Viagra vs Cialis vs Levitra – Which is best for you?

How three of them works? Sildenafil is a generic name for Viagra, Tadalafil is a generic name for Cialis, and Vardenafil is a generic name for Levitra . Each of these drugs works in much the same way and comes in a same class of drugs called PDE-5 inhibitors. Sildenafil contains the same active ingredient as Viagra (sildenafil citrate), and works in the same way. However, because it is the generic version of the viagra, rather than the brand, Sildenafil is considerably cheaper. It works within an hour of taking a tablet, and is best taken on an empty stomach. The effects of Viagra will last for four to six hours. The effects of Cialis (tadalafil) last much longer than those for Viagra or Levitra (up to 36 hours) so many men prefer it as involves less planning. The only downside is that if you do experience side effects these can last for longer too. Cialis is not affected much by food, so can be taken after a meal but alcohol, however, may reduce its effects. Levitra will last for a similar amount of time as Viagra (four to six hours). The main difference to Viagra is that Levitra tends to be less affected by food or alcohol so can be taken with meals. There is also some evidence that Levitra is more effective in diabetics than other erectile dysfunction medicines. Side Effects and Warning Viagra, Cialis, and Levitra drugs all come from the same class of chemicals and so have many similar side effects and warning. All three have similar side effects

1. headaches,
2. stuffy nose,
3. facial flushing,
4. stomach ache or back pain being the most common.

Viagra, Cialis and Levitra should not be taken by men who take medicines or recreational drugs containing nitrates. Cialis should not be taken by men who are on medicines called alpha blockers which are sometimes used to treat prostate problems or high blood pressure. Men who take alpha blockers can use Viagra or Levitra but must allow at least a six hour gap between taking the alpha blocker and Viagra or Levitra.   Is it okay to buy Viagra, Cialis, Levitra online? When buying Viagra, Cialis or Levitra online it’s important to ensure that you are getting them from a trustworthy source like ExcessRx. There are lots of websites offering erectile dysfunction medicines but many supply fake or counterfeit medicines. Apart from the fact that these medicines may not work, there is also the risk of potentially serious adverse effects from taking non-genuine medicines. ExcessRx only provides medicines that have been licensed and approved by Food and Drug Administration (FDA) which means that they have passed rigorous testing before being clinically approved for patients.