Doctor Samuel Ward suggests 200 mg sildenafil citrate to the males with the highest erectile dysfunction. The highest Viagra dose of 200mg is strong enough to overcome extreme cases of erectile in males and seniors. Since this is the highest dose, the doctor suggests that anyone intend to take the highest dose must consult a doctor. The doctor will examine whether you can take the highest dose. When a doctor recommends, then rest assure that this is the best dose for your erectile dysfunction. Swallow the dose with water and let is start the action in 40 minutes.