Before starting therapy with TORVACARD® it is necessary to try to achieve control of hypercholesterolemia by adequate dietotherapy, increase physical activity, weight loss in obese patients and treatment of other conditions. The use of HMG-CoA reductase inhibitors to reduce lipid concentrations in plasma blood can lead to a change in the biochemical parameters of liver function, which should be monitored before the start of therapy, 6 and 12 weeks after starting the drug TORVACARD® and after each dose increase, and also periodically, for example, every 6 months. An increase in the activity of "hepatic" transaminases in the serum can be observed during therapy with the drug TORVACARD® usually in the first three months. Patients who have an increased activity of "liver" transaminases should be under the supervision of a doctor before returning to normal.
In a retrospective analysis of stroke subtypes in patients without IHD who had recently undergone a stroke or TIA, a high incidence of hemorrhagic stroke in patients who received atorvastatin in a dose of 80 mg, compared with placebo. An increased risk was noted at the beginning of the study in patients with previous hemorrhagic stroke or lacunar cerebral infarction. The ratio of risk and benefit when taking atorvastatin 80 mg in patients who underwent hemorrhagic stroke or lacunar infarction of the brain, not determined,and you should carefully evaluate the potential risk hemorrhagic stroke before starting treatment with TORVACARD®.
Influence on skeletal musculature
Treatment with TORVACARD® In rare cases, it can cause myalgia, myositis and myopathy, which can progress to rhabdomyolysis, a condition potentially life-threatening, characterized by a significant increase in CKK activity (> 10 times the upper limit of normal), myoglobinemia, and Myoglobinuria, which can lead to kidney failure. The drug TORVACARD® can cause an increase in the activity of serum CK, which should be taken into account in differential diagnosis chest pain. Patients should be warned that they should immediately consult a doctor if unexplained pain or weakness in the muscles, especially if they are accompanied by malaise or fever. Drug therapy TORVACARD® should be temporarily discontinued or completely canceled, if there are signs of possible myopathy or the presence of a risk factor for developing renal failure against rhabdomyolysis (for example, severe acute infection, hypertension, serious surgical interference, trauma, severe metabolic, endocrine and water-electrolyte disorders and uncontrolled convulsions).
Before starting treatment
The drug TORVACARD® follows prescribe with caution patients with factors predisposing to the development of rhabdomyolysis. The activity of CK should be measured before starting treatment with statins in the following situations:
- with renal insufficiency;
- with hypothyroidism;
- in the presence of personal or family history of hereditary muscle diseases;
- if there is evidence of a previous toxic effect on skeletal musculature caused by taking statins or fibrates;
- with liver disease and / or alcohol abuse in history;
- in patients older than 70 years, such a measurement is necessary in the presence of other predisposing factors of rhabdomyolysis;
- In situations where there may be an increase in the concentration of atorvastatin in the blood plasma, for example, in drug interactions and in special populations, including genetic subpopulations.
In such situations, the risk ratio of adverse reactions to the possible benefits of treatment should be assessed, in addition, careful monitoring of the patient's condition is recommended.
If the initial indices of CPK activity are significantly increased (> 5 times compared with the upper limit of the norm), treatment should not be started.
Measurement of creatine phosphokinase
The determination of the activity of CK should not be performed after physical exertion or in the presence of any likely alternative cause of its increase, as this makes it difficult to interpret the results of the test. If the baseline CPK activity is significantly increased (> 5 times, as compared to the upper limit of the norm), a second analysis should be performed 5-7 days later to confirm the results.
During the treatment period
Patients should be warned that they should seek medical attention immediately if pain, cramps or muscle weakness occurs, especially if they are accompanied by a malaise or fever.
If such symptoms occur in patients during treatment with TORVACARD®, they should evaluate the activity of CK. With a significant increase in indices (> 5 times, compared with the upper limit of the norm), treatment with TORVACARD® should be discontinued.
If the muscle symptoms are severe and cause daily discomfort,even if the CKK activity indices ns exceed the upper limit of the norm by less than 5 times, consideration should be given to discontinuing treatment with TORVACARD®.
When resolving the symptoms and returning the CK values to normal values, a decision may be made to prescribe a second course of atorvastatin or administration alternative statin at the lowest dose under close supervision.
Treatment with atorvastatin should be discontinued with a clinically significant increase in CPK activity (> 10 times, as compared with the upper limit of the norm), or in diagnosing rhabdomyolysis, or if it is suspected.
Concomitant treatment with other drugs
Risk of rhabdomyolysis increases with simultaneous application atorvastatin and certain drugs that can increase the concentration of atorvastatin in the blood plasma, such as potent inhibitors of the isoenzyme CYP3A4 or transport proteins (for example, ciclosporin, telithromycin, clarithromycin, delavirdine, styipentol, ketoconazole, voriconazole, itraconazole, posaconazole and HIV protease inhibitors, including ritonavir, lopinavir, atazanavir, indinavir, darunavir etc.).The risk of myopathy can also increase with simultaneous application of gemfibrozil and other derivatives of fibroic acid, erythromycin, nicotinic acid in lipid-lowering doses (more than 1 g per day) and ezetimibe. Where possible, instead of these drugs should be used alternative (non-interacting) drugs.
In cases where simultaneous application of these lmedicines and Atorvastatin, the potential benefit and risk of concomitant therapy should be carefully evaluated. When patients receive medications that increase the concentration of atorvastatin in blood plasma, it is recommended to prescribe the drug TORVACARD® in the minimum maximum dose. In addition, in the case of powerful inhibitors isoenzyme CYP3A4, recommended apply the minimum initial dose of the drug TORVACARD® and establish a clinical observation of the condition of these patients.
The simultaneous use of the drug TORVACARD® and fusidic acid is not recommended, therefore, it may be decided to temporarily stop the drug treatment TORVACARD® for the period of therapy with fusidic acid.
Use in children
The safety of the drug in children is not established.
Interstitial lung disease
With the use of certain HMG-CoA reductase inhibitors, especially with prolonged therapy, there were rare cases of interstitial lung disease have been reported. Its manifestations may include shortness of breath, an unproductive cough and a worsening of the general condition (increased fatigue, weight loss and fever). If suspected of interstitial lung disease, therapy with TORVACARD® should be discontinued.
Diabetes
Preparations of the class of statins are capable of cause an increase in the concentration of glucose in the blood. In some patients at high risk of developing diabetes, such changes can lead to its manifestation, which is an indication for the appointment hypoglycemic therapy. However, a reduction in the risk of cardiovascular disease when taking inhibitors of HMG-CoA reductase (statins) exceeds the risk of developing diabetes, so this factor should not serve as a basis for the abolition of statin treatment. For patients at risk (fasting blood glucose 5,6-6,9 mmol / l, body mass index (BMI)> 30 kg / m2, hypertriglyceridemia, history of arterial hypertension), medical follow-up should be established and regularly monitor biochemical parameters.
Patients with rare hereditary diseases
The drug TORVACARD® contains lactose. Patients with rare hereditary diseases, such as galactose intolerance, lactase deficiency or glucose-galactose malabsorption, the use of this drug is contraindicated.