Sildenafil Citrate and Duloxetine are prescription drugs; hence, it is recommended to use Buy Filagra DXT Plus as prescribed by your medical advisor. You need to take this medicine with a full glass of water for appropriate assimilation of drugs. Consume prescribed dose at least one hour before sexual activity and not more than once in a day. Remember, it is not a cold or cough medicine that is to be used on a daily basis.