I've been getting real bad congestion like cold/flu around the time of my period for an unusual 3 months now. Never had that before. And I've never realized, how my sex drive increased so suddenly after taking it at 8pm and felt.. just.no words could describe between 10pm and midnight. I'm almost 22 years old and have taken Mucinex D and DM before but this time around, was seeing if it could clear a blockage feeling in my right ear and my nose blowing from previous cold over a week ago. I just want to know why I had an unusual long lasting sex drive after taking this? A scientific explanation I hope.. or is it just me that likes the feeling of drugs like this (out of other prescribed medications, not actual drugs) and just get a sex drive feeling weak and vulnerable, etc?