Vidalista 40 is a prescription drug in which a component called sildenafil citrate plays a major role. This drug helps in eliminating the disease of impotence in men and sustaining erection for a long time. This drug provides adequate blood flow to the penis. The effect of this drug lasts for 4 to 6 hours. This drug should not be taken by women and children. This medicine should be taken only on the advice of a doctor.
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