Revatio is the brand name of sildenafil prescribed for PH. Generic sildenafil is always sold as sildenafil. There are currently no other brand names for the drug, aside from Viagra and Revatio. The United Kingdom allows for over-the-counter sales of the drug, in part to discourage the market for fake sildenafil, one of the most commonly counterfeited drugs in the world.
While generic sildenafil and Viagra are equally safe and effective, there is one key difference between the medications: cost. It treats ED symptoms. It just helps control blood pressure in the pulmonary arteries. Sildenafil is in a class of medications called phosphodiesterase type 5 PDE5 inhibitors. These drugs restrict the action of phosphodiesterase enzymes PDEs , which degrade cGMP, a type of molecule that relaxes smooth muscle tissue in the body, such as those in the blood vessels that allow the penis to become erect.
Taking sildenafil improves circulation by helping the arteries relax enough to fill more easily with blood. Sildenafil is quickly absorbed into the bloodstream, reaching maximum concentration in about an hour for most users.
Sexual stimulation is still required. However, for most healthy people, sildenafil can make an erection easier to achieve. A 4-year study found that sildenafil is generally safe to use over the long-term. Sildenafil is available as a tablet in a range of doses. Like Viagra, generic sildenafil is sold in milligram mg , mg, mg, and mg tablets. The mg dose is standard, though some doctors start patients on a mg dose to see if that is sufficient.
For ED, sildenafil is taken on an as-needed basis, ideally an hour before intercourse. However, it may be effective as soon as 30 minutes before intercourse and may still be effective 3 or 4 hours later. After 4 hours, the effects of sildenafil tend to wear off. Sildenafil prescribed for PH is available in 5-mg and mg pills and liquid form. Viagra, Levitra, Cialis, and Stendra will not cure ED, but they may provide relief from its symptoms. There are many side effects and interactions to consider, but, with the right choice and correct use, studies show that these drugs can help a person to overcome ED and engage in sexual activity.
It is worth remembering, meanwhile, that none of these drugs will provide sexual stimulation. The person will need stimulation in order to have an erection. The only way to know which drug is best for you may be through trial and error. People should work directly with a doctor to track side effects and decide which drug is their best treatment option. A case study examines the damage that Viagra can potentially do to the retina.
In doses above recommended levels, the blue pill might make you see red. Could watermelon work as a natural remedy for erectile dysfunction in the same way as Viagra? We look at the science and evidence behind this claim. Impotence is the inability to sustain a male erection. It can lead to a breakdown in relationships and cause embarrassment and depression. In this MNT…. Viagra, Cialis, Levitra, and Stendra: Which is best?
Medically reviewed by Alan Carter, Pharm. Function Side effects and interactions Cost and availability Who should take them? Outlook Viagra, Cialis, Levitra, and Stendra are popular drugs for treating the symptoms of erectile dysfunction. Other options are Levitra and Stendra.
Side effects and interactions. Share on Pinterest People who may have a weak heart should avoid Levitra. By providing your email, you agree to the Quartz Privacy Policy. Skip to navigation Skip to content. Discover Membership. Editions Quartz. More from Quartz About Quartz. Follow Quartz. These are some of our most ambitious editorial projects. From our Obsession. Edit Profile. Subscribe Now. Your Subscription Plan Cancel Subscription. Home India News Entertainment.
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