These sorts of warnings have been going out since at least the 1980s. See <a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=10161818" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=10161818</a> where I found a 1988 newspaper article that said:<p>&gt; King said abuse of caffeine pills is fairly common among the teens and young adults treated by her [drug treatment] program. ... Sixteen people in North Carolina have died of caffeine poisoning since 1970, all from pills.