Dimetrio is a preparation for the treatment of endometriosis (painful symptoms caused by an abnormal location of uterine lining tissue). Dimetrio contains a hormone, the progestogen dienogest.
If any of these disorders appear for the first time while taking dienogest, stop taking it immediately and consult your doctor.
Consult your doctor before starting to take dienogest.
You should not take oral contraceptives in any form (in pill, patch, intrauterine system) while taking dienogest.
Dienogest is NOT a contraceptive. If you want to prevent pregnancy, you should use condoms or other non-hormonal contraceptive precautions.
In some cases, you should be particularly careful while taking dienogest, and it may be necessary for your doctor to examine you periodically. Inform your doctor if you are affected by any of the following conditions:
While taking dienogest, the likelihood of becoming pregnant decreases because dienogest can affect ovulation.
If you become pregnant while taking dienogest, you have a slightly higher riskof having an ectopic pregnancy (the embryo develops outside the uterus). Inform your doctor before starting to take dienogest if you have had an ectopic pregnancy or if you have a malfunction of the Fallopian tubes.
Uterine bleeding may worsen with the use of dienogest, for example, in women who have a condition in which the uterine lining (endometrium) grows into the muscular layer of the uterus, known as adenomyosis or uterine fibroids (leiomyomas). If the bleeding is intense and prolonged, it can lead to a decrease in the number of red blood cells (anemia), which in some cases can be severe. In case of anemia, you should consult your doctor about whether you should stop taking dienogest.
Most women treated with dienogest experience changes in menstrual bleeding pattern (see section 4, Possible side effects).
Some studies indicate that there may be a slight, although not statistically significant, increase in the risk of blood clots in the legs (venous thromboembolism)associated with the use of preparations containing progestogens like dienogest. Very rarely, blood clots can cause permanent and severe disabilities or even be fatal.
The risk of blood clots in the veinsincreases:
There is little evidence of a relationship between progestogen preparations like dienogest and an increased risk of having a blood clot, for example, in the blood vessels of the heart (heart attack) or brain (stroke). In women with hypertension, these preparations may slightly increase the risk of stroke.
The risk of having a blood clot in the arteriesincreases:
Consult your doctor before starting to take dienogest.
Based on currently available data, it is not clear whether dienogest increases or does not increase the risk of breast cancer. It has been observed that breast cancer is slightly more common in women taking hormones compared to those not taking them, but it is unknown whether this is caused by the treatment. For example, tumors may be detected more frequently and earlier in women taking hormones because they are examined more frequently by the doctor. The occurrence of breast tumors decreases after stopping hormonal treatment. It is essential that you regularly check your breastsand consult your doctor if you feel any lump.
In rare cases, in women taking hormones, benign liver tumors and, in more exceptional cases, malignant liver tumors have been reported. Contact your doctor if you experience unusually severe stomach pain.
Changes in Bone Mineral Density (BMD)
The use of dienogest may affect bone strength in adolescents (12 to less than 18 years). If you are under 18 years old, your doctor will carefully weigh the benefits and risks of using dienogest for you as a patient on an individual basis, considering possible risk factors for bone loss (osteoporosis).
If you use dienogest, it will be helpful for your bones to have an adequate intake of calcium and vitamin D, both through food and dietary supplements.
If you are at higher risk of suffering from osteoporosis (weakening of bones due to loss of bone minerals), your doctor will carefully weigh the risks and benefits of your treatment with dienogest because dienogest causes moderate suppression of estrogen production (another type of female hormone) by your body.
Dienogest is not indicated in girls before menarche (first menstruation).
Tell your doctor or pharmacist if you are taking, have recently taken, or might take any other medicines, including herbal preparations that you are taking. Also, inform any other doctor or dentist who prescribes you another medicine (or pharmacist) that you are taking dienogest.
Some medicines may influence dienogest blood levels and make it less effective or cause unwanted effects.
These include:
Consult your doctor or pharmacist before using any medicine.
During treatment with dienogest, you should avoid drinking grapefruit juice, as it can increase dienogest levels in your blood. This can increase the risk of experiencing side effects.
If you need a blood test, inform your doctor or laboratory personnel that you are taking dienogest, as dienogest can affect the results of some tests.
If you are pregnant or breastfeeding, think you may be pregnant, or plan to become pregnant, consult your doctor before using this medication.
Do not take dienogest if you are pregnant or breastfeeding.
No effect on the ability to drive and use machines has been observed in users of dienogest.
If your doctor has told you that you have an intolerance to certain sugars, consult with them before taking this medication.
This medication contains less than 1mmol of sodium (23 mg) per tablet; this is essentially “sodium-free”.
Follow the instructions for administration of this medication exactly as indicated by your doctor. In case of doubt, consult your doctor or pharmacist again. The usual dose for adults is one tablet per day.
The following statements apply to dienogest unless your doctor prescribes otherwise. Follow these instructions; otherwise, you will not benefit fully from treatment with dienogest.
You can start treatment with dienogest on any day of your natural cycle.
Adults: take one tablet every day, preferably at the same time, with some liquid if necessary. When you finish one pack, the next one should be started without interruption. Continue taking the tablets even on days of menstrual bleeding.
There is no experience with treatment with dienogest for more than 15 months in patients with endometriosis.
No serious harmful effects have been reported from taking too many dienogest tablets at once. Consult your doctor or pharmacist immediately or the Toxicology Information Service, phone 91-562.04.20. Do not forget to take the medication package with you.
Dienogest will be less effective if you forget a tablet. If you forget one or more tablets, take a single tablet as soon as you remember; then, continue the next day, taking the tablet at the usual time.
If you vomit within 3-4 hours after taking a dienogest tablet or have severe diarrhea, there is a risk that the active substance of the tablet may not be fully absorbed by your body. This situation is similar to when you forget a tablet. After vomiting or diarrhea within 3-4 hours after taking dienogest, you should take another tablet as soon as possible.
Do not take a double dose to make up for forgotten doses.
If you stop taking dienogest, your original symptoms of endometriosis may return.
If you have any other questions about the use of this medication, ask your doctor or pharmacist.
Like all medicines, this medication can cause side effects, although not everyone gets them. The effects are more frequent in the first few months after starting to take dienogest and usually disappear with continued use. You may also experience changes in your bleeding pattern, for example, you may have spotting, irregular bleeding, or your menstruation may stop completely.
Additional side effects in adolescents (12 to less than 18 years):
loss of bone density.
If you experience any side effects, consult your doctor, pharmacist, or nurse, even if they are side effects not listed in this package leaflet. You can also report them directly through the Spanish Pharmacovigilance System for Human Use Medicines: https://www.notificaram.es. By reporting side effects, you can contribute to providing more information on the safety of this medication.
This medication does not require special storage conditions.
Keep this medication out of sight and reach of children.
Do not use this medication after the expiration date shown on the packaging after "CAD:". The expiration date is the last day of the indicated month.
Medicines should not be disposed of via wastewater or household waste. Deposit the packaging and unused medicines at the SIGRE Point of the pharmacy. In case of doubt, ask your pharmacist how to dispose of the packaging and unused medicines. This will help protect the environment.
The active ingredient is dienogest. Each tablet contains 2 mg of dienogest.
The other components are lactose monohydrate, corn starch, povidone, sodium glycolate starch (starch derived from potato), magnesium stearate, hypromellose (E464), hydroxypropylcellulose (E463), talc (E553b), hydrogenated cottonseed oil, titanium dioxide (E171).
The Dimetrio film-coated tablets are white, round, biconvex, with a "2" in relief on one face and approximate diameter and thickness of 6.1 mm and 2.7 mm, respectively.
They are presented in a blister pack containing 14 film-coated tablets.
The boxes contain blister packs with 28, 56, 84, or 168 film-coated tablets.
Laboratorios Cinfa, S.A.
Carretera Olaz-Chipi, 10. Polígono Industrial Areta
31620 Huarte (Navarra) – Spain
Haupt Pharma Münster GmbH
Schleebrüggenkamp 15
48159 Münster
Germany
Laboratorios Cinfa, S.A.
Carretera Olaz-Chipi, 10. Polígono Industrial Areta
31620 Huarte (Navarra) – Spain
Detailed information on this medication is available on the website of the Spanish Agency for Medicines and Health Products (AEMPS) http://www.aemps.gob.es/
You can access detailed and updated information on this medication by scanning the QR code included in the leaflet and packaging with your mobile phone (smartphone). You can also access this information at the following internet address: https://cima.aemps.es/cima/dochtml/p/84015/P_84015.html
QR code to: https://cima.aemps.es/cima/dochtml/p/84015/P_84015.html
The average price of DIMETRIO 2 mg FILM-COATED TABLETS in October, 2025 is around 10.58 EUR. Prices may vary depending on the region, pharmacy, and whether a prescription is required. Always check with a local pharmacy or online source for the most accurate information.