OK, you asked for it.
If you aren't already aware of all this, lets start with the term Pharmacy, and most relevant, just take note of the word I bolded in the following...simply the Greek for seller of drugs:
phar·ma·cy
ˈfärməsē/
noun
noun: pharmacy; plural noun: pharmacies
a store where medicinal drugs are dispensed and sold.
the science or practice of the preparation and dispensing of medicinal drugs.
Origin
late Middle English (denoting the administration of drugs): from Old French farmacie, via medieval Latin from Greek pharmakeia ‘practice of the druggist,’ based on pharmakon ‘drug.’
You can verify all over the net if you wish, and where the term pharmacy, or those who sell drugs comes from? "Sorcery". True, "Pharmacy" is for legal drugs in this day and age, but still, it's very relevant where the term came from and what it meant back then when the sorcerer was the drug dealer.
Next...this from the Strong's Concordance on pharmakeia:
"Lexicon :: Strong's G5331 - pharmakeia
φαρμακεία
Transliteration
pharmakeia
Pronunciation
fär-mä-kā'-ä (Key)
Part of Speech
feminine noun
Root Word (Etymology)
From φαρμακεύς (G5332)
Dictionary Aids
Vine's Expository Dictionary: View Entry
KJV Translation Count — Total: 3x
The KJV translates Strong's G5331 in the following manner: sorcery (2x), witchcraft (1x).
Outline of Biblical Usage [?]
the use or the administering of drugs
poisoning
sorcery, magical arts, often found in connection with idolatry and fostered by it
metaph. the deceptions and seductions of idolatry
Strong’s Definitions [?](Strong’s Definitions Legend)
†φαρμακεία pharmakeía, far-mak-i'-ah; from G5332; medication ("pharmacy"), i.e. (by extension) magic (literally or figuratively):—sorcery, witchcraft."
Still with me? Ok...good. Now that you know what it is, (drug dealers/sellers were the sorcerers) and you probably already know where I'm going with this, but let's get to that biblical proof you wanted:
Deuteronomy 18:10-12(KJV)
10 There shall not be found among you any one that maketh his son or his daughter to pass through the fire, or that useth divination, or an observer of times, or an enchanter, or a witch.
11 Or a charmer, or a consulter with familiar spirits, or a wizard, or a necromancer.
12 For all that do these things are an abomination unto the Lord: and because of these abominations the Lord thy God doth drive them out from before thee.
Again, you probably already know, but see the term Wizard here as bolded from the prior verse, and what it means. And following the wizard defintion, I even quote the same from the ESV, where they actually use the term sorcerer, instead of Wizard.
wiz·ard
ˈwizərd/
noun
noun: wizard; plural noun: wizards
1.
a man who has magical powers, especially in legends and fairy tales.
synonyms: sorcerer, warlock, magus, (black) magician, necromancer, enchanter; archaicmage
"the wizard cast a spell over them"
The ESV version I mentioned:
Deuteronomy 18:10–12 (ESV)
10 There shall not be found among you anyone xwho burns his son or his daughter as an offering,5 anyone who practices divination or tells fortunes or interprets omens, or sorcerer 11 or a charmer or a medium or a necromancer or cone who inquires of the dead, 12 for whoever does these things is an abomination to the Lord. And because of these abominations the Lord your God is driving them out before you.
I'll get to some of your interpretations from the Bible, and the "medicinal" part later, but until then, check me out on all that to make sure I'm being truthful. And again, there is so much more on it out there for the searching.