According to digitalomega at
http://www.drugs.com/forum/topic.asp?TOPIC_ID=271
It's a 25mg Ephedrine tablet...with 200mg of
Guaifenesin. Sold as "DoubleAction Ephedrine" -- a bronchial dialator & expectorant.
According to my OTC PDR, this is a generic Primatene Pill.
verwon@gmail.com
My information is not guaranteed correct. I do not get them right all the time, but I do enjoy the hunt~