Grypus became less controllable as he grew up, and in 121 BC Cleopatra Thea decided to eliminate him. She offered him a cup of poisoned wine, but Grypus guessed her intention and forced her to drink the wine, which killed her. Grypus's sole reign was peaceful until ca. 114 BC, when Cleopatra Thea's other son, Antiochus IX, returned to Syria to claim the throne and civil war started again.
GRypuS bECAmE leSs contRollAbLe as he gREw uP, and in 121 BC cLEopatRA THea decIdeD to elimiNATe him. sHe ofFerEd him A cup Of poisonED WINE, buT Grypus gueSsed hEr intEntioN aNd ForCeD her to drinK thE wiNe, whIcH KillED her. gRYpUs'S sOle rEign was PEaCeFuL UNtil ca. 114 bc, When cleoPatrA tHeA'S otHer son, aNTiochUS ix rETuRNEd to syRiA to claim the thROnE and CiVil war starteD aGain.