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Information

Contraindications

hypersensitivity to Viagra Bitcoin Pharmacy Online or any other component of the drug;

application in patients receiving constantly or intermittently nitric oxide donators, organic nitrates or nitrites in any form, as Viagra Bitcoin Pharmacy Online enhances the hypotensive effect of nitrates (see "Interaction»);

the combined use of inhibitors of PDE5, including Buy Viagra With Bitcoin, called guanylate cyclase stimulants such as riociguat, because it can lead to symptomatic hypotension;

concomitant use with other agents for the treatment of erectile dysfunction (safety and efficacy of Viagra Bitcoin Pharmacy Online when used together has not been studied (see. "Special instructions»);

lactose intolerance, lactase deficiency, glucose-papacosma malabsorption;

severe liver failure (class C classification for child-Pugh);

simultaneous administration of ritonavir;

severe cardiovascular diseases (severe heart failure, unstable angina, stroke or myocardial infarction during the last 6 months, life-threatening arrhythmias, hypertension (BP >170/100 mm Hg). art.) or hypotension (blood PRESSURE <90/50 mm Hg.art.) (see "Special instructions»);

patients with episodes of development partizanai anterior ischemic optic neuropathies (NESN) with loss of vision in one eye;

hereditary retinitis pigmentosa (see special instructions»);

according to the registered indication is not intended for use in women;

according to the registered indication is not intended for use in children under 18 years.

With caution: anatomic deformity of the penis (angulation, cavernous fibrosis or Peyronie's disease) (see "Special instructions"); diseases of, predisposing to the development of priapism (sickle-cell anemia, multiple myeloma, leukemia, thrombocythemia) (see "Special instructions"); diseases accompanied by haemorrhage; ulcer disease of stomach and duodenum in the acute phase; liver dysfunction; severe renal insufficiency (Cl creatinine <30 ml/min); patients with an episode of partizanai development of the anterior ischemic optic neuropathies in history (see "Special instructions); simultaneous reception of blockers α-adrenergic receptors.

Use during pregnancy and breast-feeding

According to the registered indication, the drug is not intended for use in women.

The pharmacokinetics of Viagra Bitcoin Pharmacy Online in the recommended dose range is linear.

Suction. After intake of Viagra Bitcoin Pharmacy Online is rapidly absorbed. Absolute bioavailability averages about 40% (25 to 63%). In vitro Viagra Bitcoin Pharmacy Online at a concentration of about 1.7 ng/ml (3.5 nm) inhibits the activity of PDE-5 50%. After a single dose of Viagra Bitcoin Pharmacy Online 100 mg average Cmax free Viagra Bitcoin Pharmacy Online in plasma men is about 18 ng/ml (38 nm). Cmax when taking Viagra Bitcoin Pharmacy Online 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 Viagra Bitcoin Pharmacy Online is 105 l. the Association of Viagra Bitcoin Pharmacy Online 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 Viagra Bitcoin Pharmacy Online (an average of 188 ng) was found in sperm 90 minutes after taking the drug.

Metabolism. Viagra Bitcoin Pharmacy Online 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 Viagra Bitcoin Pharmacy Online, undergoes further metabolism. The selectivity of this metabolite against PDE is comparable to that of Buy Female Viagra With Bitcoin, and its activity against PDE-5 in vitro is about 50% of the activity of Buy Kamagra With Bitcoin. The concentration of the metabolite in the blood plasma of healthy volunteers was about 40% of the concentration of Discount Red Viagra With Bitcoin. N-demethyl metabolite undergoes further metabolism; its T1/2 is about 4 no.

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

Clinical data

Cardiac studies. The use of Viagra Bitcoin Pharmacy Online 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 Viagra Bitcoin Pharmacy Online 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 Viagra Bitcoin Pharmacy Online 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 Bitcoin Pharmacy Online 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 Viagra Bitcoin Pharmacy Online 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 Viagra Bitcoin Pharmacy Online (up to 100 mg) in men (n=568) with erectile dysfunction and hypertension, taking more than two antihypertensive drugs, was studied. Buy Kamagra Bitcoin 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 Viagra Bitcoin Pharmacy Online 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. Viagra Bitcoin Pharmacy Online had no effect on visual acuity, contrast perception, electroretinogram, IOP or pupil diameter.

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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 Viagra Bitcoin Pharmacy Online. 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 Viagra Bitcoin Pharmacy Online, consult a doctor immediately.

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Viagra Bitcoin Pharmacy Online enhances the antiplatelet effect of sodium nitroprusside, a nitric oxide donator, on human platelets in vitro. Data on the safety of Viagra Bitcoin Pharmacy Online in patients with a tendency to bleeding or exacerbation of gastric ulcer and duodenal ulcer are not available, so the drug Pay For Sildenafil With Bitcoin 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 (Viagra Bitcoin Pharmacy Online — 12.9%, placebo — 0%) than in patients with primary pulmonary arterial hypertension (The Purchase Of Extra Super Viagra — 3%, placebo — 2.4%). Patients receiving Viagra Bitcoin Pharmacy Online 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 Viagra Bitcoin Pharmacy Online together with other PDE-5 inhibitors or other drugs for the treatment of pulmonary hypertension containing Viagra Bitcoin Pharmacy Online (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 Viagra Bitcoin Pharmacy Online any negative effect on the ability to drive a car or other means was not observed. However, since when taking Viagra Bitcoin Pharmacy Online 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.

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