Combined pill or mini pill? It's often the first big decision when you're starting or switching contraception.
Both are over 99% effective when you take them properly. But they work differently, use different hormones, and don't suit everyone the same way.
Here's what actually sets them apart, and how to work out which one's right for you.
What's the difference between the combined pill and the mini pill?
They're both hormonal. That's about where the similarity ends.
The combined pill uses two hormones: oestrogen and progestogen. Together, they stop your ovaries releasing an egg each month. They also thicken the mucus at the entrance to your womb, so sperm can't get through, and thin the womb lining, making it harder for a fertilised egg to implant.1
Taken correctly, it's over 99% effective. That means fewer than 1 in 100 people using it get pregnant in a year.1
The mini pill is simpler in one sense. Just one hormone - progestogen, no oestrogen at all. It thickens cervical mucus too. Some types also stop ovulation, depending on which one you're prescribed.2
It's just as effective with perfect use. But timing matters more here. In typical use, where a pill gets taken late now and then, around 8 in 100 people get pregnant in a year.2
Both pills are over 99% effective with perfect use, but the mini pill needs far more precise daily timing to stay that effective.
Which pills does Pharmica offer?
Pharmica offers nine pill brands, six combined and three mini pill, each with a different dose or timing window.
Pharmica prescribes both types, across several brands. Not every brand suits every person, which is we offer an extensive range of options.
Combined pill
Pharmica's combined pill range includes Rigevidon, Gedarel, Yasmin, Lucette, Marvelon and Mercilon.
Most are taken for 21 days, then a 7 day break. Some regimens differ though. Brands also vary slightly in hormone dose and type, which is often why one suits you better than another.
Mini pill (progestogen-only)
Pharmica's mini pill range includes Noriday, Norgeston and Cerazette. No breaks here, you take one every single day.
Noriday and Norgeston are traditional mini pills with a strict 3 hour window. Miss that window and it may not work as well.
Cerazette contains desogestrel instead, which gives you a 12 hour window. Much more forgiving if your routine changes day to day.3
Who might the mini pill suit better?
The mini pill often gets recommended to people who can't, or don't want to, take oestrogen. That includes people who are breastfeeding, and anyone with risk factors like smoking, being 35 or over, or a history of blood clots.4
Migraine is a good example. If you get migraine with aura, the combined pill isn't considered suitable as it increases the risk of strokes. On the other hand, the mini pill doesn't carry that same risk.4
If your migraines come without aura, the combined pill might still be fine for you. It depends on other risk factors, like smoking or high blood pressure. This is why our prescribers check during your online consultation, to make sure the option you choose is suitable.
What side effects should you expect?
Most people tolerate both pills well. But the pattern of side effects does differ a bit.
Combined pill:
- Breakthrough bleeding - bleeding between periods, common in the first few months while your body adjusts.
- Headaches, nausea and sore breasts - commonly reported. Usually settle within a few months.
- Mood changes - some people notice this. Varies a lot between individuals.
Mini pill:
- Irregular bleeding or spotting - the most common one, especially early on. Usually settles over time.
- Lighter periods, or none at all - some people stop having periods completely. Not harmful.
- Nausea and sore breasts - can happen at first, usually eases.2
There is no good evidence the combined pill causes weight gain, despite being one of the most common worries about it.
If side effects are still bothering after three months, speak to our team or your GP. Switching brand, or type, often helps.
Can you switch between the two?
Yes. Plenty of people do, at some point.
Maybe you've started a new job or you've just had a baby. Maybe a new migraine or blood pressure diagnosis has changed what's suitable for you.
How you switch, and whether you'll need backup contraception like condoms for a few days, depends on where you are in your current pack and which pill you're switching to.
Don't try to figure this out alone. Talk it through with our clinical team so you know exactly when you're covered.
When should you seek medical advice?
Contact a doctor straightaway if you notice any signs of a blood clot while taking the combined pill. Symptoms include:
- Severe pain or swelling in one leg
- Sudden chest pain or difficulty breathing
- Coughing up blood
- A sudden, severe headache unlike your usual ones
- Sudden problems with your speech or eyesight
These are rare. But they need urgent attention.5
If you get migraine with aura for the first time while on the combined pill, stop taking it and speak to your prescriber, even if it happens midway through a pack.4
Frequently asked questions
Can I switch from the combined pill to the mini pill, or the other way round?
Yes, and plenty of people do. How you switch safely depends on where you are in your current pack, so it's best to check with a pharmacist rather than switching on your own.
Is the mini pill less effective than the combined pill?
Not with perfect use, both are over 99% effective. The mini pill is more sensitive to timing though, so missing its strict window (3 or 12 hours, depending on the type) affects it more than being a few hours late with the combined pill.
Can I take the mini pill while breastfeeding?
Yes, the mini pill is generally considered suitable while breastfeeding, unlike the combined pill, which contains oestrogen. Always confirm with a pharmacist or GP based on your own circumstances.
Does the combined pill cause weight gain?
There's no good evidence for this, despite it being a common worry. Weight changes some people notice while on the pill are usually down to other factors, not the medication itself.
What should I do if I forget to take my pill?
This depends on which pill you're taking and how late you are, so it's best to check the patient information leaflet for your specific brand, or speak to a pharmacist, rather than guess.
Can I take the combined pill if I get migraines?
It depends on the type. Migraine with aura means the combined pill isn't considered suitable, due to an increased stroke risk. Migraine without aura may still be compatible, depending on other risk factors like smoking.
References
- NHS inform. Combined pill. nhsinform.scot
- NHS inform. Progestogen-only pill (mini pill). nhsinform.scot
- NHS. How to take the progestogen-only pill. nhs.uk
- The Migraine Trust. Migraine and contraception. migrainetrust.org
- NHS. Side effects and risks of the combined pill. nhs.uk
This article is intended for informational purposes only and does not replace professional medical advice. Always read the patient information leaflet supplied with your medication and speak to a healthcare professional if you have specific concerns.