Pharmakeia φαρμακεία is the Greek translation for pharmaceuticals or drugs used in sorcery, magic or magical enchantments. Generally translated as sorcery, enchantments or witchcraft, in the Bible, it is the mixing and use of psychotics in magic rituals, demon summoning and spell casting.
In the Bible, spiritual harlotry is not only defined by the worship of idols or other gods. Harlotry also involves the practice of occultic rituals or, seeking out practitioners of the dark arts: diviners, witches or those who call upon demons, familiar spirits or, spirits of the deceased. Many rituals for demon summoning involve the use of pharmaceuticals, psychedelics or hallucinogens, used by sorcerers.
Pharmakeia, in the simplest definition is the intentional use of drugs, hallucinogens, psychedelics and poisons in combination with sorcery, witchcraft, enchantments and spells to alter the state of consciousness when communicating with demons. Pharmakeia is also used to inflict harm upon another with the use of toxins, which is considered as a poisoning or spellbinding ritual.
Remember the wicked witch of the West, from The Wizard of OZ? She poisoned Dorothy, the lion and Toto with sorcery: a combination of poison and a magic spell. She mixed pharmakeia, her poison potion in a golden goblet. She then spread this potion over her magic looking glass while chanting, 'Sleep, sleep" This was a combination of pharmakeia - a toxin, poison mixed with her magic spell; aka: witchcraft. This is a silly but effective example of the use of sorcery aka: pharmakeia in combination with a magic spell.