the need to share this, only because I have never experienced being so constipated before. I currently have kidney stones, which they sent me home with Norco for pain. I knew constipation was a side effect, but I wasn’t expecting to have a plug and me straining for over an hour. Not only was I in dire pain because the hard plug of stool was literally trying to come out of my body. I waddled out of the bathroom and cried to my boyfriend. His mom recommended I try magnesium citrate. Definitely get the lemon flavor!! I drank the whole bottle around 10 PM because I was desperate, hours passed and it wasn’t working. I kept reading reviews and everyone said to hydrate! So I frantically started drinking water... still nothing. Until finally, someone had written to drink warm water... I drank two glasses. And around 3 AM, I was able to pass the plug. It was painful, but it worked!"

8 / 10
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38 Report

Frequently asked questions

  • Got...
  • Taken for 2 to 5 years
  • May 1, 2016

For Constipation "Ever since I was diagnosed with IBS, I try to avoid dairy so I won't explode like I am now. Clearly, I have an issue with it. Well, for whatever reason, as of late, dairy consumption has constipated me to high heaven. Decided, after a week and a half of frustratingly small bowel movements and a ton of straining, it was time to drink the 'poop juice,' as I call it. Within 45 minutes, I had to sprint to the bathroom, and my God, didn't think I'd make it in time. It's now been a few hours, and I only really left the bathroom twice. Found it easier to just stay on the toilet. I'm now reading everyone's reviews because I needed something to pass the time, and these are usually hilarious! If the poop juice doesn't work for you, go to a doctor or ER!!"

10 / 10
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50 Report
  • Cyn...
  • Taken for less than 1 month
  • February 15, 2020

For Constipation "Started a new medication about a month ago, and it has caused constipation as a side effect. For 8 days in a row, I was unable to go #2, and I was starting to feel pretty awful. Found magnesium citrate on Amazon with really high reviews. Was nervous to use it because people said it could be really harsh on the tummy. I drank 1/2 bottle (cherry flavor) and was cramping in my abdomen 22 minutes later (I didn't realize it needed to be taken on an empty stomach, oops). 8 minutes or so later, the cramps lifted a little, and I had my first BM. It wasn't easy, just loose. Super glad I didn't drink the entire thing because it worked right away for me. Phew. Will use again in case of emergency."

9 / 10
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34 Report

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  • Dom...
  • Taken for less than 1 month
  • May 28, 2015

For Constipation "Traveled to the Dominican and got traveler's diarrhea. Took too much Imodium and ended up being severely constipated for two weeks. My stomach was so huge we called it my 'Dominican Baby.' I tried three different laxatives-nothing. I then heard about Mag-Citrate. Drank a whole bottle of the cherry (not bad-super sweet like candy) and waited. The bottle said 30 minutes to 6 hours for action. I waited 3 hours, then fell asleep and woke up. I was so disappointed. It had been over 12 hours and nothing but gas. This was when I decided to go to the hospital. A few hours waiting there and all of a sudden...relief after drinking a coffee! If it doesn't work right away, give it time, it will! I also recommend coffee to help it along :)"

9 / 10
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39 Report
  • Can...
  • Taken for 1 to 6 months
  • July 12, 2015

For Constipation "When going through chemotherapy, many patients experience constipation. After trying every pill laxative, I found magnesium citrate and boom, it became a regular thing to do the week after chemo. Fast forward a couple of years, I had my boobs reduced, this time, the anesthesia completely blocked me. It's not enough that my boobs look like they had a fight with Freddy Krueger, but I can't use the bathroom! But of course, I used magnesium citrate and again, problem solved."

9 / 10
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43 Report

More FAQ

  • Glo...
  • Taken for less than 1 month
  • January 7, 2017

For Constipation "I just spent about an hour to an hour and a half reading all of these reviews after taking MC. I am now at the next step of sitting on the toilet, clutching my Charmin. I am on an antidepressant, and it has caused me chronic constipation. Having constipation frequently throughout my life, I was used to going a few days without pooping. After 7 days of not going, my boyfriend forced me to take this, saying that it was the most amazing thing ever and that I would feel like a new person. Needless to say, I sent him a text telling him how much I loved him. When they say don't trust a fart, they mean it! I felt a slight fart coming, and after clenching a little, realized that this was no normal fart... it was a shart. Run if you feel a fart."

10 / 10
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33 Report
  • Zhe...
  • Taken for 2 to 5 years
  • March 14, 2016

For Constipation "If I haven't hardly gone to the bathroom in a few days, and I feel bloated and blocked up, like there's a plug in my gut, Magnesium Citrate works. Every time. Sometimes it takes longer than others, but I don't mess with anything else. Drink the whole bottle. Follow with water or Gatorade. Wait 3-12 hours. Sometimes the constipation and bloating makes it really hard to focus, so I'll drink it before bed, and wake up to go to the bathroom. Set aside a few hours you can be near a home toilet, as there's a decent chance you'll need to clean up afterward!"

10 / 10
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33 Report
  • Wow...
  • July 19, 2016

For Constipation "I had surgery almost a week ago, and the pain medication gave me some insane constipation. I sent my girlfriend to the drug store to find a fast-acting laxative. When she got there, she asked the pharmacist what the best option was, and they suggested magnesium citrate. I am glad they did. I needed immediate relief. He directed me to drink just about half, and it should work within an hour. Well, I threw it back, and though it was definitely over an hour, it worked! Highly recommend this product. I'm actually still sitting here, making sure it's all out. Once I got my first movement out of the way, there was no stopping the rest. Amazing."

10 / 10
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30 Report
  • loo...
  • November 11, 2012

For Constipation "Iron pills make one constipated. Magnesium citrate 2x a month relieves problem. Recommend replenishing water and a few vitamins after losing so much fluid. Advise taking it on a day off to prevent embarrassing and uncontrollable potty trips. I take it at night before bed, next morning it works. I stay at home for most of the day until the mission is accomplished. Good luck!"

10 / 10
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39 Report
  • fin...
  • Taken for less than 1 month
  • March 29, 2015

For Constipation "I am on a medicine, the main side effect is constipation. So I take a stool softener daily. Last week I didn't have any. So I tried to increase fiber, but it didn't work... I ended up going 10 days without any type of bowel movement or even gas to speak of. I got a bottle of cherry magnesium citrate, drank the whole bottle followed by 12 oz of water. And within 3 hours, I finally got results. I had a small amount of stomach pain, and I continued to go to the bathroom for the next 5 hours after I went the first time. I felt lighter and empty, I recommend this, it works. I will say I got the cherry, it tasted like a cherry Sweet Tart. The taste kind of lingers, but it was not too bad."

10 / 10
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36 Report
  • Yos...
  • Taken for less than 1 month
  • June 25, 2016

For Constipation "Amazing stuff!! I was constipated for over two weeks, hardly getting anything out and in constant pain, still having to go to work. Tried everything: senna, Miralax, Ducolace, and a few enemas. Got a bottle of mag citrate, drank it all at once with water. 4 or 5 hours later, it was the scene from Dumb and Dumber when Lloyd got Harry with the turbo lax. LOL. P.S. I'm a 6'4", 210 lb man, so one bottle should be plenty for most."

10 / 10
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29 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
  • Von...
  • October 28, 2016

For Constipation "I'm on my second bottle as we speak. I drank the first one around noon today. So far, nothing. This is typical for me. I am on some heavy narcotics for a sternum that didn't heal properly after open-heart surgery last year. I take Linzess, two Colace tabs, and Miralax daily and still deal with life-stopping constipation. When I hit the 5-day mark of no BMs, I break out the magnesium citrate, chilled and cherry-flavored. It does work, but I never know how long it will take. I'm grounded to the house until something breaks."

6 / 10
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27 Report
  • Fir...
  • July 26, 2017

For Constipation "I have used magnesium citrate three times, and it works like magic! I have gastro issues that are undiagnosed as of now, so needless to say, I get very backed up, bloated, and feel pregnant. One bottle of the grape drink and fireworks in the bathroom every time! Each time that I go, I feel relieved and in a much better mood. I believe that my body is responding to getting rid of all of the toxic poo and thanking me for it. Before, my stomach is hard, and I look pregnant. After, it is very squishy, and I feel like I lose five or more pounds. It is a miracle drink. Please take this if you have any of these issues. It will save you a trip to the ER."

10 / 10
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22 Report
  • Cma...
  • Taken for less than 1 month
  • September 19, 2019

For Constipation "Drank an entire bottle of lemon magnesium citrate around 10 AM for bad constipation. About an hour later, small rabbit poop, some gurgling, sat home afraid to leave the house all day due to reading all of these reviews. By 3 PM, got the courage to leave, run around, and go to the gym. Home around 7 PM - ate dinner, and within 20 minutes, peeing out of my butt and feel 15 lbs lighter."

8 / 10
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19 Report
  • Lyn...
  • June 22, 2015

For Constipation "which causes constipation. And this is the only thing that clears me out. With IBS, you get stopped up a lot. They give you a stool softener and powder Miralax. But the indoor plumbing just won't work... my Dr told me to do this when I feel bloated and with IBS pains."

8 / 10
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25 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
  • Ano...
  • Taken for less than 1 month
  • April 13, 2019

For Constipation "I regularly get constipated when I travel. On a recent trip, I got constipated again. I took bisacodyl tablets, then later used glycerin suppositories. Nothing worked, so I called the advice nurse, who told me to take MC (magnesium citrate) when I got home if other stuff did not kick in. I drank one 8 oz bottle of MC at 4 p.m., and by 10 p.m. it was working. Had to go hourly until 6 a.m. MC is definitely more powerful than other laxatives and is recommended when the usual other milder products do not work."

10 / 10
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14 Report
  • Ppr...
  • January 3, 2017

For Constipation "I was constipated for what felt like a whole week. I tried Miralax, enemas, yoga, ileocecal massage...nothing worked! I was in pain. Super bloated. Felt like I'd gained ten pounds. I actually took magnesium chloride, not citrate...and about 2.5 hours later, I experienced the glorious poop chute waterfall. So relieving. I'll always keep magnesium on hand from now on."

10 / 10
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17 Report
  • Kat...
  • Taken for less than 1 month
  • November 17, 2017

For Constipation "I went to the ER with severe stomach and chest pain and was told I have a partial blockage and to try MC to help pass it. I have a nerve issue, which makes my bowels move very slowly, so I get constipated a lot, though this was my first really severe case, so I decided to try it. I took half the bottle yesterday and nothing happened, so I thought it wouldn’t ever work. Took the other half today, and it took about 6-7 hours to work, but it definitely works, a little too well! Got the blockage out after a lot of time and straining and thought that was it. I’m better. Nope! I have now been in and out of the bathroom for 5 hours! I gave it 8 stars because it does work, but it says 'gentle,' and it is anything but gentle!! Send help, lol!"

9 / 10
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15 Report
  • Hoo...
  • Taken for 1 to 6 months
  • April 18, 2017

For Constipation "I get constipated quite often, and I have tried everything, nothing but MC works for me. I really dislike the taste, so I mix either the lemon or cherry with some diet 7UP, and it helps a lot. I drink the whole bottle at once. You will definitely want to stay close to a bathroom!"

10 / 10
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12 Report
  • Swe...
  • Taken for less than 1 month
  • March 17, 2017

For Constipation "I've started on Wellbutrin, and man, I've been extra, extra backed up. This time I hadn't gone in almost a week after trying stool softeners, senna, bulk laxatives. I even ate 3 servings of broccoli one night with high hopes. Lol. But I remembered my coworker was extremely constipated while she was on chemo last year, so I asked her what to do, and she said magnesium citrate. Super cheap, and the cherry flavor, while sour, is actually quite delicious. I had a small solid bowel movement about 30 minutes after finishing the whole bottle (and then 16 oz of water), so I was disappointed, but about 3 hours in, I was singing its praises. Went to bed with no accidents and woke up with more liquid stool, but no complaints here. I'll never use anything else again!"

10 / 10
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15 Report
  • fin...
  • March 4, 2015

For Constipation "Four days after surgery, narcotics, and some serious constipation, I purchased some stool softening pills and some milk of magnesia and tried both. Neither had worked too well for me. I had begun to lose my appetite and had a hard time sleeping because of the pain. I purchased some grape magnesium citrate recommended by my doctor, and at 2:00 PM today, I took about 3 oz just to be careful. Only twenty minutes later, I had to go to the bathroom and had a little bit of luck. Then again, around 4:00, I took another 3 oz. At 8:00, it took full effect. I was able to empty out most, but had to keep running to the bathroom about every half hour for a few hours. It's close to diarrhea when it comes out, but not too bad. I highly recommend!"

10 / 10
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15 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.