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Necon 10/11 Review

Necon 1 / 35 is a combination birth control pill that contains 2 hormones: ethinyl estradiol and norethisterone (also known as norethindrone). The drug is used to prevent unwanted pregnancy.


Indications for use

Necon 10/11 is usually used to prevent unwanted pregnancy but it also has other indications for use:

  • Stimulation or delay of menstruation;
  • Functional disorders of the menstrual period;
  • Hypoplasia of the uterus;
  • Infertility due to functional disorders;
  • Dysmenorrhea.

Mechanism of action

Necon 10/11 works by preventing the ovulation during your menstrual cycle. It also makes vaginal fluid thicker to help prevent sperm from fertilization and changes the lining of the womb to prevent attachment of a fertilized egg.

Besides preventing pregnancy, the drug may make your periods more regular, less abundant and painful, treat acne and also decrease your risk of ovarian cysts.

Dosage and mode of application

The package may contain 21 or 28 pills. With 21-day pills, you take one pill every day for 21 days in a row. During week 4 you take no pills and have your period. The 28-day packs contain 21 active pills with 7 inactive pills with no hormones. Take 21 active pills for 21 days in a row, and 7 inactive pills to keep you in the habit of taking the contraceptive every day. In this case, you will also get your period during week 4.

Side effects

In some cases, these tablets can cause the following side effects:

  • headache;
  • nausea;
  • diarrhea;
  • rash (allergy);
  • depression;
  • tenderness of the mammary glands.

Long-term use of the tablets may cause brown spots on the skin and reduce the tolerability to contact lenses.


Do not use Necon 10/11 if you have any of the following diseases/conditions:

  • hypersensitivity;
  • pregnancy;
  • hormone-dependent tumors of the mammary glands and uterus;
  • severe dysfunction and tumors of the liver;
  • thromboembolic diseases (including a history);
  • thrombosis of arteries and veins;
  • diabetes mellitus with vascular complications;
  • vaginal bleeding of unknown etiology.


Necon 10/11 may interact with narcotics, anticonvulsants, analgesics, tranquilizers, and some antibiotics. All these drugs reduce its contraceptive effect.

Necon 10/11 may also reduce the effectiveness of oral hypoglycemic medications and insulin.

Pregnancy and breastfeeding

Do not use Necon 10/11 during pregnancy as it makes no sense. However, the use of the drug at the early stages of pregnancy does not increase the risk of various fetal defects

If you get pregnant when on the pills, stop taking them and consult a doctor.

This contraceptive inhibits lactation. A small amount of the active ingredients can penetrate into breast milk. Do not use these pills during breastfeeding.

What if I miss a pill?

Missing a hormone-containing pill of Necon 10/11 may cause menstrual bleeding. Follow the below instructions:

  • If you missed 1 active pill, take 2 pills the next day;
  • If you missed 2 active tablets in a row, take 2 pills per day for the next 2 days and then return to your usual schedule (1 pill daily);
  • If you missed a hormone-free (reminder) pill, just throw it away and continue taking the pills according to your usual schedule.


Use the drug with if you suffer from diabetes mellitus, arterial hypertension, varicose veins, phlebitis, otosclerosis, multiple sclerosis, epilepsy, liver diseases, endometriosis, Sydenham disease. Stop taking the pills if you get pregnant, or if you notice migraine-like headaches, acute visual impairment, hearing impairment, acute thrombosis, stagnation of bile or jaundice, high blood pressure, or if you are planning surgeries or prolonged bed rest.

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