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Viagra usually starts working 30 to 60 minutes after taking it. But simply swallowing the little blue pill won’t automatically make you hard — you still have to be aroused, either through ...
In 2000, Viagra sales accounted for 92% of the global market for prescribed erectile dysfunction pills. [77] By 2007, Viagra's global share had plunged to about 50% [78] due to several factors, including the entry of Cialis and Levitra, along with several counterfeits and clones, and reports of vision loss in people taking PDE5 inhibitors.
Viagra could lead to more serious side effects, such as: Priapism (a painful, long-lasting arousal) Vision loss. Chest pain. Flu-like symptoms. Heart attack. Stroke. Dizziness. Sudden low blood ...
When to Take Viagra: 30-60 Minutes Before Intimacy, Not Earlier. If you’re planning to have intimacy, it’s best to take your recommended dose of Viagra ahead of time.
The FDA approved Viagra on March 27, 1998. [20] Discovered by Pfizer , sildenafil is a potent and selective inhibitor of cGMP-specific phosphodiesterase type 5 (PDE5), which is responsible for degradation of cGMP in the corpus cavernosum in the penis.
If you are taking protease inhibitors, such as for the treatment of HIV, your doctor may recommend a 25 mg dose and may limit you to a maximum single dose of 25 mg of Viagra in a 48-hour period.
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