Compare Fibercon vs. Magnesium Citrate

Head-to-head comparisons of medication uses, side effects, ratings, and more.

Fibercon
(Calcium Polycarbophil)

Citrate Of Magnesia
(Magnesium Citrate)

Helps get things moving. Fibercon (Calcium Polycarbophil) is a natural fiber laxative that's safe enough to take during pregnancy. Just make sure you take it with plenty of liquid.Treats constipation. Citrate Of Magnesia (Magnesium Citrate) works well if you need to really get things moving, but it's not a good medicine to manage chronic constipation.
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Reviews & ratings
Button Group. All currently active
Button Group. All currently active
3.9625Fibercon
Reviews for Fibercon (Calcium Polycarbophil)
45%
of people say Fibercon (Calcium Polycarbophil) is worth it
28%
say it works well
21%
say it's a big hassle

Not enough reviews for this drug. Help someone out, leave a review!

Side effects
FiberconMagnesium Citrate

We haven’t found good data for Fibercon side effects.

FDA side effect reports for Fibercon »

We haven’t found good data for Magnesium Citrate side effects.

FDA side effect reports for Magnesium Citrate »
How it works
FiberconMagnesium Citrate
Fibercon (Calcium Polycarbophil) is a fiber-based laxative. It adds bulk and moisture to your intestine, which softens stool and makes it easier to pass.Citrate Of Magnesia (Magnesium Citrate) is an osmotic and stimulant laxative. It uses osmosis to keep more water in your intestine, which softens your stool and makes it easier to pass. It also causes waves of contractions (peristalsis) in your intestine muscles to push stool through.
Type of medication
FiberconMagnesium Citrate
Laxative
Bulk-producing
Over-the-counter
LaxativePrescription or OTC
Available as
FiberconMagnesium Citrate
  • Pill
  • Liquid
Used for (click to learn more)
FiberconMagnesium Citrate
Risk factors for serious side effects
FiberconMagnesium Citrate
  • Taking with calcium supplements
  • Taking with oral bisphosphonates
  • Age 60 or older
  • Malignancy
  • Other condition that causes blockage or narrowing of bowel
  • Taking medications that cause constipation
Detailed Fibercon (Calcium Polycarbophil) risks & warnings »
  • Age 60 or older
  • Malignancy
  • Other condition that causes blockage or narrowing of bowel
  • Taking medications that cause constipation
  • Taking with medications that cause electrolyte imbalance
  • Age 60 or older
  • Women of childbearing age
  • Taking Citrate Of Magnesia (Magnesium Citrate) if you have kidney disease and neuromuscular disease
  • Taking Citrate Of Magnesia (Magnesium Citrate) if you have neuromuscular disease
  • Kidney disease
  • Taking other magnesium-containing medicines or supplements
Detailed Citrate Of Magnesia (Magnesium Citrate) risks & warnings »
Pregnancy category
FiberconMagnesium Citrate
NFDA pregnancy category (Unknown)

The FDA hasn’t classified this medicine’s effects on unborn babies. Talk with your doctor about this medicine if you’re pregnant or planning on it.

See the FDA package insert
NFDA pregnancy category (Unknown)

The FDA hasn’t classified this medicine’s effects on unborn babies. Talk with your doctor about this medicine if you’re pregnant or planning on it.

See the FDA package insert
Alcohol
No specific alcohol-related info.No specific alcohol-related info.
Food
  • Talk to you doctor about eating certain foods and getting more exercise to help prevent your constipation.
  • Talk to you doctor about eating certain foods and getting more exercise to help prevent your constipation.
Kidneys and liver
No specific kidneys and liver-related info.
  • Ask your doctor before taking Magnesium Citrate if you have kidney disease, are on a limited magnesium or sodium diet, have stomach pain, nausea, vomiting or had sudden changes in your stool for more than 2 weeks.
  • Magnesium can build up in your blood if you have kidney problems. High magnesium levels can be dangerous and affect your heart, cause weakness and lower your calcium levels. Don't take Citrate Of Magnesia (Magnesium Citrate) if you have problems with your kidneys or are taking other magnesium-containing medicines. or supplements..
Sex
No specific sex-related info.No specific sex-related info.
Sleep
No specific sleep-related info.No specific sleep-related info.
Weight
No specific weight-related info.No specific weight-related info.
Upsides and benefits
FiberconMagnesium Citrate
  • Some people felt Fibercon was a hassle but still worth it.
  • It's safe to use short-term during pregnancy and breast-feeding as long as you take it with plenty of liquid, but you should still check with your baby doctor first.
  • Less gas and bloating compared to psyllium laxative products.
  • Really strong laxative that gets things moving fast.
  • Can also be used to prep your bowel before you go for surgery or colonoscopy. Your doctor will give you specific instructions if you use it this way.
Downsides and risks
FiberconMagnesium Citrate
  • You may have to take Fibercon daily for 1-3 days to see full effects.
  • If you don't take it with enough liquid, it could swell and block your throat and cause choking.
  • Not the best choice for people who have swallowing problems or aren't able to drink lots of liquids.
  • Can cause heartburn, gas, and belly cramps.
  • It doesn't work for everyone and some people feel it's a hassle.
  • Some brands are of Magnesium Citrate are tinted red and can change the color of your stool.
  • Can cause dizziness, weakness, diarrhea, and the feeling that you "have to go right now".
  • Magnesium Citrate contains magnesium which prevents certain medicines from working properly. Make sure you take your dose of Magnesium Citrate at least 2 hours before or after other medicines.
  • You can't take it for more than a week or so.
Tips from our pharmacists for people taking the medication
FiberconMagnesium Citrate
  • It's important to take each dose with at least 8 ounces (a full glass) of water or other liquid. Works in about 12-72 hours.
  • Don't take more than 8 caplets in a 24 hour period without asking your doctor first and not for more than one week.
  • Don't take Fibercon within 2 hours before or after taking other medicines. It may interact and affect how they work.
  • If you take Fibercon then have chest pain, vomiting, trouble breathing or swallowing, get medical help immediately.
  • Ask your doctor before taking Fibercon if you have stomach pain, nausea, vomiting or had sudden changes in your stool for more than 2 weeks.
  • Ask your doctor about giving Fibercon to anyone younger than 12 years.
  • Talk to you doctor about eating certain foods and getting more exercise to help prevent your constipation.
  • Magnesium Citrate starts working in 30 minutes to 6 hours.
  • Works fast, so don't take it too close to bedtime.
  • The dose is different for adults and children so check the label and ask your doctor about giving to anyone younger than 6 years.
  • It tastes better if you chill the bottle before you take it. Make sure you drink 8 ounces (a full glass) of water or other liquid after each dose.
  • Ask your doctor before taking Magnesium Citrate if you have kidney disease, are on a limited magnesium or sodium diet, have stomach pain, nausea, vomiting or had sudden changes in your stool for more than 2 weeks.
  • Stop taking Magnesium Citrate and call your doctor if you have pain, swelling or bulging in your belly, rectal bleeding, or haven't had a bowel movement after taking.
  • For short-term use. Don't use it for more than one week.
  • Talk to you doctor about eating certain foods and getting more exercise to help prevent your constipation.
Learn more
More about FiberconSide effectsReviews & ratingsAlternativesFDA package insert
More about Magnesium CitrateSide effectsReviews & ratingsAlternativesFDA package insert