Sangraal

A very expensive medical treatment that not just retards but actually reverses some of the effects of aging, Sangraal was created by the pharmaceutical giant Theromise. Aimed at the extremely rich, the drug is the central part of a larger suite of treatments including pills and creams.

Sangraal itself is delivered by direct injection into the bloodstream, which is unsurprising when you learn that a major component of it is blood taken from teenagers. Or at least, it was – Batman has shut down the operation by leaking this information to a journalist named Clark Kent, who write an exposé about it.

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Origin: Mercy of the Father by Tom Taylor, from his Detective Comics series.