• Cerazette

Cerazette Pill

Medication features

  • Mini-pill / Progesterone Only Pill
  • Oestrogen free
  • 3-months supply
  • Over 99% effective when taken correctly


Order Cerazette Contraceptive Pill Online

You can request to buy the Cerazette contraceptive pill online from our UK registered online doctor and pharmacy service. Simply complete an online eligibility assessment form, and checkout. Our UK doctors will then review your order to make sure it's safe to issue you with a repeat supply of this medication. 

What is Cerazette?

Cerazette is an oral contraceptive pill used to prevent pregnancy. It contains an active ingredient that is similar to the naturally produced female hormone progesterone, Desogestrel. Pills containing only progesterone are known as progesterone-only pills or mini-pills. Like other contraceptive pills, fertility returns quickly after you stop taking them.

Containing only progesterone makes Cerazette pills more suitable for women who cannot use combined pills which contain oestrogen. This means Cerazette can be more suitable for women who smoke, are over 35, have clotting risks, are breastfeeding, or have a history of migraines.

How does Cerazette work?

Cerazette (75 micrograms of Desogestrel) works by mimicking a natural hormone the body produces to regulate the menstrual cycle.

Desogestrel works mainly by stopping your ovaries from releasing an egg each month (ovulation). In the unlikely event ovulation still occurs, it also increases the thickness of the natural mucus at the neck of the womb making it more difficult for sperm to cross from the vagina into the womb. Lastly, it also thins the womb lining (endometrium), making it more difficult for any successfully fertilised eggs to implant there.

By working in three ways, Cerazette pills are highly effective in preventing unwanted pregnancy.

How effective is Cerazette?

Cerazette and other progestogen-only pills, if taken correctly, are more than 99% effective at preventing pregnancy. There can be a number of situations that can reduce the effectiveness of Cerazette pills. These include severe diarrhoea or vomiting, certain medicines, taking pills late or missing pills. If any of these happen to you, follow the advice for a missed pill in the patient information leaflet.

How to take Cerazette

One pill must be taken every day at the same time each day with no breaks in pills. The pills should be swallowed whole with water. Unlike some other contraceptive pills, when you finish a strip of tablets, start a new strip the next day without taking a break.

On the back of the packet of pills are arrows and the days of the week. Start your pills on the right day of the week and follow the pack until all pills are taken. This makes it easy to identify if you have missed a pill accidentally.

How long does Cerazette take to work?

If you start it on days 1-2 of your period, then you will be protected straight away. If you start to take it after those days of your period, then you will need to use barrier protection for 7 days until you are protected by Cerazette.

Forgetting a pill

If you have forgotten to take the pill at your usual time, you should take it as soon as you remember and the next at your usual time. This may mean taking 2 pills within 24 hours, this is ok. 

If it was less than 12 hours since the missed dose, you will still be protected against pregnancy, and no additional contraceptive measures are required.

If the missed dose was more than 12 hours ago, you may not be protected against pregnancy. If you have had unprotected sex within 48 hours before or after missing a pill by more than 12 hours consult your doctor or pharmacist about using emergency contraception. You may not be protected from pregnancy for up to 2 days after missing a pill by more than 12 hours, you must use a different form of contraception during this time, such as condoms.

Unlike the combined contraceptive pill, protection is regained faster from Cerazette. However, there is less margin for error in forgetting to take your pill. 

Cerazette Pill Summary


Take ONE pill daily at the same time each day.

Type of medicine

Mini-pill (progesterone-only pill)


Prevents ovulation, sperm movement and implantation preventing pregnancy

Available Size

3 months supply

Active Ingredient

Desogestrel 75 micrograms


From £18.95

Side Effects

Can include irregular or no menstruation, headaches, nausea, altered mood.

Cerazette Alternatives

Cerazette mini pill is the same as other mini-pills that contain desogestrel 75 micrograms, such as Cerelle and Zelleta. If 75 micrograms of desogestrel is causing you uncomfortable side effects, you may wish to consider consulting your doctor about other mini-pills or combined pills containing different active ingredients.

If you have trouble remembering your pill and want a non-pill alternative, discuss contraceptive implants, injections and rings with your GP.

Cerazette Side Effects

Like all medicines, Cerazette has the potential to cause side effects in some women although not everyone will experience them. In particular, Cerazette commonly changes menstration or causes no menstruation to occur. This is not a sign that Cerazette is not working, rather a known effect of progesterone medicines. If the bleeding is heavy or prolonged, speak to your GP or pharmacist for advice. 

Other common side effects of Cerazette include headaches, breast pain, altered mood, decreased libido, weight gain, nausea, and acne.

If you notice any side effects, it is important to report them to your doctor or pharmacist. They will advise you on the best course of action. If you experience any severe side effects, seek medical attention.

For a full list of side effects, including those which are infrequent or rare, read the patient information leaflet.


Tyson Wilkman, Clinical Pharmacist


Tyson Wilkman

RoleClinical Pharmacist
Qual.Bachelor of Pharmacy (Honours)
AboutTyson started with Simple Online Pharmacy in 2021. He's responsible for helping review and author accurate site content. He works with our GPs to make sure all aspects of the medicines are covered.


Can the Cerazette pill make you gain weight?

It is a hormonal contraceptive that may affect your appetite as a side effect. Everyone is affected differently. For some people, it causes an increased appetite resulting in weight gain while others will experience no change in appetite or weight.

How to stop bleeding on Cerazette?

Cerazette may cause irregular bleeding during use while for other women it may result in no menstruation at all. Most women who experience bleeding will experience only very light staining. You may need to use tampons or sanitary towels during these times.

If you are experiencing heavy bleeding or prolonged bleeding on the medicine, you must refer to your doctor as your body may not be responding well to Cerazette.

Do I need to use a condom with Cerazette?

You are protected from pregnancy while using the pill. However, condoms are still important to protect against sexually transmitted infections (STIs). If you are not certain of your partner's sexual health status, additional barrier protection.

Can I buy Cerazette pills online?

Cerazette is a prescription-only medicine in the UK. You may request a prescription online with a UK registered doctor and pharmacy service by completing an eligibility assessment reviewed by our UK doctors.


Info Leaflet

Before taking any medication, it is important to read the Patient Information Leaflet.


Warnings & Precautions

Some medicines can affect Cerazette and may make it less effective. Examples include certain anti-epileptic medicines and antibiotics. Ensure your prescriber or pharmacist is aware of all the medicines you take.

Women who take Cerazette may be at a slightly increased risk of breast cancer. While this is only a marginally increased risk, you should check your breasts regularly for any changes or lumps. 

The risk of blood clots in women who take the progestogen-only pill is thought to be lower than the risk of blood clots in women who take pills that contain oestrogens but can still cause a marginally increased risk. Ensure you are aware of the signs of a blood clot while taking the pill.

For a full list of all of the warnings from Cerazettes manufacturer, read the patient information leaflet.

Cerazette and breastfeeding

Cerazette may be used during breastfeeding under a doctor's advice. In trials, it was noticed that small amounts of the drug may pass over into breast milk but it did not affect the growth or development of the child. If you want to breastfeed while taking Cerazette, speak to your doctor first.

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