Active substanceParoxetineParoxetine
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  • Dosage form: & nbspfilm-coated tablets
    Composition:

    1 tablet contains:

    active substance paroxetine mesylate 25.83 mg, calculated as paroxetine 20.00 mg;

    Excipients: calcium hydrophosphate anhydrous 317.75 mg, sodium carboxymethyl starch 5.95 mg, magnesium stearate 7.00 mg; film sheath: lactose monohydrate 3.81 mg, hypromellose 2.97 mg, titanium dioxide (E171) 2.60 mg, macrogol 4000 1.06 mg, iron oxide yellow (E172) 0.16 mg, iron oxide red (E172) 0.002 mg .

    Description:round tablets covered with a film shell, from yellow to orange, with engraving "POT 20" on one side and risk on both sides.
    Pharmacotherapeutic group:antidepressant
    ATX: & nbsp

    N.06.A.B   Selective serotonin reuptake inhibitors

    N.06.A.B.05   Paroxetine

    Pharmacodynamics:

    Paroxetine is a potent and selective inhibitor of the capture of 5- hydroxytryptamine (5-HT, serotonin) neurons in the brain, which determines its antidepressive action and effectiveness in the treatment of obsessive-compulsive (OCD) and panic disorder.

    Paroxetine has a low affinity for muscarinic cholinergic receptors, has only weak anticholinergic properties.

    Having selective action, unlike tricyclic antidepressants, paroxetine showed a low affinity for α-1, α-2, βadrenoreceptors, as well as dopamine (D 2), 5-HT1-, 5-HT2-serotonin and Hi-histamine receptors. Paroxetine does not inhibit the central nervous system, does not violate psychomotor function and does not potentiate the inhibitory effect of ethanol on them.

    Like other selective serotonin reuptake inhibitors, paroxetine It causes symptoms of excessive stimulation of 5-HT receptors when administered to animals who have previously received inhibitors of monoamine oxidase (MAO) or tryptophan.

    According to the study of EEG behavior and changes, paroxetine reveals weak activating properties when applied at doses exceeding those required to inhibit the reuptake of serotonin. By its very nature, its activating properties are not "amphetamine-like".

    In healthy volunteers, it does not cause a significant change in blood pressure, heart rate and ECG.

    In contrast to antidepressants, which inhibit the seizure of norepinephrine, paroxetine much weaker suppresses the antihypertensive effects of guanethidine.

    Pharmacokinetics:

    Paroxetine is well absorbed after ingestion and is metabolized first pass through the liver.

    Since the metabolism of paroxetine includes the stage of the first passage through the liver, its amount determined in the systemic circulation is less than that absorbed from the gastrointestinal tract. With an increase in the dose of paroxetine or with multiple dosing, when the load on the body increases, a partial absorption of the effect of the first passage through the liver and a decrease in the plasma clearance of paroxetine occur.As a result, it is possible to increase the concentration of paroxetine in the plasma and fluctuations in pharmacokinetic parameters, which can be observed only in those. patients who, when taking low doses, reach a low concentration of the drug in the plasma.

    Paroxetine is extensively distributed in tissues, and pharmacokinetic calculations show that only 1% of it is present in the plasma, and at therapeutic concentrations 95% is associated with plasma proteins. The equilibrium concentration is reached by 7-14 days after the start of treatment, and the pharmacokinetics during the long-term treatment does not change. The clinical effects of paroxetine (side effect and efficacy) do not correlate with its concentration in the plasma.

    The main metabolites of paroxetine are polar and conjugated, products of oxidation and methylation, which are rapidly excreted from the body, have weak pharmacological activity and do not affect its therapeutic effect. In the metabolism of paroxetine, the selective seizure of serotonin due to its action is not impaired.

    The excretion of unchanged paroxetine in the urine is usually less than 2% of the dose, with metabolites accounting for about 64% of the dose. The intestine excretes about 36% of the dose, probably with bile, but unchanged paroxetine is less than 1% of the dose. In this way, paroxetine is excreted mainly in the form of metabolites.

    Excretion of metabolites of paroxetine from the body is biphasic, first as a result of the metabolism of the first passage through the liver, and then it is controlled by systemic elimination. The half-life is usually about 16-24 hours.

    Pharmacokinetics in special clinical cases

    In patients with severe renal dysfunction (CC less than 30 ml / min) and in patients with impaired liver function, paroxetine concentration in plasma is increased.

    In elderly patients with the use of paroxetine at a dose of 20, 30.40 mg per day, the minimum concentration in the plasma increased by 70-80%, which should be taken into account when selecting the initial dose.

    Indications:

    Depressive disorder;

    obsessive-compulsive disorder (OCD);

    panic disorder, including agoraphobia;

    social anxiety disorder / social phobia;

    generalized anxiety disorder;

    post-traumatic stress disorder.

    Contraindications:Hypersensitivity to paroxetine and other components of the drug; simultaneous use with irreversible MAO inhibitors (MAOI) and within 14 days after their cancellation, reversible MAO inhibitors and within 24 hours after their withdrawal,thioridazine, pimozide; pregnancy; the period of breastfeeding; children under 18 years of age (effectiveness and safety not established); lactose intolerance; deficiency of lactase; glucose-galactose malabsorption.
    Carefully:

    Liver failure; kidney failure; angle-closure glaucoma; hyperplasia of the prostate; mania; pathology of the heart; epilepsy, with unstable epilepsy should avoid taking the drug; convulsive conditions; application of electropulse therapy; taking drugs and the presence of diseases that increase the risk of bleeding; presence of risk factors for increased bleeding; elderly age.

    Pregnancy and lactation:

    Fertility. Paroxetine, as well as other selective serotonin reuptake inhibitors. can affect the quality of seminal fluid. This effect is reversible after discontinuation of the drug.

    Pregnancy. Not revealed teratogenic or selective embryotoxic activity. When taking the drug in the first trimester of pregnancy, the risk of congenital anomalies, in particular of the cardiovascular system, increases.At application on late terms of pregnancy the risk of development of a persistent pulmonary hypertensia of newborns increases.

    Paroxetine is contraindicated in pregnancy and during breastfeeding.

    Dosing and Administration:

    Inside, 1 time per day, in the morning, while eating. The tablet is swallowed whole, washed down with water. The dose is selected individually during the first two to three weeks after the start of therapy and is subsequently adjusted if necessary.

    Depressive disorder - 20 mg once a day. If necessary, the dose is gradually increased by 10 mg / day, to a maximum of 50 mg / day, depending on the patient's response, the maximum daily dose should not exceed 50 mg. After 2 -3 weeks after the start of treatment, the efficacy and need for dose adjustment of paroxetine should be assessed.

    To stop depressive syndromes and prevent relapses, it is necessary to observe the adequate duration of stopping and maintenance therapy, which can last several months or more.

    In obsessive-compulsive disorders the initial therapeutic dose is 20 mg / day followed by a weekly increase of 10 mg.The recommended average therapeutic dose is 40 mg / day, if necessary, the dose may be increased to 60 mg / day. The duration of maintenance therapy is from 6 months or more.

    In panic disorders the initial dose is 10 mg / day (to reduce the possible risk of developing panic symptoms), followed by a weekly increase of 10 mg. The average therapeutic dose is 40 mg / day. The maximum dose is 50 mg / day.

    A low initial dose is recommended to minimize the possible increase in symptoms of panic disorder, which can occur at the beginning of treatment with any antidepressant. It is recommended to observe adequate periods of therapy (from 3 months and more).

    Socially-disturbing disorders / social phobia: the initial dose is 20 mg per day, - in the absence of effect for at least two weeks, an increase in the dose to a maximum of 50 mg per day is possible. The dose should be increased by 10 mg at intervals of at least a week in accordance with the clinical effect. The duration of maintenance therapy is from 3 months or more.

    Generalized anxiety disorders: the initial and recommended dose is 20 mg per day.If there is no effect for at least 2 weeks, an increase in the dose to a maximum of 50 mg / day is possible. The dose should be increased by 10 mg / day at intervals of at least a week in accordance with the clinical effect. The duration of maintenance therapy is from 2 months or more.

    Post-Traumatic Stress Disorder: for most patients, the initial and therapeutic doses are 20 mg per day. In some cases, an increase in the dose of paroxetine to a maximum of 50 mg per day is recommended. The dose should be increased by 10 mg every week in accordance with the clinical effect. The duration of maintenance therapy is from 3 months or more.

    With renal and / or liver failure the recommended dose is 20 mg per day.

    For elderly patients the initial dose is 10 mg, the daily dose should not exceed 40 mg.

    Cancellation of Plizil. AT purposes prevention of the development of the "withdrawal" syndrome. Discontinuation of Plizil is carried out gradually and the following cancellation scheme can be recommended: reduction of the daily dose by 10 mg per week; after reaching a dose of 20 mg per day, patients continue to take this dose for 1 week, and only after that the drug is canceled completely.

    If symptoms, cancellations develop during, lowering the dose, or after drug withdrawal, it is advisable to resume taking a previously prescribed dose. In the future, the doctor may continue to reduce the dose, but more slowly.

    Paroxetine application in children contraindicated because the safety and effectiveness of paroxetine for this age group are not established.

    Side effects:

    The incidence of side effects is classified according to the recommendations of the World Health Organization: very often - not less than 10%; often - not less than 1%, but less than 10%; infrequently - not less than 0,1%, but less than 1%; rarely - not less than 0.01%, but less than 0.1%; very rarely (including isolated cases) - less than 0.01%.

    From the side of the blood and lymphatic system: infrequently - abnormal bleeding, mainly hemorrhage into the skin and mucous membranes (most often bruising); very rarely thrombocytopenia.

    From the nervous system: often - drowsiness, tremor, paresthesia, insomnia, dizziness, abnormal dreams (including nightmares); infrequently - confusion, hallucinations, extrapyramidal symptoms; rarely - mania, anxiety, depersonalization,panic attacks, restless leg syndrome, convulsions, akathisia; Very rarely - serotonin syndrome (agitation, confusion, diaphoresis, hallucinations, hyperreflexia, myoclonus, tachycardia, tremor, increased sweating, chills); the frequency is unknown - suicidal thoughts, suicidal behavior (during paroxetine therapy or in the early period after discontinuation of treatment).

    In patients with motor impairment or taking antipsychotics

    - extrapyramidal disorders with oromandibular dystonia. Some symptoms (drowsiness, insomnia, agitation, confusion, hallucinations, mania) can be caused by the underlying disease.

    Co side of the organ of vision: often - blurred vision; infrequently - mydriasis; very rarely - angle glaucoma ..

    From the organ of hearing: frequency unknown - tinnitus.

    From the side, the cardiovascular system: infrequent - transient increase or decrease in blood pressure (usually in patients with arterial hypertension and anxiety), sinus tachycardia, orthostatic hypotension; very rarely - peripheral edema.

    From the digestive system: very often - nausea, decreased appetite; often

    - dry mouth, vomiting, constipation, diarrhea; rarely - increased activity of "liver" transaminases; very rarely - gastrointestinal bleeding, hepatitis (sometimes, with jaundice), liver failure (with the development of side effects from the liver, the question of the advisability of cessation of therapy should be addressed in cases where a prolonged increase in the indicators of functional tests).

    From the urinary system: rarely - urinary retention, incontinence URGENT.

    From the genitourinary system: very often - sexual dysfunction; rarely - priapism.

    From the endocrine system: rarely - hypoprolactinemia / galactorrhea and hyponatremia (mainly in elderly patients), which is sometimes due to the syndrome of insufficient secretion of antidiuretic hormone.

    From the musculoskeletal system: rarely - arthralgia, myalgia.

    Allergic reactions: very rarely - angioedema, hives; rarely - skin rash; reaction photosensitivity.

    Other: very often - asthenia, cholesterolemia, decreased appetite, increased sweating, yawning, weight gain; very rarely - peripheral edema. The syndrome of "withdrawal" of paroxetine; often - dizziness, sensory disturbances, sleep disorders, anxiety, headache; rarely - agitation, nausea, tremor, confusion, sweating, diarrhea.

    Overdose:

    Symptoms: nausea, vomiting, tremor, dry mouth, mydriasis, blurred vision, nystagmus, fever, changes in blood pressure, headache, involuntary muscle contractions, agitation, anxiety, sinus tachycardia, sweating, drowsiness, bradycardia, nodal rhythm.

    In very rare cases, while taking with other psychotropic drugs and / or alcohol, there were changes in the electrocardiogram, coma, and also death.

    Treatment: gastric lavage, Activated carbon. If necessary, symptomatic therapy. There is no specific antidote.

    Interaction:

    The use of paroxetine with MAOI, including the linezolid antibiotic, which transforms into a nonselective, reversible MAOI, is contraindicated because of the high risk of developing serotonin syndrome.

    A thorough clinical monitoring of the patients' condition is necessary with the simultaneous use of paroxetine with serotonergic drugs, including L- tryptophan, triptans, tramadol, other drugs of the group of selective serotonin reuptake inhibitors (SSRIs), lithium and herbal preparations containing St. John's wort, can develop a serotonin syndrome.

    It is necessary to monitor the patient's condition while using paroxetine with fentanyl, used for general anesthesia or for the treatment of chronic pain.

    With simultaneous use of paroxetine with pimozide at low dose (2 mg once), an increase in the concentration of pimozide was registered, which is explained by the property of paroxetine to inhibit the isoenzyme CYP2D6. Due to the narrow therapeutic index of pimozide and its known ability to lengthen the interval QT, the combined use of pimozide and paroxetine is contraindicated.

    Metabolism and pharmacokinetics of paroxetine can change under the influence of induction or inhibition of microsomal liver enzymes that participate in its metabolism. When paroxetine is used concomitantly with enzyme inhibitors involved in the metabolism of drugs, the feasibility of using a dose of paroxetine at the bottom of the therapeutic dose range should be assessed.The initial dose of paroxetine should not be adjusted if it is used concomitantly with a drug that is a known inducer of enzymes involved in the metabolism of drugs (for example, carbamazepine, rifampicin, phenobarbital, phenytoin). Any subsequent adjustment of the dose of paroxetine should be determined by its clinical effects (tolerability and efficacy).

    Simultaneous use of fosamprenavir / ritonavir with paroxetine led to a significant decrease in the concentration of paroxetine in the blood plasma. Any subsequent correction of the dose of paroxetine should be determined by its clinical effects (tolerability and efficacy).

    Daily intake of paroxetine significantly increases the concentration in the plasma of procyclidine.

    When anticholinergic effects occur, the dose of procyclidine should be reduced. Simultaneous use of paroxetine with anticonvulsant drugs, including carbamazepine, phenytoin, sodium valproate, does not affect their pharmacokinetics and pharmacodynamics in patients with epilepsy.

    Clinical studies have shown,that the absorption and pharmacokinetics of paroxetine are independent or virtually independent (that is, the existing dependence does not require a dose change) from food intake, antacids, digoxin, propranolol, alcohol.

    Like other antidepressants, including other SSRIs, paroxetine inhibits isoenzyme CYP2D6, related to the cytochrome P450 system. Inhibition of isoenzyme CYP2D6 may lead to an increase in plasma concentrations of concomitantly used drugs that are metabolized by this isoenzyme. These drugs include tricyclic antidepressants (including amitriptyline, nortriptyline, imipramine and desipramine), neuroleptics of the phenothiazine series (including perphenazine and thioridazine), risperidone, atomoxetine, some antiarrhythmic drugs of type Ic (including propafenone and flecainide) and metoprolol.

    Simultaneous use of paroxetine with tamoxifen may lead to a decrease in the concentration of the active metabolite of tamoxifen, in blood plasma "due to oppression of the isoenzyme CYP2D6, and as a consequence, reduce the effectiveness of tamoxifen. Investigation of interaction in vivo with simultaneous application, under conditions of equilibrium, of paroxetine and terfenadine, which is the substrate of the enzyme CYP3A4, showed that paroxetine does not affect the pharmacokinetics of terfenadine. In a similar interaction study in vivo There was no effect of paroxetine on the pharmacokinetics of alprazolam, and vice versa. The combination of paroxetine with terfenadine, alprazolam and other drugs that are isoenzyme substrates CYP3A4, does not cause undesirable reactions.

    Care should be taken in patients taking SSRIs simultaneously with anticoagulant drugs (including number of warfarin), drugs known to affect the functional state of platelets and increase the risk of bleeding (including clozapine), phenothiazines, tricyclic antidepressants, non-steroidal anti-inflammatory drugs (including acetylsalicylic acid, other inhibitors of cyclooxygenase- 2).

    Special instructions:

    During treatment with Plizil, patients should be given special attention,who have a history of suicidal behavior or suicidal thoughts, patients under the age of 25 years, as well as patients who have suicidal thoughts prior to treatment. Patients and caregivers should be warned about the need to monitor their deterioration and / or the appearance of suicidal thoughts / suicidal behavior or thoughts of self-harm during the course of treatment, especially at the beginning of treatment and during the change in the dose of Plizil (increase and decrease) . If these symptoms occur, seek medical help immediately.

    It should be remembered that such symptoms as agitation, akathisia or mania may be associated with a major disease or be a consequence of the therapy used. The likelihood of akathisia is highest in the first few weeks of treatment.

    If symptoms of clinical deterioration (including new symptoms) and / or suicidal thoughts / behavior occur, especially if they appear suddenly, the severity of the manifestations increases, or if they are not part of the previous symptomatic complex in this patient, it is necessary to revise the regimen of therapy until the drug Plizil is discontinued.

    In rare cases, against the background of paroxetine treatment, serotonin syndrome or symptomatology similar to malignant neuroleptic syndrome may occur, especially if paroxetine apply simultaneously with other serotonergic drugs and / or antipsychotics. These syndromes pose a potential threat to life and therefore treatment with paroxetine must be discontinued if they occur (they are characterized by the following symptoms: hyperthermia, muscle rigidity, myoclonus, autonomic disorders with possible rapid changes in vital signs, changes in mental status, including confusion, irritability, extremely pronounced agitation, progressing to delirium and coma) and begin supporting symptomatic therapy. Paroxetine should not be used concomitantly with serotonin precursors (such as L-tryptophan, oxytryptan) in connection with the risk of developing serotonergic syndrome.

    A major depressive episode may be the initial manifestation of bipolar disorder. Treatment of such an episode with antidepressant alone can increase the likelihood of accelerated developmentmixed / manic episode in patients at risk of bipolar disorder. Before starting treatment with an antidepressant, a thorough screening should be performed to assess the risk of developing a bipolar disorder in the patient; such screening should include the collection of a detailed psychiatric history, including data on the presence in the family of cases of suicide, bipolar disorder and depression.

    Plizil should be used with caution in patients who have a history of mania.

    Treatment with Plizil should be started cautiously, not earlier than 2 weeks after discontinuation of therapy with MAO inhibitors; the dose of the drug Plizil should be increased gradually until an optimal therapeutic effect is achieved. It is advisable to use caution when treating Plisil with patients with impaired renal function and patients with impaired hepatic function.

    Like other antidepressants, Plizil should be used with caution in patients with epilepsy. Frequency of convulsive seizures in patients taking paroxetine, is less than 0.1%.In the event of a seizure, treatment with Plizil should be stopped.

    There is limited experience in the simultaneous use of paroxetine and electroconvulsive therapy.

    Plizil (like other selective serotonin reuptake inhibitors) can cause mydriasis. Plizil should be used with caution in patients with closed-angle glaucoma.

    In the treatment with Plizil, hyponatremia occurs rarely and is predominantly in elderly patients and is leveled after its withdrawal.

    Hemorrhages in the skin and mucous membranes (including gastrointestinal bleeding) have been reported in patients taking paroxetine, therefore Plizil should be used with caution in patients who simultaneously receive drugs that increase the risk of bleeding in patients with a known tendency to bleeding and patients with diseases predisposing to bleeding.

    In the treatment of patients with heart disease, care should be taken to monitor the functional state of the cardiovascular system.

    As with the abolition of many psychotropic drugs, discontinuing paroxetine treatment (especially severe) can cause symptoms such as dizziness, sensory disturbances (including paresthesia and a feeling of discharge of electric current), sleep disturbances (including bright dreams), agitation or anxiety, nausea , headache, tremor, confusion, consciousness, diarrhea and sweating. In most patients, these symptoms are mild or moderate, and go away spontaneously. Usually withdrawal symptoms occur in the first few days after drug withdrawal, but in rare cases are noted after accidentally missing one dose. As a rule, these symptoms pass independently for two weeks, but in some patients persist up to 2-3 months. and more. It is recommended to gradually reduce the dose of paroxetine (for several weeks or months before its complete cancellation, depending on the patient's condition). The appearance of withdrawal symptoms does not mean that the drug Plizil causes dependence.

    The connection of bone fractures with the use of antidepressants, including, SSRIs, has been revealed. The possibility of bone fractures should be considered when using Plizil.

    When treating or preventing breast cancer drug tamoxifen it should be borne in mind that the effectiveness of tamoxifen decreases with simultaneous use with paroxetine, the risk is more likely to increase with simultaneous application for a long time.

    Effect on the ability to drive transp. cf. and fur:

    Therapy with Ppizil does not cause cognitive impairment and psychomotor retardation. However, as with any psychotropic medications, when using Plizil, patients should be careful when performing actions that require a high concentration of attention and speed of psychomotor reactions.

    Form release / dosage:

    Tablets, film-coated, 20 mg.

    For 10 tablets in a blister of PVC / PE / PVDC / aluminum foil. For 3 blisters together with instructions for use in a cardboard box.

    Packaging:(10) - blister of PVC / PE / PVDC / aluminum foil (3) / 10 tablets in a blister of PVC / PE / PVDC / aluminum foil. For 3 blisters together with instructions for use in a cardboard tutu. / - Cardboard tutu
    Storage conditions:

    Store at a temperature not exceeding 30 ° C.

    Keep out of the reach of children.

    Shelf life:3 years.Do not use after the expiration date.
    Terms of leave from pharmacies:On prescription
    Registration number:LS-002327
    Date of registration:23.03.2012
    The owner of the registration certificate:Pliva of Hrvatska dooPliva of Hrvatska doo Croatia
    Manufacturer: & nbsp
    Representation: & nbspPliva of Hvartska dooPliva of Hvartska doo
    Information update date: & nbsp20.08.2015
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