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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 Cobra 120 Vega Extra 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 Cobra 120 Vega Extra by 182%.

Vega Extra Cobra® (Signature)

Vega Extra Cobra (Sildenafil citrate) 120 mg

Vega Extra Cobra
Sildenafil citrate
120 mg × 180 pills
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Sildenafil citrate
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Sildenafil citrate
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Sildenafil citrate
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Sildenafil citrate
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Sildenafil citrate
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Information

Cardiovascular complications

During the post-marketing use of Cobra 120 Vega Extra 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 Vega Cobra 120 Mg. 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 Cobra 120 Vega Extra 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 Sildenafil Vega Extra 130 Mg, 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 Vega Extra Cobra 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 Cobra 120 Vega Extra, in such patients should be used with caution and only in situations where the expected benefit outweighs the risk.

When using the drug Vega Visa 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 Extra Vega

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

Cimetidine (800 mg), a nonspecific inhibitor of CYP3A4 isoenzyme, when taken together with Vega Pills (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 Cobra Vega 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 Vega Visa by 182%.

When co-administered Cobra 120 Vega Extra (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 Strong 120 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 Cobra 120 Vega Extra.

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

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 Cobra 120 Vega Extra in Css (80 mg 3 times a day) showed a decrease in AUC and Cmax Cobra 120 Vega Extra by 62.6 and 52.4%, respectively. Vega Extra increased the AUC and Cmax of bosentan by 49.8 and 42%, respectively.

It is assumed that the simultaneous use of Cobra Vega 120 with powerful inducers of CYP3A4 isoenzyme, such as rifampicin, can lead to a greater decrease in the concentration of Cobra 120 Vega Extra 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 Vega Pills.

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

Hearing impairment

Some post-marketing and clinical studies have reported cases of sudden hearing loss or impairment associated with the use of all PDE-5 inhibitors, including Signature Cobra Vega. Most of these patients had risk factors for sudden impairment or hearing loss. There is no causal relationship between the use of PDE-5 inhibitors and sudden hearing impairment or hearing loss. In case of sudden hearing impairment or hearing loss while taking Vegal Extra, consult a doctor immediately.

Bleedings

Cobra 120 Vega Extra enhances the antiplatelet effect of sodium nitroprusside, a nitric oxide donator, on human platelets in vitro. Data on the safety of Cobra 120 Vega Extra in patients with a tendency to bleeding or exacerbation of gastric ulcer and duodenal ulcer are not available, so the drug Cobra Vega Extra Strong 120 Mg in these patients should be used with caution (see With caution).

The incidence of nosebleeds in patients with pulmonary hypertension associated with diffuse connective tissue diseases was higher (Vega Visa — 12.9%, placebo — 0%) than in patients with primary pulmonary arterial hypertension (Vega Extra 120 Mg — 3%, placebo — 2.4%). Patients receiving Sildenafil Tablets Vegah Extra Cobra in combination with an antagonist of vitamin K, the frequency of nasal bleeding was higher (8.8 percent) than patients who were not taking an antagonist of vitamin K (1.7 percent).

Use in conjunction with other means for the treatment of erectile dysfunction

The safety and efficacy of Cobra 120 Vega Extra together with other PDE-5 inhibitors or other drugs for the treatment of pulmonary hypertension containing Sildenafil Vega Extra 130 Mg Cobra (eg, Revatsio®), or other means for the treatment of erection disorders have not been studied, so the use of such combinations is not recommended (see "Contraindications").

Influence on the ability to drive and mechanisms. In patients receiving Cobra 120 Vega Extra any negative effect on the ability to drive a car or other means was not observed. However, since when taking Cobra 120 Vega Extra may develop dizziness, lowering blood PRESSURE, the development of chromatopsia, blurred vision, etc. side effects, care should be taken when driving and doing other potentially dangerous activities that require increased concentration and speed of psychomotor reactions. Also, you should be careful about the individual action of the drug in these situations, especially at the beginning of treatment and when changing the dosage regimen.

Cobra 120 Vega Extra is a potent selective inhibitor of cGMP-specific PDE-5.



Mechanism of action

The implementation of the physiological mechanism of erection is associated with the release of nitric oxide (NO) in the cavernous body during sexual stimulation. This, in turn, leads to an increase in the level of cGMP, the subsequent relaxation of smooth muscle tissue of the cavernous body and an increase in blood flow.

Vegah Cobra does not have a direct relaxing effect on the isolated cavernous human body, but enhances the effect of nitric oxide by inhibiting PDE-5, which is responsible for the disintegration of cGMP.

Selective Vegah Extra 130 against PDE5 in vitro, its activity against PDE5 superior activity against other known PDE isoenzymes: PDE-6 — 10 times; PDE-1 more than 80 times; PDE-2, PDE-4, PDE-7 PDE–11 more than 700 times. Cobra 120 Vega Extra is 4000 times more selective for PDE-5 than PDE-3, which is crucial because PDE-3 is one of the key enzymes in the regulation of myocardial contractility.

A prerequisite for the effectiveness of Cobra 120 Vega Extra is sexual stimulation.

Vegah Cobra restores impaired erectile function in conditions of sexual stimulation by increasing blood flow to the cavernous bodies of the penis.

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 Cobra 120 Vega Extra 100 mg, the second tablet of Vega Visa 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 Cobra 120 Vega Extra 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 Cobra 120 Vega Extra 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) Vega Cobra 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 Sildenafil Tablets Vegah Extra Cobra 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 Cobra 120 Vega Extra 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, Cobra Vega 120 should be started only after achieving hemodynamic stabilization in these patients. Consideration should also be given to reducing the initial dose of Cobra Vega Extra Strong 120 Mg (see special instructions and Interactions).

Old age. Adjustment of the dose of Vega Cobra is not required.



Cobra Vega Extra Strong 120 Mg

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