2009 was a huge year for Leyva seeing him go on tour with Ghostface Killah and The Grouch respectively,and on September 24, 2009 releasing a project produced entirely by The Alchemist entitled The Antidote to get the fans hyped up for his debut album Boy Meets World.
In 2005, Donaghy appeared as a backing vocalist on the Mattafix album Signs of a Struggle and on the Morcheeba album The Antidote.
A legal dispute with A&M/PolyGram Records and the then-forthcoming merger between the MCA and PolyGram families of labels that formed the Universal Music Group forced its debut album, Deadly Venoms: The Antidote, to remain in its vaults, although the single “One More to Go” (featuring Inspectah Deck, Method Man, Cappadonna, Street Life, and GZA) b/w “Bomb Threat,” was released and the album was later leaked.
Homnibus notices that Papa Smurf has fallen sick due to using sulfur in the formula, but lacks some seeds needed for the antidote, so he sends Oliver to buy some.
In 2003, in a totally unprecedented project, Peixoto joined forces with the Gothic metal band Moonspell and together they produced a book and record, The Antidote.