Magnesium oxide User Reviews & Ratings

• wing
• Taken for 1 to 6 months
• November 4, 2018

For Constipation "Been fighting severe constipation for over 10 years. Gastric surgeon suggested many types of treatment (most otc.) Nothing worked. Stopped taking another of my drugs and started getting migraines so GP put me on magnesium oxide as a prophylactic. One main side effect is diarrhea. Tried it, 1000 mg/day, nothing. Now take 1500 mg of magnesium oxide/ day (m/n/n), it's a miracle. Amazing, since starting that dosage, things have been "normal". Over 3 months now. No constipation, no impaction, only great happiness. After 10 horrible nightmare years, I'm finally free! But remember, always consult your Dr. before adding anything new to make sure it doesn't interfere with other drugs you may be taking. My results may differ from those of others with my specific medical problem."

• Anonymous
• August 17, 2009

For Constipation "After seeing two rectal surgeons, two gastroenterologists, and numerous primary care doctors I was still constipated. I was eating between 50 and 60 grams of fiber a day and drinking lots of water-all no help! I tried Colace but the cramping was really bad. I found taking 250 mg of magnesium at dinner worked! It has been a week and so far so good- I feel so much better. No more enemas or harsh laxatives."

• schme...
• October 2, 2011

For Constipation "I came upon this website as I was looking for different uses of magnesium oxide (MO); my initial reason for taking MO was for nerve pain, but I found it very interesting that people with my same "issues" used it for constipation, heartburn, even nausea, so I decided to "up" my one-a-day dose to at least twice per day, and wow, the difference is quite fantastic! I must say I'm a skeptic by nature but, MO is an inexpensive way to deal with common side effects from pain medicines, etc. Without any hesitation, I recommend this "medication" for anyone with stomach problems, especially females suffering, like myself, from endometriosis, interstitial cystitis, and/or Celiac, or any auto-immune disease."

• swanm...
• April 11, 2016

For Constipation "I started taking thia about a month ago in the morning for my constipation and it works better with way less side effects than both amitiza and linzess. I am so happy I ran across this and found out it unofficially treats issues many of my issues including constipation, migraines, anxiety, sleep troubles, energy issues, etc. Since I have severe constipation, this brings my system some normality and not diarrhea. I love it and it is a new staple."

• Kales...
• April 28, 2016

For Constipation "Most helpful treatment for ibs with constipation ever. I was on zelnorm before which was recalled due to safety. I promised myself to never take rx for chronic issues and try to manage them as much as I can with natural, safe treatments as much as possible. I tell everyone about magnesium, wish doctors would know about it."

• Tiger...
• January 6, 2017

For Constipation "Have had constipation for years and years. Over the counter medicines were not reliable or caused pain. Did my own research and found MO. What a thrill. Inexpensive, reliable, no side effects. After using it for awhile I stopped and found I didnt need it. Now after a very holiday season of eating and drinking I find I'm constipated so I'm back on magnesium for awhile to reset my system."

• SukBuni...
• October 17, 2015

For Constipation "I am taking digestive advantage constipation formula which has 400 mg of magnesium oxide. It is absolutely the only thing that has ever helped me with constipation and never cramps and is completely reliable daily. The best thing ever. I am sure plain Magnesium oxide 300 mg would do the same if they should stop making this. This has been a Godsend now for a year and a half. Like clockwork..."

• HODAG
• Taken for 5 to 10 years
• April 16, 2020

For Constipation "Been using 250 mg daily of magnesium oxide for years now (for constipation. Found out about it by google several years ago. It does sound too good to be true, but when I tried it, wow, it works. No problems with constipation or bloody toilet paper since."

• Steph...
• September 23, 2016

For Hypomagnesemia "I took magnesium glycinate for months with no problem, when I ran out of it I bought this one (magnesium oxide) because it was alot cheaper. Pretty soon I started having a weird cramp in my calves when I walked. I stopped taking it for two weeks, no cramps. Started it again and had cramps immediately (only when walking). So I went ahead and bought the more expensive glycinate, and sure enough I haven't had any cramps. Weird! But I won't take this one ever again."

• nanas...
• October 30, 2011

For Hypomagnesemia "I started this medicine at the suggestion of my D.O. as my magnesium levels were very low and I had bad leg cramps. It did help the cramps quite a bit and my blood levels did return to normal. However, I began to have bad bouts of nausea and vomiting and occasional diarrhea that I had to take additional medication to stop. I took 400 mg but was never advised to take it with food. "

• sabst...
• January 1, 2010

"I began taking magnesium as a supplement for muscle pain and spasms. I couldn't really tell you if I see anything (feel) different but.....I am no longer having constipation (from pain medicines) so I am happy with using it."

• Const...
• Taken for less than 1 month
• December 24, 2020

For Constipation "Most medication I've tried gives me constipation. This time it's an SNRI and I feel like I'm giving birth every morning. BM's are huge and I can't pinch one off. So I've been spending an hour on the pot letting nature slowly take its course, my anus is getting very painful in the process. Can barely sit down the rest of the day. At this point I would usually quit my meds but thought I'd try to manage this side effect instead. Tried stool softeners and they stopped working after a week. Now I've been taking a magnesium oxide 250 mg tablet but that has outlived its usefulness too. So I'm going to take two and see how it goes."

• Rachel
• Taken for 1 to 6 months
• July 29, 2021

Mag-Ox 400 (magnesium oxide) for Constipation "Great for constipation but a choking hazard - add to water instead! When taken as directed, they start to dissolve in the 0.5 second it takes me to pop it in my mouth and attempt to swallow (with water already in my mouth). It instantly becomes grainy and the shape makes it hard to throw it back. I nearly choke every time I take it. So, if you are considering using this, please crush it up and add to water."

• Kelly...
• January 24, 2009

For Constipation "This supplement has really helped with my severe constipation. I stopped taking it and the constipation returned. I must take it with food or it will upset my stomach."

• asian
• November 10, 2011

For Constipation "I have no leg cramps so far and old injury to shoulder is now much better and hard stools are better."

• calcry
• February 27, 2008

For Constipation "i took this while i was pregnant when having alot of constipation and it really helped me i would stay regular."

• curti...
• June 23, 2011

For Hypomagnesemia "No longer have muscle cramps."

• Retired...
• Taken for 1 to 6 months
• May 21, 2023

For Constipation "I have tried anything to treat my severe constipation. Miralax stopped working, Magnesium Oxide is very potent in my case. Takes care of the constipation with no side effects."

• scott...
• Taken for 6 months to 1 year
• July 14, 2021

For Constipation "One person said he wished Doctors knew of this drug, they do !"

• Mag...
• Taken for less than 1 month
• November 18, 2022

Mag-Ox (magnesium oxide) for Constipation "Tried it twice and was vomiting harshly within 5-10 minutes."

• Lidia
• Taken for 6 months to 1 year
• January 24, 2024

For Constipation "Magnesium oxide at night, 400 mg before sleep sends me to the bathroom in the morning when I wake up. I take anxiety medicine and I get constipated real bad. MO solves my problem."