Sildenafil acts as the active ingredient in the drug Malegra FXT. Malegra FXT Is Best For Ed Treatments. Using the drug Malegra FXT can help you solve your sex problem. Consult a doctor before taking Malegra. Take the Malegra FXT drug only once a day. Malegra tablets should be kept away from small children and pets. Malegra FXT is one of ED's best tablets. Malegra is one of the best tablets for sex.