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Celecoxib | Dilax capsules 200 mg 30 pcs

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Description

Pharmacological action

Pharmacotherapeutic group

NSAIDs (non-steroidal anti-inflammatory drug).

ATX

M.01.AH01 Celecoxib

Pharmacodynamics

Celecoxib has anti-inflammatory, analgesic and antipyretic effects, blocking the formation of inflammatory prostaglandins (Pg) mainly due to

due to inhibition of cyclooxygenase-2 (CO). Induction of COX-2 occurs in response to inflammation and leads to the synthesis and accumulation of Pg, primarily PgE2, which causes an increase in the manifestations of inflammation (edema and pain). In therapeutic doses in humans, celecoxib does not significantly inhibit cyclooxygenase-1 (COX-1) and does not affect the concentrations of Pg that are synthesized as a result of COX-1 activation, as well as normal physiological processes associated with COX-1 and occurring in tissues primarily the stomach, intestines and platelets.

Impact on renal function

Celecoxib reduces kidney excretion of PgE2 and 6-keto-PgFl (a prostacyclin metabolite), but does not affect the serum concentration of thromboxane B2 (TxB2) and kidney excretion of 11-dehydro-TxB2, a thromboxane metabolite (both are TsOG products 1).

Celecoxib does not cause a decrease in glomerular filtration rate in elderly patients and patients with chronic renal failure (CRF), transiently reduces sodium excretion. In patients with arthritis, the incidence of peripheral edema, arterial hypertension, and heart failure was comparable to that with the use of non-selective COX inhibitors that have inhibitory activity against COX-1 and COX-2. This effect was most pronounced in patients receiving diuretic therapy. However, there was no increase in the frequency of cases of increased blood pressure and the development of heart failure, and peripheral edema was mild and passed independently.

Pharmacokinetics

Absorption

When taken on an empty stomach, celecoxib is well absorbed, reaching a maximum concentration (Cmax) in blood plasma after about 2-3 hours. The max in plasma after taking 200 mg of celecoxib is 705 ng / ml. The absolute bioavailability of celecoxib has not been studied. Cmax and the area under the concentration-time curve (AUC) are approximately proportional to the dose taken in the range of therapeutic doses up to 200 mg 2 times a day, when celecoxib is used in higher doses, the degree of increase in Cmax and AUC is less proportional.

Effect of food intake

Taking celecoxib along with fatty foods increases the time to reach Cmax by about 4 hours and increases absorption by about 20%.

Distribution of

The degree of binding to plasma proteins is not dependent on the concentration of celecoxib in blood plasma and is about 97%. Celecoxib does not bind to red blood cells. Celecoxib crosses the blood-brain barrier.

Metabolism

Celecoxib is metabolized mainly with the participation of the cytochrome P450 isoenzyme (CYP)

CYP2C9 in the liver by hydroxylation, oxidation and partial glucuronidation (see Interaction with other drugs). The resulting metabolites are pharmacologically inactive with respect to COX-1 and COG-2. The activity of the CYP2C9 isoenzyme is reduced in patients with genetic polymorphism, such as homozygous for the CYP2C9 * 3 isoenzyme polymorphism, which leads to a decrease in the efficiency of enzymes.

Excretion

Celecoxib is excreted through the intestines and kidneys in the form of metabolites (57% and 27%, respectively), less than 1% of the dose taken is unchanged. With repeated use, the half-life (T1 / 2) is 8-12 hours, and the clearance is about 500 ml / min. With repeated use, equilibrium plasma concentrations are reached by the 5th day of administration. The variability of the main pharmacokinetic parameters (AUC, Cmax, T1 / 2) is about 30%. The average volume of distribution in equilibrium is approximately 500 L / 70 kg in young healthy patients, indicating a wide distribution of celecoxib in the tissues.

Pharmacokinetics in certain groups of patients

Elderly patients

Patients older than 65 years show an increase of 1.5-2 times the average values ​​of Cmax and AUC, which is more due to changes in body weight, rather than age (in elderly patients, as as a rule, there is a lower average body weight than younger people, due to which, ceteris paribus, higher concentrations of celecoxib are achieved). For the same reason, older women usually have a higher plasma concentration of celecoxib than older men. The indicated pharmacokinetic features, as a rule, do not require dose adjustment. However, in elderly patients weighing less than 50 kg, treatment should be started with the minimum recommended dose.

Pasa

In representatives of the Negroid race, the AUC of celecoxib is approximately 40% higher than in representatives of the Caucasoid race. The causes and clinical significance of this fact are unknown, therefore it is recommended that treatment of persons of the Negroid race be started with the minimum recommended dose.

Impaired liver function

Celecoxib plasma concentrations in patients with mild hepatic insufficiency (class A according to the Child-Pugh classification) vary slightly. In patients with moderate liver failure (class B according to the Child-Pugh classification), the concentration of celecoxib in blood plasma can increase almost 2 times.

Impaired renal function

In elderly patients with a glomerular filtration rate (GFR)> 65 ml / min / 1.73 m2 associated with age-related changes, and in patients with a GFR of 35-60 ml / min / 1.73 m2 The pharmacokinetics of celecoxib does not change. There is no significant correlation between serum creatinine concentration (or creatinine clearance (CC)) and celecoxib clearance. It is assumed that the presence of severe renal failure does not affect the clearance of celecoxib, since the main route of its excretion is the conversion of inactive metabolites in the liver.

Indications

Symptomatic treatment of osteoarthritis, rheumatoid arthritis and ankylosing spondylitis

pain (back pain, musculoskeletal, postoperative and other types of pain)

treatment of primary dysmenorrhea.

Contraindications

Hypersensitivity to celecoxib or any other component of the

drug hypersensitivity to other sulfonamide derivatives

complete or incomplete combination of bronchial asthma, recurrent nasal polyposis and paranasal sinuses and other intolerance to acetyls or including COX-2 inhibitors (including history)

period after coronary artery bypass grafting surgery

active erosive and ulcerative lesions of the gastric or duodenal mucosa, gastric and duodenal ulcer in the acute stage or gastrointestinal intestinal diseases (Crohn’s disease, ulcerative colitis) in the exacerbation phase of

heart failure (NYHA class II – IV functional class)

clinically confirmed coronary artery disease heart disease, peripheral arterial disease and cerebrovascular disease in the severe stage

hemorrhagic stroke

subarachnoid hemorrhage

pregnancy

breastfeeding period (see “Pregnancy and lactation”)

severe liver failure (Child-Pugh class C) (no experience)

severe renal failure (creatinine Cl less than 30 ml / min), progressive kidney disease, confirmed hyperkalemia (no experience application)

age up to 18 years (no experience of use)

lactose intolerance, lactase deficiency or glucose-galactose malabsorption syndrome (Dilax® preparation contains lactose).

Precautions: gastrointestinal tract diseases (gastric or duodenal ulcer, ulcerative colitis, Crohn’s disease, history of bleeding), the presence of Helicobacter pylori infection, concomitant use with digoxin, anticoagulants (e.g. warfarin), antiplatelet agents (e.g. acetylsalicylic acid)–60 ml / min), a significant decrease in BCC (including after surgery), CVS diseases, arterial hypertension (see “Special Instructions”), cerebrovascular diseases, dyslipidemia / hyperlipidemia, diabetes mellitus, peripheral artery disease, prolonged the use of NSAIDs, severe somatic diseases, elderly patients (including those receiving diuretics, weakened patients with low body weight), smoking, tuberculosis, alcoholism.

Use during pregnancy and lactation

There are insufficient data on the use of celecoxib in pregnant women. The potential risk of using Dilax® during pregnancy has not been established, but it cannot be ruled out.

In accordance with the mechanism of action, when using NSAIDs, including celecoxib, some women may develop changes in the ovaries, which can cause complications during pregnancy or impaired fertility. Women who are planning a pregnancy or are being examined for infertility should consider discontinuing NSAIDs, including celecoxib.

Celecoxib, a member of the group of inhibitors of GHG synthesis, when taken during pregnancy, especially in the third trimester, can cause weakness of uterine contractions and premature closure of the ductus arteriosus. The use of inhibitors of GHG synthesis in early pregnancy can adversely affect the course of pregnancy.

There is limited evidence for the excretion of celecoxib with breast milk. Studies have shown that celecoxib is excreted in breast milk in very low concentrations.in a nursing baby, the appropriateness of canceling either breastfeeding or taking celecoxib should be assessed, given the importance of taking Dilax® for the mother.

Composition

active substance:

celecoxib granule substance 265.95 mg

(active substance granule – celecoxib 200 mg)

excipients granule substance: lactose monohydrate – 49.75 mg sodium lauryl sulfate – 8.1 mg povid K30 – 6.75 mg croscarmellose sodium – 1.35 mg

excipients: croscarmellose sodium – 1.35 mg magnesium stea at – 2.7 mg hard gelatine capsules

№1

housing: titanium dioxide (E171) – 1% iron oxide yellow dye (E172) – 1% Gelatin – 100%

cap: titanium dioxide (E171) – 1% dye iron oxide yellow (E172) – 1% gelatin – up to 100%

Dosage and administration

Inside, without chewing, drinking with water, regardless of food intake.

Since the risk of cardiovascular complications may increase with increasing dose and duration of DilaxВ®, the minimum effective dose should be taken with the shortest possible course. The maximum recommended daily dose for long-term use is 400 mg.

Symptomatic treatment of osteoarthrosis. The recommended dose is 200 mg / day in 1 or 2 doses.

Symptomatic treatment of rheumatoid arthritis. The recommended dose is 100 or 200 mg 2 times a day.

Symptomatic treatment of ankylosing spondylitis. The recommended dose is 200 mg / day in 1 or 2 doses. In some patients, the effectiveness of 400 mg 2 times a day was noted.

Treatment of pain and primary dysmenorrhea. The recommended initial dose is 400 mg, followed by, if necessary, taking an additional dose of 200 mg on the first day. In the following days, the recommended dose is 200 mg 2 times a day, as needed.

Elderly patients. Usually, dose adjustment is not required. However, in patients weighing less than 50 kg, treatment is best started with the minimum recommended dose.

Impaired liver function. In patients with mild severity of liver failure (Child-Pugh class A classification), dose adjustment is not required. In the case of moderate liver failure (class B according to the Child-Pugh classification), the initial recommended dose of the drug should be reduced by half. There is no experience with the use of DilaxВ® in patients with severe liver failure (class C according to the Child-Pugh classification) (see “Contraindications”).

Impaired renal function. In patients with mild to moderate renal failure, dose adjustment is not required. There is no experience with the use of DilaxВ® in patients with severe renal failure (see “Special Instructions”, “Contraindications”).

Concomitant use with fluconazole. With the simultaneous use of fluconazole (an inhibitor of the isoenzyme CYP2C9) and the drug DilaxВ®, the initial recommended dose should be reduced by half. Caution should be exercised while using with other inhibitors of the isoenzyme CYP2C9.

Slow substrate metabolism of the CYP2C9 isoenzyme. In patients who are slow metabolizers or with a suspicion of such a condition, DilaxВ® should be used with caution, because this can lead to the accumulation of celecoxib in high plasma concentrations. In such patients, the initial recommended dose should be reduced by 2 times.

Side effects

Classification of the frequency of development of side effects WHO: very often -? 1/10 often – from? 1/100 to <1/10 infrequently - from? 1/1000 to <1/100 rarely - from? 1/10000 to <1/1000 is very rare - from <1/10000. From the CCC side: often – peripheral edema, increased blood pressure, including worsening of the course of arterial hypertension infrequently – hot flashes, palpitations rarely – CHF, arrhythmia, tachycardia, ischemic stroke and myocardial infarction. From the digestive system: often – abdominal pain, diarrhea, dyspepsia, flatulence, vomiting infrequently – dental diseases (post-extraction hole alveolitis) rarely – stomach ulcer and duodenal ulcer, ulceration of the esophagus very rarely – intestinal perforation, pancreatitis. From the nervous system: often – dizziness, insomnia infrequently – anxiety, increased muscle tone, drowsiness rarely – confusion (psychosis). From the urinary system: often – urinary tract infection. From the respiratory system: often – bronchitis, cough, sinusitis, upper respiratory tract infections infrequently – pharyngitis, rhinitis. From the skin: often – itchy skin (including generalized), skin rash infrequently – urticaria, ecchymosis rarely – alopecia. From the hemopoietic organs: infrequently – anemia rarely – thrombocytopenia. From the senses: infrequently – tinnitus, blurred visual perception. Laboratory indicators: infrequently – increased activity of liver enzymes (including ALT and AST). Allergic reactions: rarely – angioedema is very rare – bullous rashes (bullous dermatitis). Other: infrequently – exacerbation of allergic diseases (hypersensitivity), flu-like syndrome, accidental injuries, facial edema. According to a post-marketing observation Allergic reactions: very rarely – anaphylaxis (anaphylactic reactions). From the nervous system: rarely – hallucinations are very rare – hemorrhage in the brain, aseptic meningitis, loss of taste, loss of smell. From the sensory organs: infrequently – conjunctivitis. From the CCC: rarely – pulmonary embolism is very rare – vasculitis. From the digestive system: rarely – gastrointestinal bleeding, hepatitis very rarely – liver failure, fulminant hepatitis, liver necrosis (see “Special instructions”, “Effect on liver function”), cholestasis, cholestatic hepatitis, jaundice. From the skin: rarely – photosensitivity reactions very rarely – Stevens-Johnson syndrome, erythema multiforme, toxic epidermal necrolysis, drug rash in combination with eosinophilia and systemic symptoms (DRESS or hypersensitivity syndrome), acute generalized exanthematous pustulosis, exfoliative dermatitis. From the urinary system: rarely – acute renal failure (see “Special instructions”, subsection “Effect on renal function”), hyponatremia is very rare – interstitial nephritis, nephrotic syndrome, minimal impaired renal function. From the reproductive system: rarely – menstrual irregularity, frequency is unknown – decreased fertility in women * (see. “Use during pregnancy and lactation”). Other: infrequently – chest pain. * Women planning a pregnancy were excluded from the study, so they were not taken into account when calculating the frequency of occurrence. Drug Interactions In vitro studies have shown that celecoxib, although not a substrate of the CYP2D6 isoenzyme, inhibits its activity. Therefore, there is a likelihood of drug interaction in vivo with drugs whose metabolism is associated with the CYP2D6 isoenzyme. Warfarin and other anticoagulants: with simultaneous use, prolongation of PV is possible. Fluconazole, ketoconazole: with the simultaneous use of 200 mg of fluconazole 1 time per day, a 2-fold increase in the concentration of celecoxib in blood plasma is noted, which is associated with inhibition of the metabolism of celecoxib fluconazole through the CYP2C9 isoenzyme. Patients taking fluconazole (an inhibitor of the CYP2C9 isoenzyme) should halve the recommended dose of celecoxib (see “Dosage and Administration”). Ketoconazole (an inhibitor of the CYP3A4 isoenzyme) does not have a clinically significant effect on celecoxib metabolism. Dextromethorphan and metoprolol: it was found that the simultaneous use of celecoxib at a dose of 200 mg per day led to an increase in the concentrations of dextromethorphan and metoprolol (substrates of the isoenzyme CYP2D6) 2.6 and 1.5 times, respectively. Such an increase in concentrations is associated with inhibition of the metabolism of substrates of the isoenzyme CYP2D6 celecoxib by inhibiting the activity of the isoenzyme CYP2D6 itself. Methotrexate: No pharmacokinetic clinically significant interactions between celecoxib and methotrexate have been observed. Antihypertensive drugs, including ACE inhibitors / antagonists of ARA II, diuretics and beta-blockers: inhibition of GHG synthesis can reduce the antihypertensive effect, including ACE / ARA II inhibitors, diuretics and beta-blockers. This interaction should be considered with the simultaneous use of celecoxib with ACE / ARA II inhibitors, diuretics and beta-blockers. However, there was no significant pharmacodynamic interaction with lisinopril with respect to the effect on blood pressure. In elderly patients, in patients in case of dehydration (i.e. including patients receiving diuretic therapy) or in patients with impaired renal function, the simultaneous use of NSAIDs, including selective COX-2 inhibitors, with ACE inhibitors, ARA II can lead to deterioration of renal function, including possible acute renal failure. Typically, these effects are reversible. In this regard, caution should be exercised while using these drugs. In such cases, it is advisable to first rehydrate and then start therapy with Dilax®. In addition, the possibility of monitoring renal function at the beginning of therapy and periodically during the simultaneous use of drugs should be considered. Cyclosporine: Given that NSAIDs have an effect on renal synthesis of GHGs, they may increase the risk of nephrotoxicity when used simultaneously with cyclosporine. Diuretics: NSAIDs in some patients can reduce the natriuretic effect of furosemide and thiazides by reducing renal synthesis of PG. This must be considered when using celecoxib. Oral contraceptives: celecoxib does not have a clinically significant effect on the pharmacokinetics of the combined contraceptive (1 mg norethisterone / 35 μg ethinyl estradiol). Lithium: with the simultaneous use of lithium salts at a dose of 450 mg 2 times a day and celecoxib at a dose of 200 mg 2 times a day, an increase in lithium concentration in blood plasma by about 17% was noted. Patients taking lithium preparations should be closely monitored while using or discontinuing celecoxib. Other NSAIDs: simultaneous use of celecoxib and other NSAIDs (not containing acetylsalicylic acid) should be avoided (the risk of side effects increases). Other drugs: There were no clinically significant interactions between celecoxib and antacids (magnesium / aluminum hydroxide), omeprazole, glibenclamide, phenytoin, or tolbutamide. Celecoxib does not affect the antiplatelet effect of acetylsalicylic acid in low doses. Celecoxib does not have an antiplatelet effect on platelets, so they should not replace acetylsalicylic acid in order to prevent cardiovascular diseases. In healthy volunteers, NSAIDs do not affect the pharmacokinetics of digoxin. Nevertheless, with the simultaneous use of digoxin and indomethacin and ibuprofen in patients, an increase in the concentration of digoxin in the blood plasma was noted. This must be taken into account while using with other drugs that increase the concentration of digoxin in blood plasma. There is no information on the interaction of celecoxib and digoxin. Given the other effects of celecoxib on CVS, it should be taken with caution at the same time as digoxin. In this case, it is recommended to carefully monitor adverse reactions. Celecoxib is predominantly metabolized in the liver by the CYP2C9 isoenzyme. Since barbiturates are inducers of the CYP2C9 isoenzyme, a simultaneous use with celecoxib may cause a decrease in the concentration of the latter in blood plasma. Overdose Clinical data on overdose are limited. A single dose of up to 1200 mg and repeated use of up to 1200 mg 2 times a day was not accompanied by clinically significant side effects. Treatment: If an overdose is suspected, supportive therapy is necessary. Dialysis is supposedly not effective, as the relationship of celecoxib with plasma proteins is high (97%). Effective substance celecoxib Terms and conditions otpuska IZ drugstore prescription lekarstvennaja form kapsul

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4 reviews for Celecoxib | Dilax capsules 200 mg 30 pcs

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