This drug has a certain effect in improving male hardness, my husband before because of the hardness problem several times ready to have a couple of life without end, although I also comforted him ∞, but he still can not pass the inner that hurdle. Then I accompanied him to the hospital to see the doctor, then the doctor let him eat sildenafil citrate tablets, it can let the male in the touch, kiss these foreplay stimulation, improve the hardness as well as the duration of time.