Skip to content

orlistat

Side Effects

List orlistat side effects by likelihood and severity.

The following side effects are associated with orlistat:

Common side effects of orlistat:

  • Acute Infection of the Nose, Throat or SinusSevere
  • Discharge of Stools When Passing GasLess Severe
  • Having Frequent Bowel MovementsLess Severe
  • Loose StoolsLess Severe
  • Oily Leakage from the RectumLess Severe
  • Oily StoolsLess Severe
  • Stomach CrampsLess Severe
  • Strong Desire to have Bowel MovementLess Severe
  • Unable to Control Bowel MovementLess Severe
  • Vitamin D DeficiencyLess Severe

Infrequent side effects of orlistat:

  • GallstonesSevere
  • Infectious DiarrheaSevere
  • Lower Respiratory Tract InfectionSevere
  • AnxiousLess Severe
  • Any Disease of the TeethLess Severe
  • Deficiency of Vitamin ELess Severe
  • DizzyLess Severe
  • Feel Like Throwing UpLess Severe
  • Gum DiseaseLess Severe
  • Head PainLess Severe
  • Irritation of the RectumLess Severe
  • Lack of Vitamin ALess Severe
  • Low EnergyLess Severe
  • Muscle PainLess Severe
  • Problem with PeriodsLess Severe
  • Soreness of the Rectal AreaLess Severe

Rare side effects of orlistat:

  • Abnormal Liver Function TestsSevere
  • Acute Inflammation of the PancreasSevere
  • Allergic Reaction caused by a DrugSevere
  • Bleeding of the Stomach or IntestinesSevere
  • BronchospasmSevere
  • Giant HivesSevere
  • HivesSevere
  • Kidney StoneSevere
  • Life Threatening Allergic ReactionSevere
  • Liver FailureSevere
  • Low Blood SugarSevere
  • RashSevere
  • Urinary Tract InfectionSevere
  • Yellowing of Skin or Eyes from Liver ProblemsSevere
  • ArthritisLess Severe
  • BackacheLess Severe
  • High Amount of Oxalic Acid in the UrineLess Severe
  • Inflammation or Infection of VaginaLess Severe
  • ItchingLess Severe
  • Loss of AppetiteLess Severe
  • Middle Ear InfectionLess Severe
  • Swelling of the AbdomenLess Severe
  • Throwing UpLess Severe
  • Visible Water RetentionLess Severe

Selected from data included with permission and copyrighted by First Databank, Inc. This copyrighted material has been downloaded from a licensed data provider and is not for distribution, expect as may be authorized by the applicable terms of use.

CONDITIONS OF USE: The information in this database is intended to supplement, not substitute for, the expertise and judgment of healthcare professionals. The information is not intended to cover all possible uses, directions, precautions, drug interactions or adverse effects, nor should it be construed to indicate that use of a particular drug is safe, appropriate or effective for you or anyone else. A healthcare professional should be consulted before taking any drug, changing any diet or commencing or discontinuing any course of treatment.

More about Drugs and Medications

Newsletters

Subscribe to free WebMD newsletters.

  • WebMD Daily

    WebMD Daily

    Subscribe to the WebMD Daily, and you'll get today's top health news and trending topics, and the latest and best information from WebMD.

  • Men's Health

    Men's Health

    Subscribe to the Men's Health newsletter for the latest on disease prevention, fitness, sex, nutrition, and more from WebMD.

  • Women's Health

    Women's Health

    Subscribe to the Women's Health newsletter for the latest on disease prevention, fitness, sex, diet, anti-aging, and more from WebMD.

By clicking Submit, I agree to the WebMD Terms & Conditions & Privacy Policy

URAC: Accredited Health Web Site TRUSTe online privacy certification HONcode Seal AdChoices