Plan B One-Step Side Effects by Likelihood and Severity

COMMON side effects


If experienced, these tend to have a Severe expression

  • Abnormally Long Or Heavy Periods
  • Absence Of Menstrual Periods
  • Bleeding Not Related To Menstrual Period
  • High Blood Sugar

If experienced, these tend to have a Less Severe expression

  • A Decrease In How Often A Woman Menstruates
  • An Ovarian Cyst
  • Diarrhea
  • Dizziness
  • Enlargement Of An Ovary
  • Headache
  • Low Energy
  • Mood Changes
  • Nausea
  • Nervousness
  • Stomach Cramps
  • Visible Water Retention
  • Vomiting
  • Weight Gain

INFREQUENT side effects


If experienced, these tend to have a Severe expression

  • A Skin Rash
  • Breastmilk Production Not Associated With Childbirth Or Nursing
  • Depression

If experienced, these tend to have a Less Severe expression

  • Acne
  • Altered Interest In Having Sexual Intercourse
  • Breast Pain
  • Difficulty Sleeping
  • Drug-Induced Hot Flashes
  • Hair Loss
  • Hirsutism, A Condition Of Hair Growth On Parts Of The Body Normally Without Hair
  • Yellow-Brown Patches On Skin

RARE side effects


If experienced, these tend to have a Severe expression

  • Obstruction Of A Blood Vessel By A Blood Clot

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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.