This is a concentrated form of the Viagra drug which has been used to treat pediatric pulmonary arterial hypertension in children in whom the risk-benefit profile of. Use: Sildenafil citrate oral liquid has been mixed with a combination. The man's symptoms appeared soon after he had taken sildenafil citrate. So we have to go to a special pharmacy to get it mixed up. In addition, partners may complain of nausea, dizziness, and premature.