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Let’s take a look at how to take Viagra to get the best results. All PDE5 inhibitors are about 70% effective at helping people have better erections. That means seven out of 10 people who take these drugs as prescribed will have more frequent or longer-lasting erections.
But if you don’t get an erection within 4 hours after taking a dose, Viagra didn’t work for you this time. This dosage may be too high for people who have certain medical conditions or take certain medications. So it’s important not to take more Viagra than your doctor prescribes for you. Physicians should discuss with patients the potential cardiac risk of sexual activity in patients with preexisting cardiovascular risk factors. Sildenafil enhances the effect of NO by inhibiting phosphodiesterase type 5 (PDE5), which is responsible for degradation of cGMP in the corpus cavernosum. Sildenafil has no direct relaxant effect on isolated human corpus cavernosum.
Certain drugs used to treat benign prostatic hyperplasia (BPH) can also cause low blood pressure. Viagra contains the drug sildenafil, while Levitra contains the drug vardenafil. Both Viagra and Levitra belong to a group of drugs called phosphodiesterase type 5 (PDE5) inhibitors.
Therefore sexual stimulation is required in order for sildenafil to produce its intended beneficial pharmacological effects. The physiological mechanism responsible for erection of the penis involves the release of nitric oxide (NO) in the corpus cavernosum during sexual stimulation. In single dose volunteer studies of doses up to 800 mg, adverse reactions were similar to those seen at lower doses, but the incidence rates and severities were increased.
More research is needed to know for sure whether or not Viagra is effective for treating PE. However, Viagra may be less effective at treating erectile dysfunction (ED) in people who have had their prostate removed than it is in people who haven’t. The safety and effectiveness of taking Viagra through the nose hasn’t been tested. But even if your erection goes away after you’ve ejaculated, Viagra can help you to get another erection up to 4 hours after you’ve taken a dose.
Using more than one at the same time will not make treatment more effective, and risks overdose and unwanted side effects. Leave a gap between using one type of treatment and another of at least 24 hours. In the rare event of serious side effects seek immediate medical advice (telephone NHS 111 in the UK).
You should read the patient information leaflet supplied with your medication, for a full list of ingredients. If the 50mg tablets are not working well for you, your doctor or pharmacist may increase the dose to 100mg. Your doctor or pharmacist may also suggest that you try sildenafil 25mg tablets if you are experiencing side effects with the 50mg tablets. Very common &