Arrow poisons are used to poison arrow heads or darts for the purposes of hunting and warfare. They have been used by indigenous peoples worldwide and are still in use in areas of South America, Africa and Asia. Notable examples are the poisons secreted from the skin of the poison dart frog, and curare (or 'ampi'), a general term for a range of plant-derived arrow poisons used by the indigenous peoples of South America.
Poisoned arrows have featured in mythology, notably the Greek story of Heracles slaying the centaur Nessus using arrows poisoned with the blood of the Lernaean Hydra. The Greek hero Odysseus poisons his arrows with hellebore in Homer's Odyssey. Poisoned arrows also figure in Homer's epic about the Trojan War, the Iliad, in which both Achaeans and Trojans used toxic arrows and spears.Baldr's death in the Norse myths features poison arrows. The modern terms "toxic" and "toxin" derive from the ancient Greek word for "bow", toxon, from Old Persian *taxa-, "an arrow".
Poison arrows were used by real peoples in the ancient world, including the Gauls, ancient Romans, and the nomadic Scythians and Soanes. Ancient Greek and Roman historians describe recipes for poisoning projectiles and historical battles in which poison arrows were used. Alexander the Great encountered poisoned projectiles during his conquest of India (probably dipped in the venom of Russell's viper) and the army of the Roman general Lucullus suffered grievous poison wounds from arrows shot by nomads during the Third Mithridatic War (1st century BC).