Mercilon Information Disclaimer

Please note that we do not distribute or sell Mercilon. The content provided on this webpage is intended solely for informational and educational purposes. It should not be construed as medical advice, diagnosis, or treatment recommendation. Always consult a qualified healthcare professional for personalised medical advice and treatment options.

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Mercilon - welzo
Mercilon - welzo


Mercilon - welzo
Mercilon - welzo
Sale price £17.50
In stock.

Mercilon is a combined contraceptive pill containing hormones, oestrogens and progestogens that can be taken to avoid...

Mercilon is a combined contraceptive pill containing hormones, oestrogens and progestogens that can be taken to avoid pregnancy.

Mercilon is a widely-used combined oral contraceptive pill, designed to provide effective protection against pregnancy. This popular contraceptive contains two synthetic hormones, ethinylestradiol (20 micrograms) and desogestrel (150 micrograms), which mimic the naturally occurring female hormones oestrogen and progesterone. By working together, these hormones prevent ovulation, thicken cervical mucus to impede sperm movement, and alter the lining of the uterus, making it difficult for a fertilised egg to implant.

Buy the Mercilon pill online today from Welzo. 


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Mercilon as a Contraception

Contraceptive medications are used to prevent unwanted pregnancy and can also help to alleviate symptoms of menstruation. Mercilon is a form of combined contraception that is taken to prevent unwanted pregnancy for women. It is an oral birth control pill to be taken consecutively for 21 days with a 7-day break or alternatively, depending on your consultation with the GP or doctor. It also helps alleviate symptoms of menstruation.

What is Mercilon and how does it work?

The pill contains synthetic progesterone and oestrogen. These hormones are also produced by the body. Mercilon works by altering the hormonal balance of the body to prevent ovulation by making the lining of the uterus less receptive to egg implantation.

Is Mercilon right for me?

If you are looking for an effective oral contraceptive, Mercilon may be right for you. However, it may not be suitable for you if you have the following:

  • If you are hypersensitive or allergic to any of the ingredients
  • If you have ever had a blood clot or are at risk of a blood clot
  • If you need an operation or if you are off your feet for a long time
  • If you have severe heart, liver or kidney problems
  • If you have (or have ever had) pancreatitis
  • If you have high or low blood pressure
  • If you have ever had a migraine with aura
  • If you are suspected of having breast cancer
  • If you have unexplained bleeding from the vagina
  • If you are taking medication for hepatitis C
  • If you are (or could be) pregnant

Side Effects

All medications can cause potential side effects, below we have listed some potential side effects of Mercilon. However, these do not always occur and are mostly mild in nature. But if you experience any prolonged or worrying side effects of Mercilon, please discontinue the medication immediately and consult your doctor.

Common side effects include:

  • Headache
  • Weight gain
  • Mood swings
  • Tender breasts 
  • Stomach problems

Additional Information

Mercilon is an oral birth control for women taken consecutively for 21 days.

It is 99% effective at preventing unwanted pregnancy if taken correctly.

How to take Mercilon?

Always take Mercilon exactly as prescribed by your doctor or advised by the pharmacist. 

  • Mercilon should be taken every day for 21 days
  • Take your pill at the same time every day
  • Start by taking a pill marked with the correct day of the week
  • Follow the directions of the arrows on the strip and take a pill every day until you have finished all 21
  • Then have 7 pill-free days
  • Start your next strip of Mercilon after the 7 pill-free days, even if you are still bleeding
  • It can be taken with or without food, if necessary with a small amount of water
  • You must not take Mercilon if you are pregnant 
  • It is not advised to take Mercilon while breast-feeding

Warnings and Precautions

Mercilon may not be safe if taken with other medication or recreational drugs. Please inform the prescriber if you are taking any of the listed medications.

DO NOT take Mercilon if you are taking:

  • ciclosporin (medicine used for the treatment of suppression of tissue rejection following transplant surgery)
  • St. John's wort (herbal remedy to treat depression)
  • primidone, phenytoin, barbiturates, carbamazepine, oxcarbazepine, topiramate, felbamate, rufinamide, perampanel to treat epilepsy
  • rifampicin for tuberculosis 
  • Medicines for HIV and Hepatitis C Virus infections (so-called protease inhibitors and non-nucleoside reverse transcriptase inhibitors such as ritonavir, nevirapin, efavirenz) ­ 
  • griseofulvin for fungal infections
  • bosnetan for increase of blood pressure in the lung vasculature ­ 
  • modafinil for sleeping disorders

The above-listed warnings are not exhaustive, please consult a doctor, pharmacist or nurse if you have further questions on the use of this medication or potential interactions with other medicines.


Next Day Delivery Guarantee

All orders placed before 14:00 on weekdays will be delivered the next working day. For the majority of the UK, medication will be dispatched by Royal Mail, Monday to Friday, if ordered before 14:00. Dispatches are sent using Royal Mail's Next-Day Tracked 24-Hour service. We will email you tracking information directly and you should receive your order the day after dispatch.

Our Discreet Packaging Promise

We know that many of our customers turn to us when they need personal medication, preferring to use our online service rather than shopping for the product face to face. That is why our delivery is always discreetly packaged in plain brown boxes or envelopes. You will not have to worry about any content descriptions, and the package will be for your eyes only!

Product reviews

Please note the information below is intended for general knowledge, please read the patient information leaflet and/or the information provided by a healthcare professional for more specific guidance. This information should not substitute medical advice.

Can I get Mercilon on the NHS?

Whether or not you can get Mercilon on the NHS is dependent on your local guidelines and eligibility status. It is best to contact your local GP service if you are unsure of whether you can get Mercilon from the NHS.

Can you get Mercilon over the counter?

No, you can’t get Mercilon over the counter without a prescription or consultation. Mercilon is a regulated medication so all purchases need to have a prescription and/or suitable consultation form completed.

Can I buy Mercilon online even if I have never taken it before?

A prescribing pharmacist will need to review your consultation form before the medication can be dispatched.

Is Mercilon safe?

If you have been prescribed Mercilon then it is at the discretion of the prescriber.

However, all medications can potentially have adverse effects and should be taken exactly as prescribed. If you experience any side effects when taking Mercilon then you should contact a doctor immediately.

Are there any foods that should be avoided when taking Mercilon?

We recommend you read the patient information leaflet for this product thoroughly before taking the treatment. This is essential to understanding any interactions that can occur and to take the medication safely.

Can I buy Mercilon from Boots?

It is generally possible to purchase medication, including Mercilon, from UK pharmacies like Boots. However, I recommend checking the Boots website or contacting Boots directly for the most current and accurate information. Remember to consult with a healthcare professional before starting any new medication.

Can I buy Mercilon from Superdrug?

If you would like to buy Mercilon, you will need to check availability on the Superdrug website.

Can I buy Mercilon from Amazon?

Amazon does not sell medication such as Mercilon, as they are not a pharmacy service provider. Always check with Amazon to see what they sell.

How long does Mercilon take to work?

The time it takes for a Mercilon to work can vary greatly depending on several factors, such as the strength, the individual's age, weight, and overall health, as well as any potential interactions with other medications or substances. Generally, the effects of Mercilon may be noticeable within the time frame outlined by the prescribing pharmacist. It is important to follow the prescribed dosage and instructions provided by your healthcare professional, and to consult them if you have any concerns or questions about the medication's efficacy or possible side effects.

How effective is Mercilon?

The effectiveness of Mercilon can vary significantly depending on various factors, such as the dosage, the condition being treated, the individual's age, weight, and overall health, as well as the presence of any other medications or substances that might interact with it. While some medications may be highly effective for certain individuals and conditions, others might experience a lesser degree of benefit or may require adjustments to the dosage or additional treatments to achieve the desired results.

What are the risks of taking Mercilon?

At Welzo, we are dedicated to providing our customers with accurate and comprehensive information about medications. We believe that understanding the potential risks and side effects associated with a medication is essential for making informed decisions about your health. This guide outlines some general considerations for assessing the risks of medication and includes references to the National Health Service (NHS) for further information.

  1. Read the Patient Information Leaflet (PIL): Every medication comes with a Patient Information Leaflet, which provides essential details about the drug, its uses, and potential side effects. Be sure to read this leaflet carefully before starting any new medication. The Electronic medicines compendium has a list of patient leaflets. you can visit by heading to
  2. Be aware of potential side effects: All medications have the potential to cause side effects, ranging from mild and short-lived symptoms to more serious, long-lasting issues. It's important to understand the possible side effects of a medication and how to manage them. The NHS has a helpful resource on managing medication side effects, while also speaking to a healthcare professional is important in understanding any potential risks of taking Mercilon.
  3. Interactions with other medications: Some medications may interact with others, leading to increased side effects or reduced effectiveness. Make sure to inform your healthcare professional about all the medications and supplements you are currently taking. The NHS offers a useful tool for checking potential drug interactions here.
  4. Contraindications and precautions: Certain medical conditions or factors may make it unsafe for you to take a particular medication. Before starting any new medication, inform your healthcare professional about your medical history and any current health issues. The NHS provides more information about contraindications and precautions here.
  5. Appropriate use and dosage: It's crucial to follow the prescribed dosage and instructions for taking a medication to ensure its effectiveness and minimise the risk of side effects. The NHS has a useful guide on using medicines safely here.
  6. Monitoring and follow-up: Some medications require regular monitoring or follow-up appointments with your healthcare professional to ensure their safety and effectiveness. Be sure to schedule and attend these appointments as needed.

Can I buy Mercilon in the UK?

Yes, you can buy Mercilon in the UK with a valid prescription and or consultation form. Mercilon is available in the UK for purchase from local pharmacies with a valid prescription and or consultation. It is imperative that you ensure that the pharmacy you are buying the products from is licensed and registered with the General Pharmaceutical Council (GPhC).

Are Mercilon users satisfied with the product?

We have a list of reviews from customers taking Mercilon at the bottom of this page. For more information of the reviews of Mercilon head over to for further details.

Can I buy Mercilon from an online pharmacy?

This is dependent on your eligibility for the medication.

How much does Mercilon cost?

The costs of Mercilon are listed at the top of the page. Pricing is provided as a reference as we do not sell Mercilon.

Can Mercilon cause weight gain?

There is no definitive answer, as each person's experience with birth control pills is unique. However, some studies have found that birth control pills can cause weight gain. Mercilon is a low oestrogen pill, which may make it less likely to cause weight gain than other birth control pills.

What is the difference between Mercilon and Yasmin?

Mercilon is a low oestrogen pill while Yasmin is a medium oestrogen pill. Both pills are effective at preventing pregnancy, but Yasmin may have more side effects due to the higher dose of oestrogen. Mercilon is a good choice for women who are looking for a pill with fewer side effects.

Is this medication suited for me?

Please get in touch with a doctor if you are unsure what medication is suitable for you. You can also complete our online consultation form to check your eligibility for the product.

How is the medication delivered?

All orders placed before 14:00 from Monday to Friday will be dispatched that day. The orders are sent using 24 Hour Tracked delivery provided by Royal Mail. Items will usually arrive the very next day after the order has been placed. We also provide tracking for your orders to check the status and location of your parcel. All our medication is packaged in plain confidential padded white or brown envelopes. This ensures that your orders are discreet, and the content of the orders will be for your eyes only.

Does Mercilon affect endometriosis?

There is no definitive answer, as each person's experience with endometriosis is unique. However, some studies have found that birth control pills can help to reduce the symptoms of endometriosis. Mercilon is a low oestrogen pill, which may make it a good choice for women who suffer from endometriosis.

Is Mercilon a low oestrogen pill?

Yes, Mercilon is a low oestrogen pill. It contains 20 micrograms of Ethinylestradiol, which is a lower dose than other birth control pills. This makes it a good choice for women who are looking for a pill with fewer side effects. Mercilon also has a lower risk of blood clots than other birth control pills.

How do I order my medication?

Some products only require an online consultation which approximately takes 1 minute to complete, enabling you to then buy the product. Other products will also require a prescription; in this case, you will need to complete the online consultation, and then one of our partner pharmacy prescribers or doctors will review the online consultation questions and approve the order for delivery if you are eligible to purchase the item.

Can I cancel or return my order?

For non-medicinal products, you are eligible to return the product within 14 days of receipt in the same packaging you received. For medicinal products, you are eligible to cancel the order only until it has been dispatched. From that point forward, you are no longer eligible to return the order.

You have the right to cancel your order for medication up to the point when your medication is dispatched.

Customer Reviews

Based on 22 reviews
Mea Ann Cortez


Kate Keneipp

The prices for medication and healthcare products can be a significant financial burden for people with high medical expenses. It's important to find affordable options.

Fausto Agramonte

Mercilon has been a game-changer for me! It's effective, easy to use and I've experienced no side effects. Highly recommend it for anyone in need of a reliable contraceptive.

Amalia Perez

"I've had some nausea since starting Mercilon but it's gotten better over time. It's been effective for preventing pregnancy."

Alondra Flores

"Mercilon has been a good choice for me. It's easy to take and it hasn't caused any major issues."