Originally posted by: h8red
up until recently I usually recommended Delsym because I've used it and it "seemed" to work for me to let me sleep all night. There have been a few articles recently that claim that the active ingredient in Delsym or Robitussin DM (dextromethorphan) has mostly a placebo effect. What is now recommended is to first use an older generation antihistamine. I like chlorpheniramine because it doesn't cause as much drowsiness as diphenhydramine (aka Benedryl). The only problem with chlorpheniramine is that it only lasts ~4 hours. There isn't a problem combining the 2 together so I think it may be wise to use both.