How is viagra able to divert blood flow to a particular part of the body ? and can it be used for other body parts also ?
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It doesn’t specifically target the penis. It actually started as a heart medication. Erections were a side effect. Remember the difference between side effect and treatment is intent. Many medications are like this where a side effect in one patient turns into the treatment for another. Aspirin is an example of this as well. Sure it can treat pain but also impacts clotting. If you are taking it for pain it has a side effect impacting how well your blood clots. If you take it to treat blood clots it has the side effect of reducing pain.
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