AHA News: Former Grand Slam Tennis Champion Murphy Jensen Went From Touting CPR, AEDs to Having Them.No Sign That Anesthesia in Pregnancy Affects Child's Later Development.First Sex Activates Boost in Vaginal Immune Response, Study Finds.Black Licorice Is a Candy That Should Inspire Caution.
an inability to differentiate between the colors green and blue.If you are taking Viagra and you have nausea, chest pain or dizziness during sex, seek medical help immediately as you may have a life-threatening condition.Īpproximately 15% of persons taking Viagra experience side effects. Priapism, or an erection that lasts more than four hours that can damage the penis.The most common side effects of tadalafil are: If you are taking Cialis and you have nausea, chest pain or dizziness during sex, seek medical help immediately as you may have a life-threatening condition. What are the side effects of Cialis and Viagra? Cialis SLIDESHOW Erectile Dysfunction (ED) Causes and Treatment See Slideshow The longer cGMP persists, the more prolonged the engorgement of the penis. Thus, Cialis and Viagra prevent the destruction of cGMP and allows cGMP to accumulate and persist longer. Cialis and Viagra inhibit an enzyme called phosphodiesterase-5 (PDE5) which destroys the cGMP. It is the cGMP that is primarily responsible for the erection by affecting the amount of blood that the blood vessels deliver and remove from the penis. Nitric oxide then activates the enzyme, guanylate cyclase, which causes the production of cyclic guanosine monophosphate (cGMP). Under normal conditions, sexual stimulation leads to the production and release of nitric oxide in the penis. Penile erection is caused by the engorgement of the penis with blood. They are in a class of drugs called phosphodiesterase-5 (PDE5) inhibitors that also includes vardenafil ( Levitra, Staxyn ODT), and avanafil ( Stendra). Cialis provides penile hardness (the ability to obtain an erection) over a longer period than Viagra because it lasts up to 18 hours, while Viagra only lasts for about 4 to 6.Ĭialis (tadalafil) and Viagra ( sildenafil) are oral drugs that are used for treating impotence (the inability to attain or maintain a penile erection) and benign prostatic hyperplasia ( BPH). One difference between the drugs is how long they stay in your system.Common side effects of Cialis and Viagra that are similar include flushing (redness or warmth of the face, neck, or chest), headaches, stomach pain or upset, flu-like symptoms (such as stuffy nose, sneezing, or sore throat), memory problems, muscle or back pain, blurred vision and changes in color vision (such as an inability to differentiate between the colors green and blue), dizziness, diarrhea, nausea, low blood pressure, abnormal ejaculation, and prolonged erections ( priapism), loss of hearing, and ringing in the ears.Adcirca is another brand name of tadalafil.Cialis ( tadalafil) and Viagra ( sildenafil) are phosphodiesterase-5 (PDE5) inhibitors used for treating impotence ( erectile dysfunction, or ED).Here are the greatest current production engines, in alphabetical order. More importantly, these 16 engines don't just power big-buck exotics and 200-mph supercars, they're also found under the hoods of sedans, SUVs, full-size trucks, and affordable sports cars. No single automaker or region dominates this list. Although most are turbocharged, this list of our favorite current production engines also includes several force-fed by a supercharger and a few without a form of artificial aspiration.Īnd they come from all over the world. Today's best examples not only deliver the greatest combination of performance and personality we've seen, but they also span a wide variety of configurations, with four, five, six, eight, twelve, and even 16 cylinders. Gasoline and diesel-burning automotive power plants keep getting cleaner and more efficient. Although calls for the internal combustion engine's demise continue, and loudly, it not only lives, it keeps getting better.
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