Skip to content


    Exciting News for WebMD Members!

    We've been busy behind the scenes building new message boards for you. You'll have new and easier ways to find messages, connect with others, and share your stories.

    And, this will all be available on your smartphone or other mobile device!

    What Do You Need to Do?

    The message board you're used to will be closing in the coming weeks. While many of your boards will be making the move to our new home, your posts will not. Want to keep a discussion going? Save posts you want to continue (this includes your member profile story), so that you can re-post them in the new message boards.

    Keep an eye here and on your email inbox, we'll be back in touch soon to give you all the information you need!

    Yours in health,
    WebMD Message Boards Management

    magnesium citrate pills and muscle deterioration?
    newgirl2010 posted:
    I just had my annual gyno visit today. I mentioned I was on magnesium citrate pills (600 mgs) to help with constipation. I have not noticed any ill effects from the pills or this dosage. My doctor said (upon asking her about it) high dosages could have an adverse effect on muscle. I didn't inquire further--thinking I would find my answer via google. But haven't been able to find information as to why magnesium might be bad for my muscles. Any ideas? She wasn't talking about my stomach or intestinal tract either. Note: the magnesium simply makes me regular, I don't get diarrhea as a result.

    Also, she didn't do a pap on me this year. I found this unusual as I have had a pap every year since I was sixteen. She mentioned this was a new guideline/policy. Just thought that was interesting...aren't paps one of the main ways to find cervical cancer?
    georgiagail responded:
    Magnesium Citrate can be an effective laxative (it is sometimes used as a prep for a colonoscopy) but in some it can cause weakness in muscles. However, since you haven't noticed this, then don't worry about it. CITRATE - ORAL.aspx?drugid=522&drugname=Magnesium Citrate Oral&source=0

    georgiagail responded:
    Let's try this again...

    Magnesium Citrate is an excellent laxative but in some, it can cause muscle weakness: CITRATE - ORAL.aspx?drugid=522&drugname=Magnesium Citrate Oral&source=0

    newgirl2010 replied to georgiagail's response:
    I am familiar with the bottle of magnesium citrate that works truly as a laxative. The pills, however, just have the effect of keeping me regular...normal stool, etc. There must be a significant difference in dosage between the pill and liquid form. I haven't noticed muscle weakness, though I am a bit of a weakling. perhaps i should scale back to 400 mgs.
    georgiagail replied to newgirl2010's response:
    Yes; the liquid product has considerably more magnesium citrate than your pills. Again, if you don't notice any symptoms, it is unlikely this 600 mgs is causing any issues.


    Helpful Tips

    Be the first to post a Tip!

    Expert Blog

    Below the Belt: Women's Health - Jane Harrison-Hohner, RN, RNP

    From HPV to irregular periods to PMS to fibroids, Jane Harrison-Hohner, RN, is here to share her knowledge and insight...Read More

    Report Problems With Your Medications to the FDA

    FDAYou are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.