Sildenafil Professional Viagra Professional is the "next generation" of Viagra. It is an extra-strength version of the first sildenafil drug to treat erectile dysfunction. It works in essentially the same fashion as the original. The response period of Viagra Professional is considerably shorter than that of Viagra.

If Sildenafil is for erectile dysfunction it is taken as needed before any sexual activity as prescribed by the doctor. The best time to take this drug is an hour before sexual contact and should be taken only once a day. Sildenafil is taken with or without food. Medication will take longer to effect if medication taken together with a high fat meal. If Sildenafil is used to treat pulmonary arterial hypertension, doctor′s prescription should be followed. It is usually taken three times a day with or without food. Take this drug at around the same time every day, and space the doses about 4 to 6 hours apart,. For more detailed information please see label and please consult specialist. Do not take more Sildenafil than it is indicated at the label without consulting your doctor.

Common side effects of Sildenafil are facial flushing, headache, stomach ache, nausea, and diarrhea. More severe effects include sudden hearing loss and dizziness. In rare cases patients suffer painful and prolonged erection that last for 4 hours, immediately stop using the drug and seek medical attention before permanent problems arise.