Depends: Viagra (sildenafil) is commercially available in 25, 50, or 100mg tablets. These agents should always be used cautiously, especially in patients with a cardiac history. The safest way to take this medicine is to start at the lowest dose and titrate upwards rather than suffer untoward side effects from the maximum dose. Basically, start low & never exceed 100mg.
Answered 4/8/2019
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