Compare Benefiber vs. Magnesium Citrate

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

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Benefiber

Over-the-counter
Supplements fiber and relieves constipation.

Benefiber is an excellent fiber supplement. It's easy to use and doesn't clump up like other supplements.

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.

Upsides
  • Research shows soluble fibers like Benefiber are useful for people who don’t meet daily fiber recommendations.
  • Benefiber completely dissolves in liquids and doesn’t have a gritty texture like other similar fiber supplements.
  • Comes in multiple forms, including chewables, powders, and caplets.
  • Should cause less gas and bloating than other fiber supplements.
  • Has multiple health benefits including lower blood sugar and cholesterol levels.
  • 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
  • If you have a gluten intolerance, celiac disease, are pregnant, or are nursing, check with your doctor before taking Benefiber.
  • Taking too much Benefiber can cause constipation, gas, and bloating.
  • Benefiber doesn’t bulk up stool as much as insoluble fiber supplements.
  • Some people's bodies can become dependent on fiber supplements.
  • 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.
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Used for
Dosage forms
  • Liquid
  • Pill
  • Chewable tablet
  • Liquid
No pricing information available
No pricing information available
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Reviews
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Side effects
The Benefiber FDA package insert doesn’t have numbers about how common side effects are.
The Citrate Of Magnesia (Magnesium Citrate) FDA package insert doesn’t have numbers about how common side effects are.
Risks and risk factors
  • Warnings
    • Pregnant
    • Nursing
    • Kidney stones
  • Fiber intake
  • Medication interactions
See more detailed risks and warnings
  • Bowel blockage
    • Age 60 or older
    • Malignancy
    • Other condition that causes blockage or narrowing of bowel
    • Taking medications that cause constipation
  • Electrolyte imbalance
    • Taking with medications that cause electrolyte imbalance
    • Age 60 or older
  • Risk to fetus
    • Women of childbearing age
  • Worsening of neuromuscular conditions
    • 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
  • High magnesium levels
    • Kidney disease
    • Taking other magnesium-containing medicines or supplements
See more detailed risks and warnings