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Mercilon contraceptive pill available online

Mercilon package
Mercilon package Mercilon Blister Pack Mercilon Blister
  • Around 99% effective
  • Contains desogestrel (150mcg) and ethinyl estradiol (20mcg)
  • Can treat pre-menstrual symptoms

Mercilon is an effective oral contraceptive pill that, when taken daily, has been proven to prevent pregnancy. It is also often prescribed to women who have heavy, painful or irregular periods. Using its active ingredients desogestrel (150mcg) and ethinyl estradiol (20mcg), it has been proven to be almost 99% effective at preventing pregnancy (1 in 100 women) if used correctly.

You can order Mercilon contraceptive pills here online after taking our free online consultation which only takes a few minutes. After it is assessed by one of our registered doctors and approved for your safety, you can complete your order and have it delivered via our free next day delivery service (same day if within London) when ordered before 4pm.

The HealthExpress Service includes:
  • Discreet and private packaging
  • Professional patient support
  • Free consultation and delivery
  • Only MHRA approved medication
  • 5/5
    2508 Satisfied healthexpress patients have written a review on Feefo

  • Delivered by:
    Next working day for London postcodes
    Two working days for Rest of the UK

  • Genuine Medication:

    In stock
    for immediate dispatch

  • 3Getting treatment ineasy steps
    Order Treatment
  • Begin your free consultation by answering a few questions about your condition.
  • After assessing your medical history a registered doctor will offer you the appropriate medications.
  • Once approved, you will be able to order your treatment for free next day delivery.
"The oral contraceptive pill is almost 100% is effective at preventing pregnancy'." Dr Hilary JonesHealthExpress Medical Advisor
Treatment Information
Product Name: Mercilon
Active Ingredient(s): Ethinylestradiol and Desogestrel
Manufacturer: Merck Sharpe & Dohme
Description: Mercilon is a combined contraceptive pill that offers 99% effectiveness at preventing pregnancy
Exemption: Subject to medical prescription
Administration: Oral
Presentation: Tablets
Available Dosage: 150 mcg/ 20 mcg
Application: Offering protection against pregnancy for women over 18
Posology: Take 1 tablet per day for 21 days followed by a 7 day break
Drug class: Combined pill (POM)
Alcohol consumption: No influence
When breastfeeding: Not recommended, ask your doctor for alternatives
When pregnant: Not applicable

What is Mercilon?

Mercilon is a combined oral contraceptive (the pill), which can be taken daily to prevent pregnancy. If taken in the correct manner, Mercilon is proven to be almost 100% effective at preventing pregnancy. Mercilon is a variant of Marvelon that has a lower dosage of synthetic oestrogen, making it a better choice for women who are more sensitive to this hormone.

How do Mercilon pills work?

Mercilon pills work in three ways:

  • Firstly, the two active ingredients found in Mercilon prevent ovulation from occurring, so that the ovaries don't release an egg that could potentially be reached by a sperm.
  • Secondly, to prevent sperm from entering the womb, Mercilon pills increase the viscosity of the mucous in the womb.
  • As a third and final measure, this treatment ensures that the womb lining doesn't thicken up enough for an egg to grow and develop.[1]
Without oral contraceptives With oral contraceptives Released egg Fallopian tube Ovary Endometrium
(uterus lining)
Cervix UTERUS VAGINA Oestrogen and Progesterone prevent eggs from being released from the ovaries. Progesterone causes thinning of the endometrium, which prevents implantation of a fertilized egg. Progesterone thickens the mucus in the cervix, preventing sperm from reaching eggs.

What are the benefits of Mercilon?

If you take it on the first day of your period, Mercilon's contraceptive effects will be immediate. If you take it later, it may take up to seven days to become effective. Like other variants of the pill, it can help to make painful periods less uncomfortable and more regulated. Pre-menstrual symptoms could also become less severe when you take the pill.

Weight gain is one of the main concerns women have when using oral contraceptives. Mercilon pills contain less oestrogen than most traditional combination contraceptives; this significantly reduces your chances of gaining weight while on the pill. Some research has even shown that using this contraceptive can possibly cause a slight reduction in weight with long-term use.

Does the Mercilon combined pill protect me against STIs?

Mercilon tablets will not protect you or your partner against any sexually transmitted diseases/infections. If you've had had unprotected sex and are worried you might have contracted an STI, you should talk to your doctor right away, or visit a walk-in sexual health clinic.

Alternatively, you can take a look at some of the STI treatment options available from HealthExpress.

How do I take the Mercilon pill?

It should be taken without a break for 21 days of your menstrual cycle, followed by seven days when you don't take anything. During these seven days you will still be completely protected. There can be some withdrawal bleeding during this time, but this is a normal part of your treatment. Mercilon tablets should be taken at the same time everyday to help make sure that you do not skip a day. Mercilon can be taken with or without food.[2]

Take on the first day of your period to get protection nearly immediately. You take your Mercilon oral contraceptive pill at as close to the same time every day as you can. This may help you get into a regular routine. Each Mercilon tablet should be swallowed with a drink, with or without food. Do not store above 25°C. Protect from light. Do not use your Mercilon tablets after the expiry date printed on the packet.

What dosages are available for Mercilon?

There is a single standard dosage for Mercilon tablets. Each pill contains 150mcg of the progestogen desogestrel and 20mcg of the oestrogen ethinyl estradiol. This quantity has been formulated to be effective whilst also minimising potential undesirable reactions.

What should I do about a missed Mercilon pill?

If you happen to forget to take your Mercilon pill at the usual time, then make sure to take is as soon as your can. However, if you have missed it by 24 hours or more, it is recommended to follow these instructions as a guide:

  • If you have accidentally missed one Mercilon pill, then take it as soon as you can. Sometimes this might mean taking two pills at the same time. After you've done this, you can then continue taking the rest of the pack as instructed by your doctor or pharmacist.
  • If you miss two or more Mercilon pills, then you will not be protected against falling pregnant. However, take the missed pill as soon as you remember, even if it means taking two at the same time. Due to the way Mercilon works, you're always advised to use condoms or other forms of contraception for the next 7 days.

For more information about what to do if you've missed taking your Mercilon oral contraceptive pill for a significant period, it's always advised to speak to your doctor or someone at a sexual health clinic. You could also speak to a pharmacist if you're unable to see one of the others.

Are there any side effects when taking Mercilon?

Side effects are very rare with this medication, but if they do occur, they are usually mild and will pass as soon as your body has adjusted to the hormones. Possible side effects of the Mercilon pill include:

  • Nausea
  • Breast tenderness
  • Mood changes
  • Weight gain
  • Breakthrough bleeding

Does Mercilon cause weight gain?

Some pills have high oestrogen content, and oestrogen affects body mass. However, since Mercilon contains less of this hormone than some other contraceptives, weight gain is reported less by women using this particular treatment.

Mercilon and breakthrough bleeding

Women using Mercilon pills for the first time may experience side effects such as spotting, breakthrough bleeding or missed periods. You should talk to your GP if any breakthrough bleeding continues, though.

Stopping taking Mercilon

If you're thinking about coming off Mercilon, then it's always recommended that you speak to your doctor. Some things that might have initially pushed you towards starting the Mercilon contraceptive pill, besides pregnancy prevention, might come back. These things, and others, include:

  • Acne or bad skin
  • Reduction in the size and tenderness of the breasts. Many report a lessening of sensation in the nipples also.
  • You may see an increased sex drive when coming off this medication.
  • Mood-swings are sometimes experienced, however lots of women won't experience this at all.
  • Heavier, more painful, or more irregular menstruation

What are the precautions/interactions of Mercilon?

You can buy Mercilon for daily contraception use if you are over 18 years of age. There are certain instances and conditions that may prevent the use of this pill, this includes:

  • If you are pregnant, think you are pregnant or are breastfeeding
  • If you have blood circulation problems
  • If you suffer from unexplained vaginal bleeding
  • If you have heart problems, liver problems or have had a stroke.
  • If you are over the age of 50
  • If you are over 30 and smoke
  • If you have had a blood clot or deep vein thrombosis

Make sure that you mention any other medical issues or medications you are using in your consultation. This will help our doctors ensure that this medication is the most suitable contraceptive pill for you. If it isn't, they will be able to recommend a more appropriate alternative.

For more information about Mercilon and its side effects, precautions and interactions, please refer to the detailed patient information leaflet. This is included with your medication, and is also available for download on this page.

How do I buy the Mercilon pill online safely?

You can buy Mercilon pills online from HealthExpress. All you need to do is complete a quick online consultation form. The answers you provide help our UK registered doctors to make sure that the treatment you have chosen is suitable for you. If your consultation is approved you will be able to purchase your medication safely and securely. A prescription will then be sent to our pharmacy, where your order will be dispatched for express overnight delivery. If you live in London and order before 4pm, you can have your treatment at your door today.

Why choose HealthExpress?

  • Fast, free delivery - order before 4pm and receive your treatment the next day (same day for London postcodes)
  • Free online consultation service with one of our registered GMC doctors
  • Discreet packaging - we don't include any branding or pharmacy logo on our packaging meaning you can get your treatment delivered anywhere
  • UK based and GMC UK registered
  • Only proven prescription medication available and approved by the National Pharmacy Association and CareQuality Commission
  • All inclusive confidential service


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Current reviews for the treatment  Mercilon Rated with 5/5 based on 9 Independent customer reviews on Feefo (See all HealthExpress reviews).
Product review: Works well for me
Service review: Fast service, no hassle
Product review: Great online pharmacy
Service review: Great online pharmacy
Product review: Very good service
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Product review: Efficient
Service review: Quick, hassle free service
Product review: Good quality, efficient, no side effects
Service review: Quick, efficient service, without hassle