Review: could Lactulose cause Constipation?


Constipation is found among people who take Lactulose, especially for people who are female, 60+ old , have been taking the drug for < 1 month, also take medication Oxycontin, and have Constipation . We study 15,303 people who have side effects while taking Lactulose from FDA and social media. Among them, 992 have Constipation. Find out below who they are, when they have Constipation and more.

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Lactulose has active ingredients of lactulose. It is often used in constipation. (latest outcomes from Lactulose 15,692 users)


Constipation has been reported by people with breathing difficulty, fever, weakness, diarrhea, pneumonia (latest reports from 95,174 Constipation patients).

On Aug, 28, 2016

15,303 people reported to have side effects when taking Lactulose.
Among them, 992 people (6.48%) have Constipation

Number of reports submitted per year:

Could Lactulose cause Constipation?

Time on Lactulose when people have Constipation *:

  • < 1 month: 72.73 %
  • 1 - 6 months: 27.27 %
  • 6 - 12 months: 0.0 %
  • 1 - 2 years: 0.0 %
  • 2 - 5 years: 0.0 %
  • 5 - 10 years: 0.0 %
  • 10+ years: 0.0 %

Gender of people who have Constipation when taking Lactulose *:

  • female: 54.37 %
  • male: 45.63 %

Age of people who have Constipation when taking Lactulose *:

  • 0-1: 0.36 %
  • 2-9: 0.95 %
  • 10-19: 1.66 %
  • 20-29: 2.26 %
  • 30-39: 12.35 %
  • 40-49: 13.78 %
  • 50-59: 19.12 %
  • 60+: 49.52 %

Severity if Constipation when taking Lactulose **:

  • least: 0.0 %
  • moderate: 33.33 %
  • severe: 0.0 %
  • most severe: 66.67 %

Top conditions involved for these people *:

  • Constipation (134 people)
  • Pain (132 people)
  • Schizophrenia (96 people)
  • Hypertension (70 people)
  • Urinary Tract Infection (69 people)

Top co-used drugs for these people *:

  • Oxycontin (174 people)
  • Furosemide (166 people)
  • Omeprazole (134 people)
  • Aspirin (134 people)
  • Folic Acid (130 people)

* Approximation only. Some reports may have incomplete information.

** Reports from social media are used.

How to use the study: print a copy of the study and bring it to your health teams to ensure drug risks and benefits are fully discussed and understood.

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NOTE: The study is based on active ingredients and brand name. Other drugs that have the same active ingredients (e.g. generic drugs) are NOT considered.

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