Norinyl-1 (Mestranol And Norethisterone)
Complete patient guide for uses, dosage, side effects, and safety information
Quick Facts
What Is Norinyl-1 Used For?
Norinyl-1 is a birth control pill that combines two hormones to prevent pregnancy.
Primary Uses
Mainly used for contraception.
How It Works
It prevents ovulation and alters cervical mucus and uterine lining to prevent pregnancy.
Good to know: Norinyl-1 is not addictive.
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How to Take Norinyl-1
Follow your doctor's instructions carefully when taking Norinyl-1.
Dosage Instructions
Take one tablet daily with water. Start on the first day of your period.
What If You Miss a Dose?
If you miss a white tablet, take it as soon as you remember if it's within 12 hours. If more than 12 hours, skip it and use additional contraception for 7 days.
Important: Never double dose to make up for a missed tablet.
Available Tablet Strengths
Side Effects
Like all medications, this medicine can cause side effects. Most are mild and temporary, but some require medical attention.
Common Side Effects
These side effects occur relatively frequently and usually don’t require emergency care:
- nausea
- headaches
- breast tenderness
- changes in menstrual flow
- mood changes
Seek immediate medical attention if you experience:
- unexplained pains in the head, chest, or legs
- shortness of breath
- blurred vision
- severe headaches or migraines
- jaundice
Important Warnings
There are several important considerations before taking Norinyl-1.
Who Should Not Take Norinyl-1
Do not use if you have a history of blood clots, certain cancers, severe liver disease, or are pregnant.
Medical Conditions to Discuss
Inform your doctor about conditions like high blood pressure, diabetes, migraines, or liver disease.
Pregnancy and Breastfeeding
Not recommended during pregnancy or if you suspect pregnancy. Consult your doctor if breastfeeding.
Drug Interactions
Some medications may affect how Norinyl-1 works.
- anti-viral hepatitis C medicines (ombitasvir, paritaprevir, ritonavir, dasabuvir)
- rifampicin and rifabutin
- certain antibiotics (ampicillin, oxacillin, tetracyclines)
- anti-fungal agents (griseofulvin)
- barbiturates
- medicines for epilepsy (carbamazepine, phenytoin)
- modafinil
- corticosteroids (dexamethasone)
- St. John's wort
Alcohol & Driving
Be cautious with alcohol and driving while on Norinyl-1.
Alcohol
Limit alcohol intake as it may increase side effects.
Driving and Operating Machinery
Norinyl-1 is not expected to impair your ability to drive.
Storage
Store Norinyl-1 in a cool, dry place away from direct sunlight.
Overdose Information
In case of overdose, contact your doctor or the Poisons Information Centre at 13 11 26. Overdose may cause nausea and possible vaginal bleeding.
Frequently Asked Questions
Norinyl-1 is effective from the first day if taken as directed.
You can take Norinyl-1 with or without food.
No, Norinyl-1 is not addictive.
If you stop taking Norinyl-1, you may become pregnant if not using another form of contraception.
Limit alcohol intake as it may increase side effects.
Weight gain can occur but varies by individual.
Elderly patients should discuss their health conditions with their doctor before taking Norinyl-1.
Important Disclaimer
This information is intended for general educational purposes only and should not be considered medical advice. Always consult your healthcare provider or pharmacist before starting, stopping, or changing any medication.
If you think you may have a medical emergency, call your doctor or emergency services immediately.