Feen-A-Mint.....sounds like mint-flavoured cocaine. But it was a women's laxative that came in a chewing gum as well as pills. But I remember this commercial for how tacky it was (how you ever noticed in '70s laxative commercials how people just randomly stopped everything to loudly talk about their "irregularity" problem?)
And the daughter here gets the gum while stuffy old mom takes the pills.