Edmond Hamilton 
Galaxy Mission [EPUB ebook] 

They called him the Life-Lord and the deadly milk-white elixir that his syndicate pushed was called Lifewater.As promised, Lifewater brought youth to the old. Women who were losing their once cherished beauty, men who were losing their strength gave their life’s savings for a vial of the magic substance. What they did not know was that the powerful brew could cause sudden and violent death.As the fatal youth epidemic spreads throughout the Solar System, Captain Future battles with time and danger to save his fellow beings from doom – only to find himself trapped in a master fiend’s plot to conquer the solar system.