Norifam: What You Need to Know About This Monthly Injectable Contraceptive

Last updated: August 2026

Medical disclaimer: This article is for general information only and isn’t a substitute for medical advice. Talk to your doctor or a licensed family planning provider before starting or stopping any contraceptive method.

Quick answer: Norifam is a combined injectable contraceptive containing norethisterone enanthate and estradiol valerate, given as one intramuscular injection every month. It works similarly to combined birth control pills but is administered as a shot instead, and it requires a proper medical consultation before use since it isn’t right for everyone.

If you’ve searched for Norifam, you’re probably trying to figure out how it works, what to expect, and whether it’s a good fit for you. Here’s an accurate, sourced rundown and a reminder that a licensed doctor or family planning provider is the right person to make this decision with you, not a blog post.

What is Norifam and how does it work?

Direct answer: Norifam is a combined injectable contraceptive (CIC), meaning it contains both an estrogen (estradiol valerate) and a progestogen (norethisterone enanthate), similar to combined birth control pills but delivered as a monthly injection instead of a daily pill.

This puts Norifam in a different category from progestin-only injectables like Depo-Provera. Because it contains estrogen in addition to progestogen, it tends to allow for more regular monthly bleeding, closer to a natural cycle, compared to progestin-only methods, which more commonly cause irregular spotting or no periods at all.

How is Norifam administered?

Direct answer: Norifam is given as one intramuscular injection roughly every 30 days, with your doctor or provider determining the exact schedule and timing of your first dose.

According to the Philippine Family Planning Handbook, combined injectable contraceptives are given monthly and require the same kind of informed counseling as other hormonal methods. Your provider will walk you through the correct timing for your first shot and follow-up doses; this isn’t something to self-schedule based on general advice online.

Is Norifam effective?

Direct answer: Like other combined hormonal contraceptives, Norifam is highly effective when used exactly on schedule, but effectiveness drops with missed or delayed doses, so consistency matters.

Clinical research on this specific formulation (norethisterone enanthate 50 mg plus estradiol valerate 5 mg) has been studied over multi-year trials and found it to be an effective monthly contraceptive option, comparable to other established injectable methods. That said, exact effectiveness rates can vary by individual and by how consistently doses are taken on schedule, which is exactly the kind of detail your doctor can walk you through based on your own health history.

What are the side effects of Norifam?

Direct answer: Possible side effects can include headaches, nausea, breast tenderness, weight changes, mood changes, and changes in menstrual bleeding patterns, similar to what’s seen with combined oral contraceptives.

Any hormonal contraceptive can affect people differently, and side effects that are mild and manageable for one person may not be for another. If you experience severe headaches, chest pain, leg swelling or pain, signs of jaundice, or a significant change in vision while using Norifam, contact your doctor right away, these can be signs of a more serious reaction that needs medical attention.

Who should not use Norifam?

Direct answer: Because Norifam contains estrogen, it generally follows the same precautions as combined birth control pills, meaning it isn’t recommended for women who smoke and are over 35, have uncontrolled high blood pressure, have a history of blood clots, stroke, or heart attack, have certain types of migraines, are fully breastfeeding an infant under 6 months old, or have a history of certain cancers.

This list isn’t exhaustive, and only a doctor reviewing your personal and family medical history can properly determine whether Norifam or any combined hormonal method is safe for you. If you have any of these risk factors, your provider can help you find a non-estrogen option that’s a better fit.

How soon does fertility return after stopping Norifam?

Direct answer: Because Norifam is a monthly method rather than a longer-acting one like the 3-month progestin-only injection, most people can expect their natural cycle and fertility to return relatively quickly after their last dose, though the exact timeline varies from person to person.

If you’re planning a pregnancy soon or are unsure how long to wait after stopping, this is worth discussing directly with your OB-GYN or family planning provider, who can give you guidance based on your specific cycle history rather than a general estimate. Once you do start trying to conceive, it also helps to know what early pregnancy symptoms actually look like so you’re not left guessing in those first few weeks.

Frequently Asked Questions

What is Norifam used for? Norifam is a monthly combined injectable contraceptive used to prevent pregnancy. It contains both estrogen and progestogen, given as a single injection roughly every 30 days.

Is Norifam the same as Depo-Provera? No. Depo-Provera is a progestin-only injectable given every 3 months, while Norifam is a combined (estrogen plus progestogen) injectable given monthly. They work differently and have different side effect profiles, particularly around menstrual bleeding patterns.

Does Norifam cause weight gain or affect appearance? Weight changes are a possible side effect of many hormonal contraceptives, including Norifam, and effects vary by individual. Claims about specific cosmetic effects like skin tone or breast size are not supported by clinical evidence and shouldn’t be a basis for choosing a contraceptive method. Talk to your doctor about what to realistically expect.

Do I need a check-up before starting Norifam? Yes. A proper medical and gynecological evaluation is an important step before starting any hormonal contraceptive, including Norifam, so your provider can confirm it’s a safe option for your specific health history.

The bottom line

Norifam is a monthly combined injectable contraceptive that works similarly to combined birth control pills. It can be an effective option for the right person, but because it contains estrogen, it carries the same precautions as combined oral contraceptives and isn’t appropriate for everyone. The right way to decide if it’s right for you is to have a proper consultation with a doctor or licensed family planning provider, not to rely on general information from the internet, as this article does.

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Sources cited in this article

• Philippine Family Planning Handbook, 2023 Edition (WHO/Philippine DOH)
• Philippine Clinical Standards Manual on Family Planning (WHO)
• Multicentred phase III clinical trial of norethisterone enanthate 50mg plus estradiol valerate 5mg as a monthly injectable contraceptive (PubMed)
• WHO Essential Medicines List: combined injectable contraceptives