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When you’re sexually aroused, your brain sends messages to your penis. These messages cause certain chemicals to be released in your penis. With ED, you have trouble getting and keeping an erection that’s firm enough to allow you to have sex. Priapism is a medical emergency that needs to be treated right away. If it’s not treated, the condition can damage the tissues in your penis and cause irreversible erectile dysfunction.

Thus, making erections easier to achieve and maintain if you are sexually aroused. If you are considering using generic Viagra, it is important to consult with your doctor first. Your doctor can provide you with information on potential side effects and other important considerations. Additionally, it is important to follow the directions provided by your doctor when taking generic Viagra. This includes taking the medication as prescribed, making sure to take it at the same time every day, and always discussing any new medications with your doctor.

Structurally vardenafil (Levitra) is similar to sildenafil, while tadalafil (Cialis) is very different. Vardenafil (Levitra) is almost 10 times more biochemically potent than sildenafil, therefore a lower dose is needed to facilitate the penile erection, potentially resulting in less side effects. Selectivity is the ability of the drug to attach to the specific enzyme PDE 5 found in penile tissues. Vardenafil (Levitra) is more selective than sildenafil and tadalafil (Cialis) to PDE5, which again means a lower dose is needed with potentially less side effects. Tadalafil is very specific for PDE5 and is also very specific for the enzyme PDE11. Unfortunately, we don’t know much about PDE11, which is found in the heart, in the pituitary gland in the brain and in the testicles.

Once the effects of Viagra have worn off, it’s likely the side effects will too. If you are worried about the side effects you are experiencing, contact your doctor for advice. Several factors can affect how long Viagra lasts including, your age, health, diet, and alcohol consumption. It is noteworthy that before the invention of Viagra, there were no effective and at the same time safe ways to deal with erectile dysfunction. All of them were fraught with serious consequences for the body of men and mostly had a narcotic character.

If you take it sooner, the amount of sildenafil circulating in your bloodstream may not be enough to make an impact. On the other hand, taking Viagra more than two hours before sex may reduce its effectiveness. Although&nbsp