Compare lactulose vs. Fibercon

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


(Calcium Polycarbophil)

Coming soon.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.
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Reviews & ratings
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Reviews for Fibercon (Calcium Polycarbophil)
55% vs. Generlac (Lactulose)
72% vs. Generlac (Lactulose)
21% vs. Generlac (Lactulose)
Side effects

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

FDA side effect reports for lactulose »

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

FDA side effect reports for Fibercon »
How it works
Coming soon.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.
Type of medication
Coming soon.
Available as
  • Liquid
  • Pill
Used for (click to learn more)
  • Constipation Hepatic encephalopathy; Treatment and Prophylaxis
Risk factors for serious side effects
Coming soon.
  • 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 »
Pregnancy category
BFDA pregnancy category (Probably safe)

Research studies with animals haven’t found a risk to unborn babies, but it hasn’t been properly studied in humans.

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
No specific alcohol-related info.No specific alcohol-related info.
No specific food-related info.
  • 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.No specific kidneys and liver-related info.
No specific sex-related info.No specific sex-related info.
No specific sleep-related info.No specific sleep-related info.
No specific weight-related info.No specific weight-related info.
Upsides and benefits
Coming soon.
  • 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.
Downsides and risks
Coming soon.
  • 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.
Tips from our pharmacists for people taking the medication
Coming soon.
  • 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.
Learn more
More about lactuloseSide effectsReviews & ratingsFDA package insert
More about FiberconSide effectsReviews & ratingsAlternativesFDA package insert