Sildenafil, Tadalafil, Vardenafil – Which to Choose?
October 3rd, 2011 | 
Author: Sildenafil, Tadalafil, Vardenafil all belong to a new generation of phosphodiesterase type 5 inhibitors and are used for arterial hypertension and erectile dysfunction treatment. Which if them to choose if you suffer from impotence? As far as ED treatment is concerned, all these PDF5 inhibitors are similar in use and dosage, they are absolutely interchangeable, differences lie in the sphere of side-effects and speed of action.
Sildenafil and vardenafil affect PDE6 found in the eye, so blurred vision is a common side-effect of these drugs. If you have problems with eye-sight, choose tadalafil instead. PDE1 is the enzyme found in brain and heart and tadalafil has also a weaker influence on it. If you have problems with heart or are prone to tachycardia, choose tadalafil.
Tadalafil also shows better performance as far as its work and life-span is concerned. It starts to work in 20 min and its effect can lasts for up to 36 hours, while for sildenafil and vardenafil the figures respectively are: 40 min – 4 hours; an hour – 12hours+. Remember that all these drugs lower blood pressure, so consult your doctor if you suffer from hypotension.