Viagra dosage instructions

Discussion in 'Online Pharmacies Canada' started by tickeras, 29-Aug-2019.

  1. Alex91 Well-Known Member

    Viagra dosage instructions


    (see Recommended Dose and Dose Adjustment, ACTION AND CLINICAL PHARMACOLOGY, WARNINGS AND PRECAUTIONS). VIAGRA (sildenafil citrate) has been shown to potentiate the hypotensive effects of nitrates in healthy volunteers and in patients, and is therefore contraindicated in patients who are taking any type of nitrate drug therapy, or who utilize short-acting nitrate-containing medications, due to the risk of developing potentially life-threatening hypotension. The use of organic nitrates, either regularly and/or intermittently, in any form (e.g. oral, sublingual, transdermal, by inhalation) is absolutely contraindicated (see ACTION AND CLINICAL PHARMACOLOGY, CONTRAINDICATIONS). Since higher plasma levels may increase both efficacy and the incidence of adverse events, a starting dose of 25 mg should be considered in patients, age 65 years or over, on concomitant CYPA4 inhibitors, with severe renal impairment, with hepatic impairment and on ritonavir (see Dosing Considerations above, ACTION AND CLINICAL PHARMACOLOGY, WARNINGS AND PRECAUTIONS). For most patients, the recommended dose of VIAGRA is 50 mg taken as needed. The concomitant use of the potent cytochrome P-450 3A4 inhibitor, ritonavir is associated with a 1000% (11-fold) increase in plasma levels (AUC) of sildenafil. Given the extent of the interaction with patients receiving concomitant therapy with ritonavir, it is recommended not to exceed a maximum single dose of 25 mg of sildenafil in a 48-hour period (see WARNINGS AND PRECAUTIONS). To be taken as needed approximately 30 – 60 minutes before sexual activity. Sildenafil is used to treat male sexual function problems (impotence or erectile dysfunction-ED). In combination with sexual stimulation, sildenafil works by increasing blood flow to the penis to help a man get and keep an erection. This drug does not protect against sexually transmitted diseases (such as HIV, hepatitis B, gonorrhea, syphilis). Consult your doctor or pharmacist for more details. Read the Patient Information Leaflet provided by your pharmacist before you start taking sildenafil and each time you get a refill. If you have any questions, ask your doctor or pharmacist. To treat erectile dysfunction-ED, take this drug by mouth as directed by your doctor, usually as needed. Take sildenafil at least 30 minutes, but no more than 4 hours, before sexual activity (1 hour before is the most effective). A high-fat meal may delay how quickly the drug begins to work.

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    Viagra comes in three different doses of 25mg, 50mg and 100mg. Find out which dosage is right for you and order online. Find patient medical information for Viagra Oral on WebMD including its uses. The dosage is based on your medical condition, response to treatment, and. Dosage And Administration. Dosing Considerations. The following factors are associated with increased plasma levels AUC of sildenafil age 65 years or over.

    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 25 mg. 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 [ 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 [ Consider a starting dose of 25 mg in patients treated with strong CYP3A4 inhibitors (e.g., ketoconazole, itraconazole, or saquinavir) or erythromycin. Special patient instructions comes with sildenafil. Read the directions carefully before you start using sildenafil and each time you get a refill of your medicine. If you are using the oral liquid, shake the bottle well for at least 10 seconds before measuring each dose. Use the oral syringe provided in the package to measure each dose. This medicine usually begins to work for erectile dysfunction within 30 minutes after taking it. It continues to work for up to 4 hours, although its action is usually less after 2 hours. Use only the brand of this medicine that your doctor prescribed. The dose of this medicine will be different for different patients. Follow your doctor's orders or the directions on the label. The following information includes only the average doses of this medicine. If your dose is different, do not change it unless your doctor tells you to do so.

    Viagra dosage instructions

    Sildenafil Oral Route Proper Use - Mayo Clinic, Viagra Oral Uses, Side Effects, Interactions, Pictures, Warnings.

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    NHS medicines information on sildenafil - what it's used for, side effects, dosage and who can take it. Recommandations pour l'utilisation de Viagra pour le traitement de la dysfonction érectile, dosage de Viagra, les effets secondaires du sildénafil. Viagra Sildenafil is used for treating erectile dysfunction ED. It works by. Follow your doctor's instructions when using this medicine.

     
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