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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 Vega Extra Strong 120 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 Strong 120 by 182%.

Vega Extra Cobra® (Signature)

Vega Extra Cobra (Sildenafil citrate) 120 mg

Vega Extra Cobra
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

Influence of Vega Extra Strong 120 on other drugs

Vega Extra Strong 120 is a weak inhibitor of cytochrome P450 — 1A2, 2C9, 2C19, 2D6, 2E1 and 3A4 ISOENZYMES (IC50 >150 µmol). When taking Vegah Extra 120 Indication in recommended doses, its Cmax is about 1 µmol, so it is unlikely that Vegah Extra 120 Mg can affect the clearance of the substrates of these isoenzymes.

Vega Extra Strong 120 increases the hypotensive effect of nitrates both with long-term use of the latter, and with their appointment for urgent indications. In this regard, the use of Vega Extra Strong 120 in combination with nitrates or nitric oxide donators is contraindicated. While taking α-adrenoblocker doxazosin (4 and 8 mg) and Vega Extra Strong 120 (25, 50 and 100 mg) in patients with benign prostate hyperplasia with stable hemodynamics, the average additional decrease in sad/dad in the supine position was 7/7, 9/5 and 8/4 mm Hg.article, respectively, while in the standing position — 6/6, 11/4 mmHg, and 4/5.art. respectively. Reported rare cases of symptomatic postural hypotension in such patients, manifested in the form of dizziness (without fainting). In some sensitive patients receiving α-blockers, simultaneous use of Cobra Vega Extra Strong 120 Mg can lead to symptomatic hypotension.

There were no signs of significant interaction with tolbutamide (250 mg) or warfarin (40 mg), which are metabolized by CYP2C9 isoenzyme.

Vega Extra (100 mg) has no effect on the pharmacokinetics of the HIV protease inhibitor, saquinavir, which is a substrate of CYP3A4 isoenzyme, at its constant level in the blood.

The simultaneous use of Vegab Extra at equilibrium (80 mg 3 times a day) leads to an increase in the AUC and Cmax of bosentan (125 mg 2 times a day) by 49.8 and 42%, respectively.

Vega Extra 120 (50 mg) does not cause an additional increase in bleeding time when taking acetylsalicylic acid (150 mg).

Vega Extra Strong 120 (50 mg) does not increase the hypotensive effect of alcohol in healthy volunteers with Cmax of alcohol in the blood on average 0.08‰ (80 mg/DL).

In patients with hypertension, no signs of interaction of Vegah Extra 130 (100 mg) with amlodipine were found. The average additional reduction in blood PRESSURE in the supine position is 8 mm Hg.V. (systolic) and 7 mm Hg.V. (diastolic).

The use of Vega Visa in combination with antihypertensive agents does not lead to additional side effects.

Side effect

The most common side effects were headache and tides.

Usually the side effects of Vega Extra Strong 120 are mild or moderate and are transient.

Studies using a fixed dose have shown that the frequency of some adverse events increases with increasing dose.

The frequency of adverse reactions is presented in the following classification: very often — ≥10%; often — ≥1% and <10%; infrequently — ≥0.1% and <1%; rarely — ≥0.01% and <0.1%; very rarely — <0.01%; frequency unknown — cannot be determined based on available data.

Co side of the immune system: infrequently — hypersensitivity reactions (including skin rash), allergic reactions.

On the part of the organ of vision: often — blurred vision, blurred vision, cyanopsia; rarely, eye pain, photophobia, photopsia, chromatopsia, eye redness/injection of the sclera, changing the brightness of cvetovete, mydriasis, conjunctivitis, hemorrhage in the tissue of the eye, cataract, a disorder of the lacrimal apparatus; rarely — swelling of the eyelids and adjacent tissues, a feeling of dryness in the eyes, the presence of iridescent circles in the field of view around the light source, increased fatigue of the eyes, vision of objects in yellow (xanthopsia), vision of objects in red (erythropsia), conjunctival hyperemia, irritation of the mucous membrane of the eyes, unpleasant sensations in the eyes; the frequency is unknown — NPINZN, occlusion of retinal veins, visual field defect, diplopia*, temporary vision loss or decreased visual acuity, increased IHD, edema retina, retinal vascular disease, vitreous detachment/vitreal traction.

On the part of the organ of hearing: infrequent — a sudden decrease or loss of hearing, tinnitus, pain in the ears.

From the CCC: often — tides; infrequently — tachycardia, palpitations, decreased blood PRESSURE, increased heart rate, unstable angina, AV-blockade, myocardial infarction, cerebral thrombosis, cardiac arrest, heart failure, deviations in ECG readings, cardiomyopathy; rarely — atrial fibrillation, sudden cardiac death*, ventricular arrhythmia*.

The blood and lymphatic system: rarely — anemia, leukopenia.

On the part of metabolism and nutrition: infrequently — a feeling of thirst, swelling, gout, uncompensated diabetes, hyperglycemia, peripheral edema, hyperuricemia, hypoglycemia, hypernatremia.

From the respiratory system: often — nasal congestion; infrequent — nosebleeds, rhinitis, asthma, dyspnea, laryngitis, pharyngitis, sinusitis, bronchitis, increased volume of sputum, increased cough; rarely — a feeling of tightness in the throat, dryness of the nasal mucosa, swelling of the nasal mucosa.

From the digestive tract: often — nausea, dyspepsia; uncommon — GERD, vomiting, pain in the abdomen, dryness of the mucous membrane of the mouth, glossitis, gingivitis, colitis, dysphagia, gastritis, gastroenteritis, esophagitis, stomatitis, rejection of liver function tests from normal, rectal bleeding; rarely, hypesthesia of the mucous membrane of the oral cavity.

On the part of the musculoskeletal system: often — back pain; infrequently — myalgia, pain in the limbs, arthritis, arthrosis, tendon rupture, tenosynovitis, bone pain, myasthenia gravis, synovitis.

From the genitourinary system: infrequently — cystitis, nicturia, breast enlargement, urinary incontinence, hematuria, ejaculation disorders, genital edema, anorgasmia, hematospermia, damage to the tissues of the penis; rarely — prolonged erection and/or priapism.

From the Central and peripheral nervous system: very often — headache; often — dizziness; infrequently — drowsiness, migraine, ataxia, hypertension, neuralgia, neuropathy, paresthesia, tremor, vertigo, symptoms of depression, insomnia, unusual dreams, increased reflexes, hypesthesia; rarely — convulsions*, repeated convulsions*, fainting.

On the part of the skin and subcutaneous tissues: infrequently — skin rash, urticaria, herpes simplex, itching, sweating, skin ulceration, contact dermatitis, exfoliative dermatitis; the frequency is unknown — Stevens-Johnson syndrome, toxic epidermal necrolysis.

Other: infrequently — a feeling of heat, swelling of the face, photosensitivity reaction, shock, asthenia, fatigue, pain of various localization, chills, accidental falls, chest pain, accidental injuries; rarely — irritability.

Clinical data

In a placebo-controlled cross-examination of patients with proven early age macular degeneration (n=9), Vega Extra Strong 120 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 Vegah Extra 120 Indication 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 Vega Cobra 120, 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 Vega Extra Strong 120 25 mg), 74% (dose Vega Extra 120 50 mg) and 82% (dose Vegah Extra 120 Mg 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 Extra Strong 120 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 Vegah Extra 130.

Pharmacokinetics

Cardiovascular complications

During the post-marketing use of Vega Extra Strong 120 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 Extra Strong 120. 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 Extra Strong 120 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 Vega Extra Strong 120, 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 Strong 120 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 Strong 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 Extra Strong 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 Vega Extra Strong 120

The metabolism of Vega Extra Strong 120 occurs mainly under the action of CYP3A4 isoenzyme (main pathway), so inhibitors of this isoenzyme can reduce the clearance of Vega Extra 120, and inducers, respectively, increase the clearance of Vega Extra Strong 120. A decrease in the clearance of Cobra Vega 120 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 Extra Strong 120 (50 mg) causes an increase in the concentration of Vega Extra Strong 120 in plasma by 56%.

A single dose of 100 mg of Vega Extra Strong 120 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 Strong 120 by 182%.

When co-administered Vega 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 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 Vega Extra Strong 120.

The simultaneous use of Vega Extra Strong 120 (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 Vega Extra Strong 120 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 Vega 120 Mg — 5 ng/ml). This is consistent with the ritonavir effect on a wide range of cytochrome P450 substrates. Vega Extra Strong 120 does not affect the pharmacokinetics of ritonavir. Given these data, the simultaneous reception of ritonavir and Vega Extra Strong 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 Vega Cobra is taken in the recommended doses, patients receiving strong inhibitors of CYP3A4 isoenzyme at the same time, then Cmax free Cobra Vega 120 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 Vegah Extra 120 Mg.

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

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

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.



Vega 120 Mg

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