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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 Vega 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 Vega 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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Vega Extra Cobra
Sildenafil citrate
120 mg × 10 pills
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Information

Clinical data

Cardiac studies. The use of Sildenafil Tablets Vegah Extra Cobra in doses up to 100 mg did not lead to clinically significant ECG changes in healthy volunteers. The maximum decrease in systolic pressure in the supine position after taking Sildenafil Vega Extra 130 Mg at a dose of 100 mg was 8.3 mm Hg.art., and diastolic pressure — 5.3 mm Hg.a More pronounced, but also transient effect on blood PRESSURE was observed in patients taking nitrates (see "Contraindications" and "Interaction").

In a study of the hemodynamic effect of Vega Coin in a single dose of 100 mg in 14 patients with severe coronary artery disease (more than 70% of patients had stenosis of at least one coronary artery), systolic and diastolic resting pressure decreased by 7 and 6%, respectively, and pulmonary systolic pressure decreased by 9%. Sildenafil Vega Extra 130 Mg did not affect cardiac output and did not interfere with blood flow in stenotic coronary arteries, and also led to an increase (by about 13%) of adenosine-induced coronary flow in both stenotic and intact coronary arteries. In a double-blind placebo-controlled study of 144 patients with erectile dysfunction and stable angina, taking antianginal drugs (except nitrates), exercise was performed until the severity of symptoms of angina increased. The duration of the exercise was significantly longer (19.9 seconds; 0.9–38.9 seconds) in patients taking Vega 120 Mg in a single dose of 100 mg, compared with patients receiving placebo.

In a randomized double-blind placebo-controlled study, the effect of changing the dose of Sildenafil Vega Extra 130 Mg (up to 100 mg) in men (n=568) with erectile dysfunction and hypertension, taking more than two antihypertensive drugs, was studied. Vega Extra Cobra 130 Mg improved erection in 71% of men compared to 18% in the placebo group. The frequency of adverse effects was comparable to that in other groups of patients, as well as in those taking more than three antihypertensive drugs.

Studies of visual impairment. In some patients, 1 h after taking Cobra 120 Vega Extra at a dose of 100 mg with the Farnsworth-Mansell test 100 revealed a slight and transient violation of the ability to distinguish shades of color (blue/green). After 2 hours after taking the drug, these changes were absent. It is believed that color vision impairment is caused by inhibition of PDE-6, which is involved in the process of color transmission in the retina. Sildenafil Vega Extra 130 Mg had no effect on visual acuity, contrast perception, electroretinogram, IOP or pupil diameter.

The pharmacokinetics of Vega Coin in the recommended dose range is linear.

Suction. After intake of Sildenafil Vega Extra 130 Mg is rapidly absorbed. Absolute bioavailability averages about 40% (25 to 63%). In vitro Vegal Extra 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 100 mg average Cmax free Sildenafil Vega Extra 130 Mg in plasma men is about 18 ng/ml (38 nm). Cmax when taking Sildenafil Vega Extra 130 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 Cobra 120 Vega Extra is 105 l. the Association of Sildenafil Vega Extra 130 Mg 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 Vega 120 Mg (an average of 188 ng) was found in sperm 90 minutes after taking the drug.

Metabolism. Vega Extra 120 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 Sildenafil Vega Extra 130 Mg, undergoes further metabolism. The selectivity of this metabolite against PDE is comparable to that of Sildenafil Vega Extra 130 Mg, and its activity against PDE-5 in vitro is about 50% of the activity of Sildenafil Vega Extra 130 Mg. The concentration of the metabolite in the blood plasma of healthy volunteers was about 40% of the concentration of Sildenafil Vega Extra 130 Mg. N-demethyl metabolite undergoes further metabolism; its T1/2 is about 4 no.

Breeding. The total clearance of Vegah Extra 130 is 41 l/h, and the final T1/2 — 3-5 h. After oral administration, as well as after I/V, Sildenafil Vega Extra 130 Mg is excreted as metabolites, mainly by the intestine (about 80% oral dose) and to a lesser extent by the kidneys (about 13% oral dose).

Sildenafil Vega Extra 130 Mg 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.

Vega Coin 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 Sildenafil Vega Extra 130 Mg 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. Sildenafil Vega Extra 130 Mg 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 Sildenafil Vega Extra 130 Mg is sexual stimulation.

Sildenafil Vega Extra 130 Mg restores impaired erectile function in conditions of sexual stimulation by increasing blood flow to the cavernous bodies of the penis.

Cardiovascular complications

During the post-marketing use of Sildenafil Vega Extra 130 Mg 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. 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 Vega Pills 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 Cobra Vega 120 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 Vega Extra Cobra 120, 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 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 Vegal Extra

The metabolism of Vega Extra Cobra occurs mainly under the action of CYP3A4 isoenzyme (main pathway), so inhibitors of this isoenzyme can reduce the clearance of Sildenafil Vega Extra 130 Mg, and inducers, respectively, increase the clearance of Sildenafil Vega Extra 130 Mg. A decrease in the clearance of Vegah Extra 130 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 120 Mg (50 mg) causes an increase in the concentration of Sildenafil Vega Extra 130 Mg 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 Extra Cobra 130 Mg by 182%.

When co-administered Sildenafil Vega Extra 130 Mg (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 Cobra 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 Sildenafil Vega Extra 130 Mg.

The simultaneous use of Sildenafil Vega Extra 130 Mg (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 120 by 300% (4 times), a AUC by 1000% (11-fold). After 24 h, the concentration of Sildenafil Vega Extra 130 Mg in blood plasma is about 200 ng/ml (after a single application of one Vega Extra Strong 120 — 5 ng/ml). This is consistent with the ritonavir effect on a wide range of cytochrome P450 substrates. Sildenafil Vega Extra 130 Mg does not affect the pharmacokinetics of ritonavir. Given these data, the simultaneous reception of ritonavir and Sildenafil Tablets Vegah Extra Cobra is not recommended. In any case, the maximum dose of Sildenafil Vega Extra 130 Mg under any circumstances should not exceed 25 mg for 48 hours. If Vegal Extra 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 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 Vega Cobra 120.

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 in Css (80 mg 3 times a day) showed a decrease in AUC and Cmax Vega 120 Mg by 62.6 and 52.4%, respectively. Vegah Extra 120 Mg 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 with powerful inducers of CYP3A4 isoenzyme, such as rifampicin, can lead to a greater decrease in the concentration of Sildenafil Vega Extra 130 Mg 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.

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



Cobra Vega

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You won't regret it. It really saves me time and effort. Vega-extra is exactly what our business has been lacking.Rating:87 out of100, 71Vega-extraVega-extra is worth much more than I paid.Rating:96 out of100, 71Vega-extraDude, your stuff is the bomb! Vega-extra was worth a fortune to my company.Rating:95 out of100, 71Vega-extraI didn't even need training. Vega-extra is awesome! I wish I would have thought of it first. Thanks guys, keep up the good work!Rating:84 out of100, 71Vega-extraIt's really wonderful.Rating:87 out of100, 71Vega-extraIt really saves me time and effort. Vega-extra is exactly what our business has been lacking. Thanks for the great service. I have gotten at least 50 times the value from Vega-extra. Absolutely wonderful!Rating:86 out of100, 71Vega-extraGreat job, I will definitely be ordering again! Wow what great service, I love it! We're loving it. 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