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Mercilon is an oral contraceptive for women. The active ingredients: Desogestrel and Ethinylestradiol.


One of the active substances of Mercilon tabs, Desogestrel, has a concentration effect, which is achieved mainly by inhibiting ovulation and also increases the viscosity of cervical mucus. The use of Desogestrel reduces the level of estradiol in the liquid part of the blood to a level that corresponds to the early follicular phase. It does not affect carbohydrate and lipid metabolism and changes in the biological system that ensures the maintenance of normal blood viscosity. After entering the body, it is quickly absorbed into the chemical Etonogestrel, the bioequivalence of which is reached in the blood after about 2 hours. It binds more to blood proteins and less to globulin, which impacts sex hormone binding.

Another active ingredient of Mercilon is Ethinyl Estradiol, which also has a rapid and absolute absorption effect, whose bioequivalence in blood fluid is reached within 2 hours. Complete absorption of the substance during presystemic metabolism is about 60%. This active substance has a strong binding effect with serum albumin and increases the increase in serum concentration of sex hormone binding. The distribution of Ethinylestradiol takes place in the mucosa of the small intestine and in the liver. The level of presence of this substance in the liquid part of the blood decreases during the day. It is excreted from the body in an altered form with urine and bile.

The combination of these two active substances in Mercilon tablets increases the effectiveness of the drug

Pharmacological action

Mercilon has a contraceptive effect based on the interaction of various factors, such as reduction of pain during menstruation, reduction of premenstrual syndromes, protects against pregnancy.

There is also evidence that Mercilon, can reduce the risk of tumors in the female reproductive organs and mammary glands, as well as reduce the development of iron deficiency anemia during heavy menstruation.

Although Mercilon is quite effective in inhibiting ovulation, if abdominal pain occurs, a diagnosis should be made to rule out an ectopic pregnancy. In patients who tend to disturb the formation of melanin pigment in the direction of increasing, it is necessary to avoid direct sunlight and not to use a solarium during the use of the drug.

It should also be considered that the use of any hormonal contraceptives may affect the effectiveness of other drugs. Because of this, the concentration of the liquid part of the blood and tissues may both increase and decrease. When prescribing this medication, the prescriber should discuss the possibility of various complications with each individual patient and determine the likelihood of risk versus benefit of the medication. If the patient decides to take the drug, it should be monitored regularly and in case of deterioration consider its discontinuation.

What does Mercilon using for?

Mercilon should be taken on the first day of menstruation, one tablet a day, at the same time, for 21 days. The sequence of intake is indicated on the package. Mercilon should be taken without crushing, with water if necessary. After 21 days of taking Mercilon, take a one-week break. During this seven-day interval, a menstrual-like reaction occurs, which may be less abundant than usual and longer. Menstruation usually occurs on the 2nd or 3rd day after the 21-day course. After a one-week break, you should restart taking a new pack of Mercilon. You may also start taking Mercilon tablets immediately after a pregnancy termination in the first trimester. If you miss taking the tablets, you can use the following recommendations:

Week 1

Week 2

Week 3

Take the last missed pill immediately after mentioning the omission, in which case 2 pills are taken at the same time, after which the normal intake is resumed according to the scheme, and in addition, you should use protective measures such as a condom. Remember, the more you skip, the greater the risk of pregnancy.

If you miss taking the pill in the second week, you should immediately take two pills at once, and then resume taking the regular regimen. If in the first week the pill was taken strictly according to its scheme, no additional protection is required.

If you break the schedule frequently, there is an increased risk of falls protection against pregnancy, in which case you should use additional barrier protection, such as a contraceptive cap or condom.

Side effects of Mercilon

  • Soreness, increase, appearance of mammary gland secretion
  • Vaginal discharge
  • Change of appetite
  • Sleeplessness or lethargy
  • Increased body temperature
  • Migraine pains
  • dullness
  • Nausea, vomiting
  • Menstrual disorders
  • Change of body weight
  • Swelling
  • Change in blood composition
  • Change of libido
  • Increase in blood viscosity


  • Diabetes mellitus accompanied by vascular complications
  • Tumors and severe liver diseases
  • Hypersensitivity to Medicinal components
  • In acute or chronic inflammation of the pancreas
  • Unspecified vaginal blood discharges
  • Lupus erythematosus
  • Increased blood pressure
  • Cardiac patients who have had heart problems
  • Pregnant or nursing women

Use with caution in cases of obesity, smoking after 35 years of age, unspecified vaginal bleeding, possible pregnancy, cystic lesions, lupus erythematosus, the tendency to pigmentation, ulcers, or colitis.


No significant adverse effects have been observed in overdose of Mercilon. In rare cases, there may be a feeling of loss of reality and, in younger patients, a slight bloody discharge from the vagina. In case of overdose, suitable support measures should be applied to the body in the hospital.

Rules of storage

Store Mercilon in a dry place where it will not be exposed to strong heat, moisture or direct sunlight at 2-25 °C. Limit access of children to the drug.


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Shipping & Returns

 we are a Registered and Licensed Mexican pharmacy we assure you top quality medicines without the worry of your health care provider, employer or any other group finding out what rightfully is a private issue.

Did you know that your private medical file can be used against you to raise your insurance rates or in some cases and countries to lose your job? We take your privacy very seriously and by using these payment methods and the way in which we use them your bank does not directly get charged from our pharmacy. This way your medical needs stay as private as possible.

You will also receive a complete invoice in your email with payment totals and simple payment instructions toward the bottom of the email should you wish to pay at a later convenience.

IMPORTANT: If you need to make some changes in regards an existing order, contact us within 24 hours, otherwise, Medicines Mexico is not liable due to errors on customer’s information or products presentation. 


Shipping Methods.

To ensure the delivery of your order we handle EXPRESS SHIPPING only. Signature is required.
Tracking numbers for all orders will be sent with instructions once shipped.


How long does it take to ship the drugs to my home or office?

  • Express USA time frame: 10-21 business days.   ($24.95 USD Signature required)
  • Express World Wide time frame: 15-30 business days.  ($39.95 USD Signature required)


*Due to unexpected Postal Service changes, one of the shipping methods above could be temporarily disabled.

IMPORTANT: Please ensure your mail program is configured to accept email from www.mexicanrxpharm.com sender, add our email to your non blocked email address so we may send invoices, order status and shipping confirmations. If you do not receive your invoice immediately after this, please check your spam filter and make necessary changes. 

We reply promptly to your enquiries and requests emails, but are too busy to repeatedly resend email that customers do not receive because our replies have been moved to a customers’ Spam, Junk or Bulk email folder.

Online pharmacy Medicines Mexico shipping terms and conditions.
Our team endeavors to process all orders and ship within 72 business hours. All credit card and electronic check payments for your mexicanrxpharm take 24 to 48 hours to be approved by our Payment Processor; upon verification your order will be processed. If there are any problems with your order, we will contact you, so please ensure the email address and phone number you provide is correct, and that any spam filtering software you use accepts email from www.mexicanrxpharm.com

Express Shipping.
We offer Mex Post Express Shipping as an option. This option costs from $24.95 depending on the quantity of medications in your order (up to 9 medications). This option requires a customer signature on delivery. For all other locations Express Shipping is $39.95. All packages are shipped in plain packaging to guarantee your privacy. All packages are sent by parcel express mail from Mexico. Some parcels require a signature upon delivery at our discretion. There are no other handling fees, drug dispensing fees, or Mexican customs charges. If two or more people are ordering their prescription drugs from the same address at the same time, you will be billed for only one shipping charge from our Mexico pharmacy, up to our maximum order quantities limited by customs to 90 day supply. We are able to provide a tracking number on your express shipping parcels. If after 30 business days your order has not arrived, first check with your local postal office to ensure that your package is not being held for pick-up. If you still have problems, please contact us by email and we will attempt to assist you.

Notice Left
If no one is at home at the time of delivery, the status of you order on the Postal System will be updated to “Notice Left” which means USPS attempted to deliver your item and a notice was left because an authorized recipient was not available. You may arrange redelivery by visiting or calling 800-ASK-USPS, or may pick up the item at the Post Office indicated on the notice. If this item is unclaimed after five days then it will be returned to the sender. You can pay for reshipping $24.95 in order to receive a new tracking number. (Reshipping will be issued until the package is received back in our offices).

Note that on Holidays season, the Mexican Postal, USA and other countries will be extra busy; therefore a delay is expected in packages shipped during this season. You will need to consider as well the Mexican holidays. We appreciate your understanding, our customer service will be happy to assist you and available to inform you the latest status on your existing order shipped, you can always contact us at Toll Free number or email address.

Order Cancellation
Due to our policy of same day payment processing, ORDERS CANNOT BE CANCELLED.

Due to government regulations and the possibility of tampering with medications, returns cannot be accepted. In case your package is returned due to no one was available to sign for it. You can pay for reshipping $24.95 in order to receive a new tracking number. (Reshipping will be issued until the package is received back in our offices).

How to find the online pharmacy drug you need.
There are many more medications available in Mexico that are not listed on our website. If you can’t find the Mexican drug or medication you require, please contact us and we may be able to help. Some products are listed only in a single dosage size or medicine type, but may be available in other dosages and forms. Our experienced Mexican pharmacy Pharmacists will do their best to accommodate your requirements. Please always specify the chemical name of the medication (and any applicable brand name) with all inquiries. Please feel free to ask about ANY drug. We will reply promptly to your request.

What you should know about brand and generic drug alternates.
Prescription drugs are a costly medical expense, especially for the elderly, those who are chronically ill and those with no or minimal drug coverage on their Health Insurance. However, each state in America has a law that allows pharmacists to substitute less expensive generic drugs for many brand name products. Depending on your prescription needs, your savings could be very significant. Before you talk with your doctor or pharmacist about switching, there are things you should know about generic drugs.

What is the difference between a generic and brand name drug?
Nothing except for the name, packaging, and the price, a generic drug is called by its chemical name; manufacturers assign their own brand name. The generic products have the same ingredients. Standard practice and most state laws require that a generic drug be generically equivalent to its brand name counterpart. That is, it must have the same active ingredients, strength, and dosage form, be it a pill, liquid, or injection. The generic drug also must be therapeutically equivalent. It must be the same drug chemically and have the same medical effect.

Do all drugs have generic equivalents?
No. Some drugs are protected by patents and are supplied by only one company. However, when the patent expires, other manufacturers can produce its generic version. Currently, about half the drugs on the market are available in generic form.

Will my doctor automatically prescribe generic drugs?
It depends on the physician. You can ask your doctor to write a prescription permitting substitution of a generic drug product when appropriate or to define the chemical name for the prescription. This will ensure you are purchasing the correct Mexico drug. Generic products will be as effective and less costly. Or, you can order only brand name products if you wish. www.mexicanrxpharm.com Mexico pharmacy offers a wide selection of both Brand Name & Generic Mexico medicine. Our Mexican generic drugs are of the highest quality, selected only from the most reputable manufacturers, and are safe to replace brand name medications costing much more.



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