Take the Impotence (ED) Quiz, impotence (ED) Slideshow Pictures, unzip Your Sex Life. Drug Description, find Lowest Prices on, viagra ( sildenafil citrate ) Tablets. Description, viagra ( sildenafil citrate an oral therapy for erectile dysfunction, is the citrate salt of sildenafil, a selective inhibitor of cyclic guanosine monophosphate (cGMP)-specific phosphodiesterase type 5 (PDE5). Sildenafil citrate is designated chemically as citrate and has the following sildenafil structural formula: Sildenafil citrate is a white to off-white crystalline powder with a solubility.5 mg/mL in water and a molecular weight of 666.7. Viagra is formulated as blue, film-coated rounded-diamond-shaped tablets equivalent to 25 mg, 50 mg and 100 mg of sildenafil for oral administration. In addition to the active ingredient, sildenafil citrate, each tablet contains the following inactive ingredients: microcrystalline cellulose, anhydrous dibasic calcium phosphate, croscarmellose sodium, magnesium stearate, hypromellose, titanium dioxide, lactose, triacetin, and FD C Blue #2 aluminum lake. What are the possible side effects of oral sildenafil (Revatio, Viagra)? Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or sildenafil citrate 100mg throat. During sexual activity, if you become dizzy or nauseated, or have pain, numbness, or tingling in your chest, arms, neck, or jaw, stop and call your doctor right away. You could be having a serious side effect of sildenafil. Stop using sildenafil and call your doctor at once if you have a serious side effect such as: sudden vision loss; ringing in your ears, or sudden hearing. Read All Potential Side Effects and See Pictures of Viagra indications Dosage, indications viagra is indicated for the treatment of erectile dysfunction. Dosage AND administration Dosage Information For most patients, the recommended dose is 50 mg taken, as needed, approximately 1 hour before sexual activity. However, viagra may be taken anywhere from 30 minutes to 4 hours before sexual activity. The maximum recommended dosing frequency is once per day. Based on effectiveness and toleration, the dose may be increased to a maximum recommended dose of 100 mg or decreased to. Use With Food viagra may be taken with or without food. Dosage Adjustments In Specific Situations viagra was shown to potentiate the hypotensive effects of nitrates and its administration in patients who use nitric oxide donors such as organic nitrates or organic nitrites in any form is therefore contraindicated see contraindications, drug buy sildenafil interactions, and clinical pharmacology. When viagra is co-administered with an alpha-blocker, patients should be stable on alpha-blocker therapy prior to initiating viagra treatment and viagra should be initiated at 25 mg see warnings AND precautions, drug interactions, and clinical pharmacology. Dosage Adjustments Due To Drug Interactions Ritonavir The recommended dose for ritonavir-treated patients is 25 mg prior to sexual activity and the recommended maximum dose is 25 mg within a 48 hour period because concomitant administration increased the blood levels of sildenafil by 11-fold see. CYP3A4 Inhibitors Consider a starting dose of 25 mg in patients treated with strong CYP3A4 inhibitors (e.g., ketoconazole, itraconazole, or saquinavir) or erythromycin. Clinical data have shown that co-administration with saquinavir or erythromycin increased plasma levels of sildenafil by about 3 fold see drug interactions and clinical pharmacology. Dosage Adjustments In Special Populations Consider a starting dose of 25 mg in patients 65 years, patients with hepatic impairment (e.g., cirrhosis and patients with severe renal impairment (creatinine clearance 30 mL/minute) sildenafil vs viagra because administration of viagra in these patients resulted in higher plasma levels. HOW supplied Dosage Forms And Strengths viagra is supplied as blue, film-coated, rounded-diamond-shaped tablets containing sildenafil citrate equivalent to 25 mg, 50 mg, or 100 mg of sildenafil. Tablets are debossed with pfizer on one sildenafil citrate 100mg side and VGR25, VGR50 or VGR100 on the other to indicate the dosage strengths. Storage And Handling viagra ( sildenafil citrate ) is supplied as blue, film-coated, rounded-diamond-shaped tablets containing sildenafil citrate equivalent to the nominally indicated amount of sildenafil and debossed on the obverse and reverse sides as follows: 25 mg 50 mg 100 mg Obverse VGR25 VGR50. Distributed by: Pfizer Labs, Division of Pfizer Inc., NY, NY 10017. Revised: Sep 2015 Side Effects Drug Interactions side effects The following are discussed in more detail in other sections of the labeling: Cardiovascular see warnings AND precautions Prolonged Erection and Priapism see warnings AND precautions Effects on the Eye see warnings AND precautions Hearing Loss. Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in clinical. Viagra was administered to over 3700 patients (aged 19-87 years) during pre-marketing clinical trials worldwide. Over 550 patients were treated for longer than one year. In placebo-controlled clinical studies, the discontinuation rate due to adverse reactions for viagra (2.5) was not significantly different from placebo (2.3). In fixed-dose studies, the incidence of some adverse reactions increased with dose. The type of adverse reactions in flexible-dose studies, which reflect the recommended dosage regimen, was similar to that for fixed-dose studies. At doses above the recommended dose range, adverse reactions were similar to those detailed in Table 1 below but generally were reported more frequently. Table 1: Adverse Reactions Reported by 2 of Patients Treated sildenafil citrate wiki with viagra and More Frequent than Placebo in Fixed-Dose Phase II/III Studies Adverse Reaction 25 mg (n312) 50 mg (n511) sildenafil generic 100 mg (n506) Placebo (n607) Headache Flushing Dyspepsia Abnormal vision Nasal congestion 4. When viagra was taken as recommended (on sildenafil citrate 100mg an as-needed basis) in flexible-dose, placebo-controlled clinical trials of two to twenty-six weeks duration, patients took viagra at least sildenafil citrate 100mg once weekly, and the following adverse reactions were reported: Table 2: Adverse Reactions Reported by 2 of Patients Treated. In these studies, only one patient discontinued due to abnormal vision. The following events occurred in 2 of patients in controlled clinical trials; a causal relationship to viagra is uncertain. Reported events include those with a plausible relation to drug use; omitted are minor events and reports too imprecise to be meaningful: Body as a Whole: face edema, photosensitivity reaction, shock, asthenia, pain, chills, accidental fall, abdominal pain, allergic reaction, chest pain, accidental injury.
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Note: These highlights do not include all the where can i buy sildenafil tablets information needed to use viagra where can i buy sildenafil tablets safely and effectively. Dosage forms AND strengths: Viagra is made in 25 mg, 50 mg, 100. Doses AND administration: When Taken As Needed: The starting dose is usually 50 mg as needed approximately 1 hour prior to sexual activity, but it depends on the individual. Based on effectiveness and tolerability, your physician may recommend an increase to 100 sildenafil online mg or where can i buy sildenafil tablets a decrease to. Viagra should where can i buy sildenafil tablets not to be taken more where can i buy sildenafil tablets than once per day. Absorption, viagra has been shown to take effect in as little as 30 minutes. The median time is 1 hour. Viagra is rapidly absorbed. Maximum observed plasma concentrations are reached within 30 to 120 minutes (median 60 minutes) of oral dosing in the fasted state. This differs based on patient population (e.g., Geriatrics). For more information, please read the FDA Prescribing Information here. Contraindications: Use of viagra in any patient using any form of organic nitric oxide donors, such as organic nitrates or where can i buy sildenafil tablets organic nitrites in any form, is contraindicated. Viagra was shown to potentiate the hypotensive effect of nitrates. Simply put, both nitrates and Viagra can lower your blood pressure so the combination of the two can be extremely dangerous. Also, known hypersensitivity to sildenafil or any component of the viagra tablet is contraindicated. Adverse reactions: Most Common (2 Include: headache, flushing, dyspepsia, abnormal vision, nasal congestion, back pain, myalgia (i.e., muscle pain nausea, dizziness and rash. Less Common: For a complete list of less common side effects, please read the FDA information here. To report suspected adverse reactions, contact Pfizer at or FDA at 1-800-FDA-1088 or www. Warnings AND precautions, patients should not use viagra if sexual activity is inadvisable due to cardiovascular status. Patients should seek emergency treatment if an erection lasts 4 hours. Physicians should use viagra with caution in patients predisposed to priapism. Patients should stop viagra and seek medical care where can i buy sildenafil tablets if a sudden loss of vision occurs in one or both eyes, which could be a sign of non arteritic anterior ischemic optic neuropathy (naion). Viagra should be used with caution, and only when the anticipated benefits outweigh the risks, in patients with a history of naion. Patients with a crowded optic disc may also be at an increased risk of naion. Patients should stop viagra and seek prompt medical attention in the event of sudden decrease or loss of hearing. Caution is advised when viagra is co-administered with alpha-blockers or anti-hypertensives. Concomitant use may lead sildenafil online to hypotension. Decreased blood pressure, syncope, and prolonged erection may occur at higher sildenafil exposures. In patients taking strong CYP inhibitors, such as ritonavir, sildenafil exposure is increased. Decrease where can i buy sildenafil tablets in viagra dosage is recommended. Drug interactions, viagra can potentiate the hypotensive effects of nitrates, alpha blockers, and anti-hypertensives. With concomitant use of alpha blockers, initiate viagra at 25 mg dose. CYP3A4 inhibitors (e.g., ritonavir, ketoconazole, itraconazole, erythromycin) increase viagra exposure. Ritonavir: Do not exceed a maximum single dose of 25 mg in a 48 hour period.
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