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Other well known PDE5 inhibitors include Cialis, Viagra, sildenafil 100mg cuánto tiempo dura el efecto, Viagra Connect, and Tadalafil Daily. Organic or physical causes for sexual dysfunction in men include vascular, hormonal and neurologic factors. Since a straddle injury or use of a narrow saddle can obstruct and impair arteries to the penis, bicycle riding is also considered a risk factor for erectile dysfunction.
There are also some rarer side effects