The flushing is an effect of the buildup of nitric oxide (because the Viagra blocks the enzyme that breaks it down), and it's a common symptom - about 10% of people that take Viagra.
The reflux symptoms are interesting - physiologically I could see how it might have an effect, but it's not a known common side effect.
Keep in mind that the symptoms you mention are class effects, and you might have the same symptoms with tadalafil (Cialis) as well.
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Re: Cialis gets the bear stamp of approval
The reflux symptoms are interesting - physiologically I could see how it might have an effect, but it's not a known common side effect.
Keep in mind that the symptoms you mention are class effects, and you might have the same symptoms with tadalafil (Cialis) as well.