Dosage and cost: Sildenafil is available through Roman by prescription in 25-, 50-, or 100-milligram (mg) pills, ranging in price from $4 to $10 per dose. Brand-name Viagra is also available ...

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Here are the most important facts about sildenafil: Sildenafil (the active ingredient in brand-name Viagra ... sildenafil at ...

You might have seen Cialis® — the erectile dysfunction (ED) drug — available in doses ranging from 2.5 mg to 20 mg. Surely ..