I heard this today while listening to old_time_radio and was surprised to find it on YouTube. There is no shortage of health ads on OTR and this one from the 1960s and constipation was apparently not as taboo as one might think.
It's a wee bit racist. o_O Let's just say it fits the constipation theme. It takes the odd but still true idea that an active life can keep you regular vs. "you highly civilized people" who need a laxative.
You guys. I've read the copy on this laxative ad, and it promises the results that you'd expect from a 1919 laxative ad, but... There's a picture of tiny people scrubbing out an intestine.