pharmacy (n.)youdaoicibaDictYouDict
late 14c., "a medicine," from Old French farmacie "a purgative" (13c.), from Medieval Latin pharmacia, from Greek pharmakeia "use of drugs, medicines, potions, or spells; poisoning, witchcraft; remedy, cure," from pharmakeus (fem. pharmakis) "preparer of drugs, poisoner, sorcerer" from pharmakon "drug, poison, philter, charm, spell, enchantment." Meaning "use or administration of drugs" is attested from c. 1400; that of "place where drugs are prepared and dispensed" is first recorded 1833. The ph- was restored 16c. in French, 17c. in English (see ph).
philtre (n.)youdaoicibaDictYouDict
also philter, "love potion," 1580s, from Middle French philtre (1560s), from Latin philtrum (plural philtra) "love potion," from Greek philtron "a love-charm," literally "to make oneself beloved," from philein "to love" (from philos "loving;" see philo-) + instrumental suffix -tron.