Side Effects of Postinor 2 Tablets (and Benefits!)

Learn about the side effects of Postinor 2 overdose after a week on Menstruation, Pregnancy, and Fertility. This post will teach you all you need to know on Option 2.

Postinor 2, also called Option 2 or the morning after pill by some Nigerians, is a contraceptive meant to be used once in a few weeks. That’s why it’s an “emergency” contraceptive but it’s a sad thing that a lot of women who use it do not take it according to the doctor’s prescription and sometimes abuse it without full knowledge of side effects of Postinor 1 and 2.

We have taken it upon ourselves to educate everyone alike on the benefits and dangers of Option 2 to us.

What Are The Possible Long Term Side Effects Of Postinor 2 Medication?

Postinor 1 and 2 belongs to the family of medications known as progestins. Progestin refers to female sex hormones that are used in female birth control pills and often in combination with the hormone estrogen.

side effects of Postinor 2

This combination has proven to prevent pregnancy to an extent by preventing fertilization of the egg or delaying ovulation. In some cases, it has prevents implantation of the egg by altering the inner lining of the uterus (endometrium).

Like any medications, this drug has side effects a lot of users are not aware of. In simple terms, a “side effect” refers to an unwanted response to a medication when it is taken in normal doses. Depending on the consumer’s body, side effects can be severe, mild, temporary or severe, or permanent.

The side effects listed below are not experienced by everyone who uses this medication. If you fear these effects, or having any of the below experience, you need to discuss the benefits and risks of this birth control pill with your doctor.

READ ALSO: 6 Disadvantages of Zobo drink

Side Effects of Postinor 2 After a week

The following side effects of Postinor 2 have been reported by at least 2% of Naija people who used these medications. A lot of these side effects are “not serious” and can be managed, and some may go away on their own over time.

You should contact your doctor if any of these side effects bother you or are getting sever. Your pharmacist may be able to advise you on managing each side effect.

Side Effects of Postinor 2 on Menstration

Effects of Option 2 include heavier, altered or irregular menstrual bleeding.

When used too often, it can delay your period form up to 3 months. So completely read this guide today before you decide to use it. Other more vigorous side effects include bleeding, infertility, spotting, and excessive weight gain.

Side Effects of Postinor 2 while breastfeeding

Little amounts of progestin pass into the breast milk of women taking progestin-only pills. No adverse effects have been found with taking this medication while breast-feeding, either in the quality and quantity of milk or in the growth and development of the infant.

Postinor 2 Side Effects on Fertility

If used for a long period of time, this drug prevents the male sperm from fertilizing the egg. Therefore preventing unwanted pregnancy.

Other long term side effects of Postinor 2 on womb may be: weakening the baby holder’s(womb) wall

Want to learn about other side effects of Postinor 2 after a week? Continue reading…..

  • Pains in your abdomen
  • Your breasts become tender
  • You’ll start experiencing diarrhoea
  • Occasional feelings of dizziness
  • Become easily fatigued
  • Constant or re-occurring headache
  • Frequent migraine
  • Consistent nausea
  • Vomiting or Puking

Although a good number of the responses listed above do not happen very often, they could lead to some serious complications or problems if you do not seek medical attention.

How long does the side effects of Postinor 2 last?

Now, if any of the below long term effects occur, check in with your doctor ASAP:

  • Severe abdominal pain before or Cramping before your next normal period
  • Skin Rash
  • Itching
  • Very heavy vaginal bleeding

Some people may experience other effects of the drug other than the ones mentioned above. Check with your doctor if you notice any symptom that worries you while on this medication.

Are there any other precautions or warnings for this medication?

Before you and your partner decide to walk down this path, be sure to inform your doctor of any medical allergies or conditions you might have, whether you are pregnant or breast-feeding, any medications you are taking, and any other significant facts about your health. These factors may affect how you should use this medication.

  • Decreased effectiveness: This medication is less effective for women who weigh more than 75kg (i.e. 165 pounds). It is said to be more effective for women who weigh more than 80 kg (176 pounds).

If you weigh more than 165 pounds, contact your pharmacist or doctor for advice about emergency contraception.

  • Diabetes: It has been reported that few women have experienced loss of blood glucose control when taking progestin-only pills, women with diabetes should monitor their blood glucose levels carefully after taking this medication.


  • Liver problems: Whether or not this drug is safe for people with liver disease has not been made known yet. However, if you do have liver disease, discuss with your doctor whether any special monitoring is needed.

 side effects of Postinor 2

  • Migraine: After taking a dose of Postinor 1 or 2, you may experience migraine or a severe headache.


  • Sexually transmitted infections: This medication does not protect against sexually transmitted infections and diseases, including HIV or AIDS. For protection against these infections, latex condoms should be used.


  • Pregnancy: This medication should be avoided during pregnancy. It will not terminate the foetus if it has been established.


  • Breast-feeding:Little amounts of progestin pass into the breast milk of women taking progestin-only pills. No adverse effects have been found with taking this medication while breast-feeding, either in the quality and quantity of milk or in the growth and development of the infant.

But to stay safest, do not use the medications during these periods.

How does this medication work? What will it do for me?

Well, one thing is certain: it does not protect you against HIV infection (AIDS) or other sexually transmitted infections.

Your pharmacist or doctor may have recommended these medications for conditions different from the ones discussed above. So, if you have no idea why you are taking these pills, speak to your doctor.

Do not give this medication to a friend or a family member who has the same symptoms as you do. It can be really dangerous for them if their doctor has not prescribed this.

What form(s) does this medication come in?

Each white-to-off-white, circular, flat, bevel-edged, uncoated tablet debossed with “L840” on one side contains 750 mg of levonorgestrel. Nonmedicinal ingredients: potatoe starch, talc, magnesium stearate, corn starch, lactose monohydrate, and silica colloidal anhydrous.

How To Take Postinor 2 medication?

The two tablet contained in the kit should be swallowed as soon as possible within 72 hours of unprotected intercourse.

Note: The medication is most effective if taken within 24 hours of unprotected sexual intercourse.

Because this medication is often associated with nausea, your professional doctor may recommend you medication(s) to prevent nausea at the same time as taking these pills. If you vomit within 2 hours of taking the tablets, you should contact your health care provider immediately.

This medication can be taken during menstrual cycle and can be used with or without food. Taking it with food may help reduce the nausea.

Generally, women often have their expected menstrual cycle within 7 days of their normal time after this medication.

Now, if you do not have your menstrual period within 7 days of when it is expected, you should do a pregnancy test.

Factors like body, weight, other medications or medical conditions can affect the doe you might require. If your doctor has recommended a dosage different from the one listed here, contact him first before changing the way you take your meds.

It is of high importance that you take this medication in the same manner your doctor recommended.

Do not dispose these medications in household garbage, or down the toilet or sink (or any other waste water). Contact your pharmacist on how to properly dispose of medications that have expired or are no longer needed.

Want to know more side effects of Postinor 2 tablets?

Read on….

Here are some reasons why you should not take these medications:

Do not take this medication if you:

  • Maybe or are really pregnant
  • have undiagnosed abnormal vaginal bleeding
  • are allergic to ingredients of this medication or levonorgestrel

What Other Drugs Could Interact With This Medication?

side effects of Postinor 2

Levonorgestrel may react or interact with any of the following:

  • acitretin
  • adapalene
  • antibiotics (ampicillin, tetracycline, clarithromycin, cotrimoxazole)
  • exenatide
  • fosaprepitant
  • fosphenytoin
  • griseofulvin
  • heparin
  • apixaban
  • aprepitant
  • atazanavir
  • barbiturates (e.g., phentobarbital, penobarbital)
  • dabigatran
  • dabrafenib
  • darunavir
  • deferasirox
  • dexamethasone
  • efavirenz
  • boceprevir
  • bosentan
  • carbamazepine
  • cholestyramine
  • colestipol
  • clobazam
  • cobicistat
  • cyclosporine
  • isotretinoin
  • lamotrigine
  • low-molecular-weight heparins (e.g., dalteparin, enoxaparin, tinzaparin)
  • mifepristone
  • topiramate
  • tranexamic acid
  • tretinoin
  • ulipristal
  • voriconazole
  • mycophenolate
  • nevirapine
  • oxcarbazepine
  • perampanel
  • phenytoin
  • primidone
  • prucalopride
  • rifampin
  • rifabutin
  • rivaroxaban
  • St. John’s wort
  • selegiline
  • thalidomide
  • tocilizumab
  • warfarin

The listed side effects of Postinor 2 while breastfeeding has proven to be dangerous too.

Because only two tablets are consumed per usage, the effects of these medications on the activity of levonorgestrel are likely to be minimal. If you are taking any of these medications, talk to your pharmacist or doctor.

Depending on your specific circumstances, your doctor may want you to:

  • Change from one medication(s) to another
  • Leave everything as it is
  • Stop taking one of the medications
  • Change how you are taking one or two medications

Lastly, an interaction between this drug and other drugs should not mean that you must quit taking one of them. Talk to your doctor, seek his professional advice and suggest him ways by which you manage or can manage the interactions.

side effects of Postinor 2

Medications other than those listed above may interact with this medication. Be open to your doctor about your over-the-counter (non-prescription) encounters, all prescription, and any herbal meds you might be taking. Do not forget to mention any supplement, caffeine, alcohol, cigarettes, decongestants, or street drugs that can bring about all dangerous side effects of Postinor 2 tablets.


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