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Vega Extra Cobra (sildenafil citrate)

Vega Extra Cobra (sildenafil citrate)

$ 1.02 per pill

Quick Overview

A single dose of 100 mg of Sildenafil Vega Extra 130 Mg Cobra together with erythromycin (500 mg/day 2 times a day for 5 days), a moderate inhibitor of CYP3A4 isoenzyme, while achieving a constant concentration of erythromycin in the blood, leads to an increase in the AUC of Sildenafil Vega Extra 130 Mg Cobra by 182%.

Vega Extra Cobra® (Signature)

Vega Extra Cobra (Sildenafil citrate) 120 mg

Vega Extra Cobra
Sildenafil citrate
120 mg × 180 pills
$ 193.90 $ 183.95
$ 1.02 per pill
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Vega Extra Cobra
Sildenafil citrate
120 mg × 120 pills
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Vega Extra Cobra
Sildenafil citrate
120 mg × 90 pills
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Vega Extra Cobra
Sildenafil citrate
120 mg × 60 pills
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Vega Extra Cobra
Sildenafil citrate
120 mg × 30 pills
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Vega Extra Cobra
Sildenafil citrate
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Information

The pharmacokinetics of Sildenafil Tablets Vega Extra Cobra in the recommended dose range is linear.

Suction. After intake of Vegal Extra is rapidly absorbed. Absolute bioavailability averages about 40% (25 to 63%). In vitro Sildenafil Vega Extra 130 Mg Cobra at a concentration of about 1.7 ng/ml (3.5 nm) inhibits the activity of PDE-5 50%. After a single dose of Sildenafil Vega Extra 130 Mg Cobra 100 mg average Cmax free Sildenafil Vega Extra 130 Mg Cobra in plasma men is about 18 ng/ml (38 nm). Cmax when taking Cobra Vega Extra Strong 120 Mg inside fasting is achieved for an average of 60 minutes (from 30 to 120 minutes). When taken in combination with fatty foods, the rate of absorption decreases: Cmax decreases by an average of 29%, and Tmax increases by 60 minutes, but the degree of absorption does not change significantly (AUC decreases by 11%).

Distribution. The average Vss of Sildenafil Vega Extra 130 Mg Cobra is 105 l. the Association of Vega Extra Cobra 120 and its main circulating N-demethyl metabolite with plasma proteins is about 96% and does not depend on the total concentration of the drug. Less than 0.0002% of the dose of Sildenafil Vega Extra 130 Mg Cobra (an average of 188 ng) was found in sperm 90 minutes after taking the drug.

Metabolism. Sildenafil Vega Extra 130 Mg Cobra is metabolized mainly in the liver by the action of CYP3A4 isoenzyme (main pathway) and CYP2C9 isoenzyme (minor pathway). The main circulating active metabolite, formed as a result of N-demethylation of Cobra Vega Extra Strong 120 Mg, undergoes further metabolism. The selectivity of this metabolite against PDE is comparable to that of Vega Extra 120 Mg, and its activity against PDE-5 in vitro is about 50% of the activity of Cobra Vega 120. The concentration of the metabolite in the blood plasma of healthy volunteers was about 40% of the concentration of Vega Extra Cobra 120. N-demethyl metabolite undergoes further metabolism; its T1/2 is about 4 no.

Breeding. The total clearance of Vegal Extra is 41 l/h, and the final T1/2 — 3-5 h. After oral administration, as well as after I/V, Vega Cobra is excreted as metabolites, mainly by the intestine (about 80% oral dose) and to a lesser extent by the kidneys (about 13% oral dose).

Cardiovascular complications

During the post-marketing use of Sildenafil Vega Extra 130 Mg Cobra for the treatment of erectile dysfunction, adverse events such as severe cardiovascular complications (including myocardial infarction, unstable angina, sudden cardiac death, ventricular arrhythmia, hemorrhagic stroke, transient ischemic attack, hypertension and hypotension) were reported, which had a temporary connection with the use of Sildenafil Vega Extra 130 Mg Cobra. Most of these patients, but not all of them, had risk factors for cardiovascular complications. Many of these adverse events were observed shortly after sexual activity, and some were observed after taking Sildenafil Vega Extra 130 Mg Cobra without subsequent sexual activity. It is not possible to establish a direct link between the reported adverse events and those or other factors.

Visual impairment

In rare cases, during post-approval use of all of the inhibitors of PDE5, including Vegah Extra 130, reported NESN is a rare disease and the cause of the decrease or loss of vision. Most of these patients had risk factors, such as decreased ratios of excavation diameter to optic disc (stagnant disc), age over 50, diabetes, hypertension, CHD, hyperlipidemia, and Smoking. In an observational study evaluated whether recent use of drugs class of inhibitors PDE-5 with an acute onset NESN. The results indicate approximately a 2-fold increase in risk of developing NESN within 5T1/2 after application of the PDE-5 inhibitor. According to published literature, the annual incidence of npins IS 2.5–11.8 cases per 100,000 men aged ≥50 years in the General population. Patients should be advised to stop Sildenafil Vega Extra 130 Mg therapy in case of sudden loss of vision and consult a doctor immediately. Persons who have already had a case NESN have an increased risk of relapse NESN. Therefore, the doctor should discuss this risk with such patients, as well as the potential chance of adverse effects of PDE-5 inhibitors. PDE-5 inhibitors, including Sildenafil Vega Extra 130, in such patients should be used with caution and only in situations where the expected benefit outweighs the risk.

When using the drug Vega Cobra 120 Mg in doses exceeding the recommended, adverse events were similar to those noted above, but usually more common.

*Side effects identified during post-marketing studies.

Interaction

Effect of other drugs on the pharmacokinetics of Vega Coin

The metabolism of Sildenafil Vega Extra 120 occurs mainly under the action of CYP3A4 isoenzyme (main pathway), so inhibitors of this isoenzyme can reduce the clearance of Cobra Vega 120 Mg, and inducers, respectively, increase the clearance of Vega Extra Strong 120. A decrease in the clearance of Sildenafil Vega Extra 130 Mg Cobra with simultaneous use of inhibitors of CYP3A4 isoenzyme (ketoconazole, erythromycin, cimetidine).

Cimetidine (800 mg), a nonspecific inhibitor of CYP3A4 isoenzyme, when taken together with Cobra Vega Extra Strong 120mg (50 mg) causes an increase in the concentration of Sildenafil Vega Extra 130 Mg Cobra in plasma by 56%.

A single dose of 100 mg of Vegah Extra 120 Mg together with erythromycin (500 mg/day 2 times a day for 5 days), a moderate inhibitor of CYP3A4 isoenzyme, while achieving a constant concentration of erythromycin in the blood, leads to an increase in the AUC of Vegal Extra by 182%.

When co-administered Sildenafil Vega Extra 130 Mg Cobra (once 100 mg) and saquinavir (1200 mg/day 3 times daily), an inhibitor of HIV protease and of CYP3A4, on the background to achieve a constant concentration of saquinavir in the blood, Cmax of Vega Extra was increased by 140% and the AUC increased by 210%.

Stronger inhibitors of CYP3A4 isoenzyme, such as ketoconazole and Itraconazole, can cause more pronounced changes in the pharmacokinetics of Vegah Extra 120 Indication.

The simultaneous use of Cobra Vega Extra (100 mg once) and ritonavir (500 mg 2 times a day), an inhibitor of HIV protease and a strong inhibitor of cytochrome P450, on the background to achieve a constant concentration of ritonavir in the blood leads to an increase in Cmax of Sildenafil Vega Extra 130 Mg Cobra by 300% (4 times), a AUC by 1000% (11-fold). After 24 h, the concentration of Vega Visa in blood plasma is about 200 ng/ml (after a single application of one Cobra Vega — 5 ng/ml). This is consistent with the ritonavir effect on a wide range of cytochrome P450 substrates. Vega Extra 120 does not affect the pharmacokinetics of ritonavir. Given these data, the simultaneous reception of ritonavir and Sildenafil Vega Extra 130 Mg Cobra is not recommended. In any case, the maximum dose of Sildenafil Vega Extra 130 Mg Cobra under any circumstances should not exceed 25 mg for 48 hours. If Vega Extra 120 is taken in the recommended doses, patients receiving strong inhibitors of CYP3A4 isoenzyme at the same time, then Cmax free Sildenafil Vega Extra 130 Mg Cobra does not exceed 200 nm, and the drug is well tolerated.

Single administration of antacid (magnesium hydroxide/aluminum hydroxide) does not affect the bioavailability of Sildenafil Vega Extra 130 Mg Cobra.

Studies involving healthy volunteers with simultaneous use of endothelin receptor antagonist, bosentan (CYP3A4 isoenzyme inducer (moderate), CYP2C9, and possibly CYP2C19) in Css (125 mg 2 times a day) and Sildenafil Vega Extra 130 Mg Cobra in Css (80 mg 3 times a day) showed a decrease in AUC and Cmax Sildenafil Vega Extra 130 Mg Cobra by 62.6 and 52.4%, respectively. Sildenafil Vega Extra 130 Mg Cobra increased the AUC and Cmax of bosentan by 49.8 and 42%, respectively.

It is assumed that the simultaneous use of Sildenafil Vega Extra 130 Mg Cobra with powerful inducers of CYP3A4 isoenzyme, such as rifampicin, can lead to a greater decrease in the concentration of Vega Cobra in blood plasma.

CYP2D6 isoenzyme inhibitors (SSRIs, tricyclic antidepressants), thiazide and thiazide-like diuretics, ACE inhibitors and calcium antagonists have no effect on the pharmacokinetics of Sildenafil Vega Extra 130 Mg Cobra.

Azithromycin (500 mg/day for 3 days) has no effect on AUC, Cmax, Tmax, excretion rate constant and T1/2 Vega Extra Strong 120 or its main circulating metabolite.

Clinical data

In a placebo-controlled cross-examination of patients with proven early age macular degeneration (n=9), Vega Extra was well tolerated at a single dose of 100 mg. There were no clinically significant changes in vision evaluated by special visual tests (visual acuity, Amsler lattice, color perception, color simulation, Humphrey perimeter and photostress).

Efficiency. The efficacy and safety of Vega Cobra 120 were evaluated in 21 randomized double-blind placebo-controlled studies lasting up to 6 months in 3000 patients from 19 to 87 years with erectile dysfunction of different etiology (organic, psychogenic or mixed). The efficacy of the drug was evaluated globally using an erection diary, an international erectile function index (validated questionnaire on the state of sexual function) and a partner survey.

The effectiveness of Sildenafil Vega Extra 130 Mg Cobra, defined as the ability to achieve and maintain an erection sufficient for satisfactory sexual intercourse, has been demonstrated in all studies and confirmed in long-term studies lasting 1 year. In studies with the use of fixed-dose proportion of patients reporting that treatment improved their erections were 62% (dose of Cobra Vega Extra 25 mg), 74% (dose Cobra 120 Vega Extra 50 mg) and 82% (dose Sildenafil Vega Extra 130 Mg Cobra 100 mg) compared to 25% in the placebo group. Analysis of the international index of erectile function showed that in addition to improving erection treatment Vega Visa also increased the quality of orgasm, allowing to achieve satisfaction from sexual intercourse and overall satisfaction.

According to the generalized data, 59% of patients with diabetes, 43% of patients who underwent radical prostatectomy and 83% of patients with spinal cord injuries (against 16, 15 and 12% in the placebo group, respectively) were reported to have improved erection in the treatment of Cobra Vega 120 Mg.

Pharmacokinetics

Dosage and administration

Inside, can be taken with or without water. When taking the drug, you should put a tablet, dispersed in the oral cavity, on the tongue, after which it will quickly dissolve, and it can be swallowed. The tablet should be taken immediately after opening the blister. Patients who are recommended a dose of Sildenafil Vega Extra 130 Mg Cobra 100 mg, the second tablet of Sildenafil Tablets Vega Extra Cobra 50 mg should be taken after complete dissolution of the first tablet.

The recommended dose for most adult patients is 50 mg approximately 1 hour before sexual activity. Taking into account the effectiveness and tolerability of the dose can be increased to 100 mg or reduced to 25 mg (only tablets coated with a film, the appropriate dosage). The maximum recommended dose is 100 mg. Patients who are recommended a dose of Vega Cobra 120 100 mg, it is necessary to take 2 table., dispersible in the oral cavity, dosage 50 mg consecutively one after another. The maximum recommended frequency of use — 1 time per day. It should be borne in mind that the absorption of Vega Extra 120 Mg significantly slows down when used in combination with fatty foods.

Special patient groups

Renal impairment. In mild to moderate renal failure dose adjustment is not required, in severe renal failure (Creatinine CL <30 ml/min) Vegah Extra 120 Indication dose should be reduced to 25 mg.

Hepatic impairment. Since the excretion of Sildenafil Vega Extra 130 Mg Cobra is disturbed in patients with liver damage (in particular, cirrhosis), the dose of Cobra Vega 120 Mg should be reduced to 25 mg.

Joint application with other drugs. Joint use with ritonavir is not recommended. In any case, the maximum dose of Sildenafil Vega Extra 130 Mg Cobra under any circumstances should not exceed 25 mg, and the frequency of application — 1 time in 48 h (see "Interaction").

When combined with inhibitors of CYP3A4 isoenzyme (erythromycin, saquinavir, ketoconazole, Itraconazole), the initial dose of Cobra 120 Vega Extra should be 25 mg (see "Interaction").

To minimize the risk of postural hypotension in patients taking α-blockers, Sildenafil Vega Extra 130 Mg Cobra should be started only after achieving hemodynamic stabilization in these patients. Consideration should also be given to reducing the initial dose of Sildenafil Vega Extra 130 Mg Cobra (see special instructions and Interactions).

Old age. Adjustment of the dose of Sildenafil Vega Extra 130 is not required.



Sildenafil Tablets Vegah Extra Cobra

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