Does Plan B cause frequent urination? (3+ factors that may contribute to it)

This article will discuss whether Plan B causes frequent urination as a side effect. We will also discuss some factors that may contribute to this side effect and what you should do if you experience frequent urination after taking Plan B. 

Does Plan B cause frequent urination?

No, Plan B (Levonorgestrel) does not cause frequent urination. It is not a listed side effect of this medication (1). Plan B primarily works to prevent pregnancy by delaying ovulation or interfering with fertilization (2).

Any changes in urination patterns that might occur after taking Plan B could have other potential causes. Women have unique bodies and they can react differently to medications and other situations, like stress, hormonal fluctuations, diet, etc.

If you are experiencing frequent urination after taking Plan B, it’s important to consult a healthcare professional. Your doctor will determine the root cause of your symptoms and will guide you accordingly.

What side effects are common with Plan B?

Plan B, although it does not cause frequent urination, is associated with some side effects. These include (1):

  • Nausea 
  • Vomiting
  • Diarrhoea
  • Bloating
  • Spotting
  • Heavier or lighter menstrual bleeding
  • Tiredness
  • Headaches
  • Mood changes 
  • Tenderness and pain in breasts
  • Dizziness

It is important to note that Plan B may cause severe lower abdomen bleeding which should be reported to a doctor right away. Medications affect people differently and what works for one may not work for another. This is why it’s important to keep a close eye on your side effects.

What factors can affect urination after taking Plan B?

There are some factors that may affect your urination after taking Plan B and these changes might not be directly linked to the medication itself. These factors may include (3):

  • Drinking more fluids than usual, including water or caffeinated beverages
  • Having a urinary tract infection, which is known for causing frequent urination as an early symptom
  • Having emotional stress or anxiety
  • Using other medications that could potentially affect urination
  • Having any underlying disease, like diabetes or kidney disease
  • Being pregnant

These factors can cause frequent urination, which is completely unrelated to the use of Plan B. 

What to do if you’re experiencing frequent urination?

Reach out to your healthcare provider if you’re experiencing frequent urination after taking Plan B. The medication itself is not known for causing this side effect, but women are different and may have different factors affecting their health.

There could be an underlying cause of your frequent urination, which is why consulting a doctor is important. Your doctor will rule out other possible causes and can come up with the best treatment strategy if any disease is diagnosed.

For this, your provider may recommend some diagnostic tests, especially to rule out diabetes and pregnancy. It is also important to inform your doctor about any other symptoms you might be experiencing along with frequent urination.

This can help your doctor with the diagnosis. It is also worth mentioning that Plan B is an emergency contraceptive pill and should not be used for long-term contraception.

If you don’t have a promising contraception method currently, please discuss this with your doctor as well. Remember, safe and effective use of medications is an important key to achieving your desired therapeutic outcome.


In this article, we have discussed that Plan B is not associated with frequent urination. We have also discussed some factors that may affect your urination and what you should do if you experience it. 

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