Elixir is a video game for the Acorn Electron and BBC Micro released in 1987 by Superior Software.
In order to restore him to his normal size the player has to navigate their way around the laboratory, collecting vitamin pills and finding the elixir of the title.
[1] The game was released in 1987 for the Acorn Electron and BBC Micro on a wide variety of media.
It was included on the Play It Again Sam 5 compilation in 1988 and also re-released in 1990 as part of the Superior/Blue Ribbon budget range.
When reviewing the PIAS 5 compilation, Electron User found the game lacking compared to the "superb" Imogen (also on the compilation), saying "Elixir is an arcade adventure that originates from the opposite end of the quality spectrum".