For many years starting with NBC's last run in the mid-1970s, all references to Underdog swallowing his Super Energy Pill were censored, most likely out of fear that kids would see medication that looked like the Underdog pills (red with a white "U" on them) and swallow them. Two instances that did not actually show Underdog swallowing the pills remained in the show. In one, he drops pills into water supplies; in the other, his ring is damaged and he explains that it is where he keeps the pill—but the part where he actually swallows it was still deleted.