Precautionary measures
If any of the conditions of the risk factors listed below are currently available, the potential risk and expected benefit of using a combined oral contraceptive in each individual case should be weighed carefully and discussed with the woman before she decides to start taking the drug. In case of weighting, strengthening or the first manifestation of any of these conditions or risk factors, a woman should consult with her doctor who can decide whether to cancel the combined oral contraceptive.
Disorders of the circulatory system
The frequency of venous thromboembolism (VTE) when using a combined oral low-dose estrogen oral contraceptive (<50 μg ethinyl estradiol, such as Dailla®) is approximately 20 to 40 cases per 100,000 women per year, which is slightly higher than for women who do not using hormonal contraceptives (5 to 10 cases per 100,000 women), but lower than women during pregnancy (60 cases per 100,000 pregnancies).
An additional risk of VTE is noted during the first year of combined oral contraceptive use. VTE leads to a lethal outcome in 1-2% of cases.
There was also a correlation between the use of combined oral contraceptives and an increased risk of arterial thromboembolism. Very rare cases of thrombosis of other blood vessels, for example, liver, mesenteric, renal, cerebral and retinal arteries, as well as arteries and veins, in patients taking oral hormonal contraceptives have been described. The causal relationship between the occurrence of these side effects and the use of combined oral contraceptives has not been proven.
Symptoms of venous or arterial thrombosis / thromboembolism or cerebrovascular disease may include:
- unusual unilateral pain and / or swelling of the limb
- sudden severe pain in the chest with or without irradiation in the left arm;
- sudden shortness of breath;
- a sudden attack of coughing;
- Any unusual, strong, prolonged headache;
- sudden partial or complete loss of vision;
- Diplomacy;
- Inarticulate speech or aphasia;
- dizziness;
- loss of consciousness with or without convulsive seizure;
- weakness or very significant loss of sensitivity, suddenly
appeared in one half or in one part of the body;
- motor disorders;
- syndrome of "acute abdomen".
The risk of complications associated with VTE when taking a combined oral contraceptive increases:
- with age;
- in the presence of a family history (venous or arterial thromboembolism in close relatives or parents at a relatively young age); if hereditary predisposition is assumed, a woman needs specialist advice before prescribing a combined oral contraceptive;
- after prolonged immobilization, serious surgical intervention, any foot surgery or extensive trauma.In these situations, it is recommended that you stop taking the drug (in the case of a scheduled operation, at least four weeks before it) and do not resume taking it within two weeks of immobilization. Additionally, antiplatelet therapy may be prescribed if oral hormonal contraceptive use has not been discontinued at the recommended time;
- with obesity (body mass index more than 30 kg / m2);
The risk of arterial thrombosis and thromboembolism when taking a combined oral contraceptive increases:
- with age;
- for smokers (women over the age of 35 are strictly not recommended to smoke if they want to use combined oral contraceptives);
- with dyslipoproteinemia;
- with arterial hypertension;
- with migraine;
- with diseases of the heart valves;
- with atrial fibrillation.
The presence of one of the major risk factors or multiple risk factors for arterial or venous disease, respectively, may be a contraindication. Women who use combined oral contraceptives should immediately consult a doctor if symptoms of possible thrombosis occur.In cases of suspected thrombosis or confirmed thrombosis, the use of a combined oral contraceptive should be discontinued. It is necessary to choose an adequate method of contraception due to teratogenicity of anticoagulant therapy (coumarins). You should consider the increased risk of thromboembolism in the postpartum period.
Other diseases that are associated with severe vascular pathology include: diabetes mellitus, systemic lupus erythematosus, haemolytic uremic syndrome, chronic inflammatory bowel disease (Crohn's disease or ulcerative colitis) and sickle cell anemia.
An increase in the frequency and severity of migraine attacks during the use of combined oral contraceptives (which may precede cerebrovascular disorders) may be the basis for the immediate discontinuation of these medications.
Tumors
The most significant risk factor for developing cervical cancer is infection with the human papillomavirus. Some epidemiological studies have reported an increased risk of developing cervical cancer with long-term use of combined oral contraceptives,but there remain conflicting opinions as to the extent to which these findings relate to confounding factors, such as the study of the presence of cervical cancer and the use of barrier methods of contraception.
It is believed that there is a slightly increased relative risk (RR = 1.24) of having breast cancer diagnosed in women who are at the time of the study used combined oral contraceptives. The excess risk gradually decreases in treatment 10 years after discontinuation of combined oral contraceptives. Because breast cancer is rare in women younger than 40, the increase in breast cancer diagnosed in women who have taken or taken combined oral contraceptives in recent years is small relative to the overall risk of developing breast cancer. These studies do not support the causal relationship between the use of combined oral contraceptives and breast cancer. The observed increase in risk may be a consequence of an earlier diagnosis of breast cancer in women,using combined oral contraceptives, the biological effect of combined oral contraceptives, or a combination of both. Cancerous breast tumors in women who have ever taken combined oral contraceptives were clinically less pronounced than in women who never took them.
In rare cases, against the background of the use of combined oral contraceptives, the development of benign liver tumors, and even more rare - malignant. In some cases, these tumors caused life-threatening abdominal bleeding. When differential diagnosis of liver tumors in women taking combined oral contraceptives, you must consider the occurrence of severe pain in the upper abdominal areas, an increase in the liver or symptoms of intra-abdominal bleeding.
Other states
The progesterone component in the preparation of Simicia® is an aldosterone antagonist having the property of retaining potassium. In most cases, there is no increase in potassium concentration. However, in some patients with mild or moderate renal failure and concomitantthe appointment of potassium-arresting drugs with the intake of drospirenone potassium concentration in the serum is insignificant, but increased. Thus, it is recommended to check the serum potassium concentration in the first cycle of the drug in patients with renal insufficiency and potassium concentration before treatment at the upper limit of the norm, and also with the simultaneous use of drugs that retard potassium in the body.
In women with hypertriglyceridemia or a family history of hypertriglyceridemia, an increased risk of developing pancreatitis during combined oral contraceptives can not be ruled out.
Although a small increase in blood pressure has been reported in many women taking combined oral contraceptives, clinically relevant increases have been rare. Only in rare cases is it necessary to immediately stop taking combined oral contraceptives. If during the reception of combined oral contraceptives in patients with hypertension, the blood pressure values are constantly raised or not reduced with the use of antihypertensive drugs,the use of combined oral contraceptives should be discontinued. If necessary, the use of combined oral contraceptives can be continued if normal blood pressure values are achieved with the help of antihypertensive therapy.
The following conditions develop or worsen, both during pregnancy and when taking combined oral contraceptives, but their association with combined oral contraceptives has not been proven: jaundice and / or pruritus associated with cholestasis; formation of stones in the gallbladder; porphyria; systemic lupus erythematosus; hemolytic-uremic syndrome; chorea; herpes during pregnancy in anamnesis; hearing loss associated with otosclerosis.
In women with hereditary angioedema, exogenous estrogens can cause or exacerbate symptoms of angioedema.
In acute or chronic violations of liver function, it may be necessary to stop using combined oral contraceptives until the liver function returns to normal. Recurrent cholestatic jaundice and / or cholestasis-induced pruritus,which develop for the first time during pregnancy or previous reception of sex hormones, require discontinuation of combined oral contraceptives.
Although combined oral contraceptives may affect peripheral insulin resistance and glucose tolerance, there is no need to change the therapeutic regimen in diabetic patients using low-dose combined oral contraceptives (containing <0.05 mg ethinyl estradiol). Nevertheless, women with diabetes should be carefully observed by a doctor, especially at the beginning of taking combined oral contraceptives.
Also reported was an increase in endogenous depression, epilepsy, Crohn's disease and ulcerative colitis with combined oral contraceptives.
Sometimes chloasma can develop, especially in women with chloasma during pregnancy in the anamnesis. Women with a tendency to chloasma when taking combined oral contraceptives should avoid prolonged exposure to the sun and exposure to ultraviolet radiation.
The medicinal preparation Simicia® contains 48.53 mg of lactose in one tablet. Patients with hereditary intolerance to galactose, lactase deficiency, or glucose / galactose absorption disorders on a lactose-free diet should not take the drug.
Medical examination / consultation
Before starting the use of hormonal contraceptives it is necessary to consult with the treating gynecologist and undergo the appropriate medical examination. Further monitoring and frequency of medical examinations are carried out on an individual basis, but at least once every 6 months.
Simizia ®, like other combined oral contraceptives, does not protect against HIV infection and other sexually transmitted diseases.
Decreased efficiency
The effectiveness of combined oral contraceptives can be reduced in case of missing tablets, disorders of the gastrointestinal tract, or with the simultaneous administration of other medications.
Reduced cycle control
On the background of taking combined oral contraceptives, there may be irregular bleeding (spotting spotting or breakthrough uterine bleeding), especially during the first months of use.Therefore, the evaluation of any irregular bleeding is significant only after an adaptation period of approximately three cycles.
If irregular bleeding recurs or develops after previous regular cycles, nonhormonal causes should be considered and adequate diagnostic measures taken to exclude malignant neoplasms or pregnancy, including diagnostic scraping, should be carried out.
In some women, bleeding "cancellation" may not develop during a break in taking combined oral contraceptives. If combined oral contraceptives are taken according to the rules for taking the drug specified in the instructions, pregnancy is unlikely. However, if before that, combined oral contraceptives were not taken regularly, or if there were no consecutive "bleeding" bleeds in a row, pregnancy should be ruled out before continuing with combined oral contraceptives.