Side effects of Postinor 2 (P2) on menstruation

Pill consumption

Key Takeaways:

  • One of the most common side effects of Postinor-2, also called P2 is alterations to menstrual cycle. However, this pill does not damage the womb or affect fertility.
  • The side effects of Postinor-2 on menstruation include changes in the duration of the period, heavier menstrual flow, and irregular menstrual cycle patterns.

Looking out for a good emergency contraceptive solution to prevent pregnancy after having an unprotected sex? well, you are not alone. Postinor 2 is one of many emergency contraceptives in Nigeria that is affordable out there. However, you need to be aware of its side effects including effects on menstruation.

Postinor 2 is entirely safe with no fatal or adverse side effects when not abusively used. In a nutshell, Postinor 2 works by delaying ovulation as well as blocking the passage of sperm through the cervix to prevent pregnancy.

In most cases, the side effects of Postinor 2 as shown below last for a few days and things gets back to normal, but if the situation persists, you should seek the support of a medical practitioner.

You can read more on Postinor 2, how it works and how to take it at Postinor 2 contraceptive, dosage, efficacy and side effects.

Side effects of Postinor 2 on menstrual cycle

Postinor 2 can alter the menstrual cycle, causing missed periods, particularly in people who use it regularly. However, it often doesn’t cause serious side effects, even when taken more than once in a cycle. 

Side effects of Postinor 2 on menstruation include:

  • Changes in the length of the menstrual cycle
  • Seeing period later or earlier than expected
  • Changes in volume of flow (such as heavier or lighter flow)
  • Spotting

“These changes are often transient, and in the absence of any prior existing condition, periods are likely to return to normal patterns,” said Agbaje Michael (MBBS), Consultant Gynecologist and Obstetrician at Lagoon Hospitals, Lagos to SemicHealth.

Postinor-2 does not harm a developing fetus; hence, does not induce abortion.

There are other side effects of Postinor 2 that are not related to menstruation.

Other side effects of Postinor 2 (P2)

Below are other side effects of Postinor 2

  • Tiredness
  • Nausea and vomiting
  • Dizziness
  • Stomach pain
  • Headache
  • Diarrhea
  • Breast tenderness
  • Skin reactions
  • Increased vaginal bleeding

If you are sexually active, you may want to consider opting in for regular birth control pills for a better protection against unwanted pregnancy.

When to see a doctor for menstrual cycle issues

While Postinor-2 can interfere with the menstrual cycle, it is not often the case. Most of the cases, irregularity or abnormality in menstrual cycle are caused by health conditions that affect reproductive hormones in women.

Such health conditions include polycystic ovarian syndrome (PCOS), pelvic inflammatory diseases, uterine fibroids, and endometriosis. 

Pregnancy, stress, and lifestyle factors can also contribute to abnormal changes in the menstrual cycle.

Consult and speak to a health practitioner if there are changes in your menstrual cycle or when notice abnormalities in the menstrual flow.

Your gynecologist will recommend tests that will determine your situation and next steps for you.