Men with sexual impotence can be treated with Filagra fxt (Sildenafil Citrate), sometimes referred to as the "black pill." In order to assist a man get and sustain a long-lasting erection, this tablet aids to increase blood circulation through the penile. When taken 30 minutes prior to sexual activity, this medication is most effective. Consume this medication with water; do not crush or chew the tablet. This medication can be used either before or after meals.