The first phase of this study is to determine the optimal dose of sildenafil (Viagra) for men who are currently using Viagra. The objective of this study is to determine the effect of sildenafil (Viagra) on sexual activity in men with erectile dysfunction (ED) at baseline and follow-up visits.
Design
This was a prospective, randomized, double-blinded, placebo-controlled, study of 2 groups (Group 1: 1 drop in placebo; Group 2: 2 tablets of sildenafil; each subject was placed on a tadalafil (Viagra) pill once daily) during the first month of treatment with sildenafil (Viagra) or placebo (sildenafil) for 7 days. Patients were instructed to have sexual activity at least 4 h in the morning and 2 h in the evening for 1 day.
For this study, the primary objective was to determine the effect of sildenafil (Viagra) on sexual activity in men with ED at baseline and follow-up visits. The primary secondary objective was to determine the effect of sildenafil (Viagra) on sexual activity in men with ED at baseline and follow-up visits. The secondary objective was to determine the effect of sildenafil (Viagra) on sexual activity in men with ED at baseline and follow-up visits.
The study protocol was approved by the Institutional Review Board of the University of Toronto. Patients who provided informed consent to the study and completed the study were recruited from 1 of 2 participating Canadian pharmacies. After the first month of sildenafil treatment, patients were randomly assigned to receive either 25 mg sildenafil, 20 mg sildenafil, or 25 mg sildenafil tablets in the 1-mg dose. In a crossover design, sildenafil (25 mg) was administered on the first day of sildenafil treatment (sildenafil 25 mg, 50 mg, or 100 mg) or placebo (sildenafil 25 mg, 50 mg, or 100 mg). Patients in the sildenafil and placebo groups received sildenafil 25 mg or 50 mg orally once daily. Patients were also instructed to receive sildenafil 25 mg (or 50 mg orally once daily) after each day and receive sildenafil 50 mg (or 100 mg orally once daily) after each day. The primary endpoints were the change in sexual activity, measured at 1, 2, and 4 weeks following treatment. The secondary endpoints were the change in sexual activity, measured at the same time point.
The study protocol was approved by the University of Toronto Institutional Review Board. All patients gave their informed consent prior to the beginning of the study. The protocol was also reviewed by the Institute for Clinical Research Ethics Committee at the University of Toronto and was approved by the University of Toronto Institutional Review Board.
Patients were asked to complete a baseline questionnaire and completed the erectile dysfunction questionnaire at baseline and follow-up visits. During the 1-mg dose, sildenafil (Viagra) was taken orally once daily for 4 days, and the dose of sildenafil (Viagra) was changed as needed. After sildenafil (Viagra) treatment, the dose of sildenafil (Viagra) was increased by 1.2 mg/day or decreased by 0.6 mg/day. The dose of sildenafil (Viagra) was changed as needed for 4 days, and the dose of sildenafil (Viagra) was decreased by 0.5 mg/day. The duration of the treatment with sildenafil 25 mg was 1, 2, 3, 4, and 6 weeks, and the duration of the treatment with sildenafil 50 mg was 2, 3, and 6 weeks.
The mean change in sexual activity was calculated for each of the 2 groups and was analyzed using the t statistics. Mean change in the sexual activity domain was calculated by dividing the number of sexual events during the 1-mg dose by the number of sexual events during the 1-mg dose. The t-test was used to determine the difference between the two groups, with one-sidedp<.05.
The protocol was also reviewed by the Institutional Review Board of the University of Toronto.
The study was designed to be a double-blinded, randomized, multicenter study of 2 groups.
Viagra has been shown to cause some mild side effects. Talk to your health care provider if these do not go away within a few days. If you begin to experience more serious reactions, seek medical attention immediately.
Common side effects reported from Viagra use include:
More severe side effects include:
If you experience any of these side effects, seek medical attention immediately. These are symptoms of a severe adverse reaction to this medication that require immediate treatment.
As with all prescription medications, inform your doctor of any medical conditions you currently manage. Tell them about any and all medications, prescription drugs, and supplements you are taking before starting treatment with Viagra. Viagra can interact with bodily substances, causing potentially serious adverse reactions.
Specifically, you should inform your health care provider of any nitrate medication you are taking. Remember to mention any herbal products you use, especially St. John’s wort.
In addition, let your doctor know if you have recently had heart surgery or experience chest pain during sex. If you experience any changes in your heartbeat or chest pain during sex, contact your health care provider immediately.
aspbuilding.IMPORTANT NOTICE: Please be aware, prior to sale, you are advised to have a short phone call consultation with our Pharmacist. Automatic purchase consents the Pharmacist to give you a quick call.
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Please read instructions carefully provided.
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Sildenafil Citrate 50 mg Tablets: This tablet is specifically formulated to treat the symptoms of erectile disfunction and is highly effective in treating it, the most common sexual disorder affecting men over the age of 40 years. Provides a solution to erectile dysfunction in men who suffer from impotence due to conditions such as heart disease or diabetes, or who have problems with their physical or mental health.
Viagra Connect ensures fast and effective results that last as long as 36 hours and come without side effects. It works by relaxing the blood vessels in the penis, allowing blood to flow into the phallus when you get sexually excited and causing the desired stiffness.
Side effects are rare and may include headache, indigestion, flushing, nasal congestion, indigestion, a build-up of mild to moderate fungal or allergic reaction, nausea, sweating, and a rapid heartbeat. Only for adult use, men 18 years and older.The information provided here is not a substitute for professional medical advice, diagnosis, or treatment.aird care will only proceed in the case of injuries or side effects that may arise from the use of this website.
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