ICD-10-CM
- Mace
- Macrogol
- Macrolide
- Mafenide
- Magaldrate
- Magic mushroom
- Magnamycin
- Magnesia magma
- Magnesium NEC
- Malathion (medicinal)
- Male fern extract
- M-AMSA
- Mandelic acid
- Manganese (dioxide) (salts)
- Mannitol
- Mannomustine
- MAO inhibitors
- Mapharsen
- Maphenide
- Maprotiline
- Marcaine
- Marezine
- Marihuana
- Marijuana
- Marine (sting)
- Marplan
- Marsh gas
- Marsilid
- Matulane
- Mazindol
- MCPA
- MDMA
- Meadow saffron
- Measles virus vaccine (attenuated)
- Meat, noxious
- Meballymal
- Mebanazine
- Mebaral
- Mebendazole
- Mebeverine
- Mebhydrolin
- Mebumal
- Mebutamate
- Mecamylamine
- Mechlorethamine
- Mecillinam
- Meclizine (hydrochloride)
- Meclocycline
- Meclofenamate
- Meclofenamic acid
- Meclofenoxate
- Meclozine
- Mecobalamin
- Mecoprop
- Mecrilate
- Mecysteine
- Medazepam
- Medicament NEC
- Medinal
- Medomin
- Medrogestone
- Medroxalol
- Medroxyprogesterone acetate (depot)
- Medrysone
- Mefenamic acid
- Mefenorex
- Mefloquine
- Mefruside
- Megahallucinogen
- Megestrol
- Meglumine
- MEK (methyl ethyl ketone)
- Meladinin
- Meladrazine
- Melaleuca alternifolia oil
- Melanizing agents
- Melanocyte-stimulating hormone
- Melarsonyl potassium
- Melarsoprol
- Melia azedarach
- Melitracen
- Mellaril
- Meloxine
- Melperone
- Melphalan
- Memantine
- Menadiol
- Menadione
- Menaphthone
- Menaquinone
- Menatetrenone
- Meningococcal vaccine
- Menningovax (-AC) (-C)
- Menotropins
- Menthol
- Mepacrine
- Meparfynol
- Mepartricin
- Mepazine
- Mepenzolate
- Meperidine
- Mephebarbital
- Mephenamin (e)
- Mephenesin
- Mephenhydramine
- Mephenoxalone
- Mephentermine
- Mephenytoin
- Mephobarbital
- Mephosfolan
- Mepindolol
- Mepiperphenidol
- Mepitiostane
- Mepivacaine
- Meprednisone
- Meprobam
- Meprobamate
- Meproscillarin
- Meprylcaine
- Meptazinol
- Mepyramine
- Mequitazine
- Meralluride
- Merbaphen
- Merbromin
- Mercaptobenzothiazole salts
- Mercaptomerin
- Mercaptopurine
- Mercumatilin
- Mercuramide
- Mercurochrome
- Mercurophylline
- Mercury, mercurial, mercuric, mercurous (compounds) (cyanide) (fumes) (nonmedicinal) (vapor) NEC
- Mersalyl
- Merthiolate
- Meruvax
- Mesalazine
- Mescal buttons
- Mescaline
- Mesna
- Mesoglycan
- Mesoridazine
- Mestanolone
- Mesterolone
- Mestranol
- Mesulergine
- Mesulfen
- Mesuximide
- Metabutethamine
- Metactesylacetate
- Metacycline
- Metaldehyde (snail killer) NEC
- Metals (heavy) (nonmedicinal)
- Metamfetamine
- Metamizole sodium
- Metampicillin
- Metamucil
- Metandienone
- Metandrostenolone
- Metaphen
- Metaphos
- Metapramine
- Metaproterenol
- Metaraminol
- Metaxalone
- Metenolone
- Metergoline
- Metescufylline
- Metetoin
- Metformin
- Methacholine
- Methacycline
- Methadone
- Methallenestril
- Methallenoestril
- Methamphetamine
- Methampyrone
- Methandienone
- Methandriol
- Methandrostenolone
- Methane
- Methanethiol
- Methaniazide
- Methanol (vapor)
- Methantheline
- Methanthelinium bromide
- Methaphenilene
- Methapyrilene
- Methaqualone (compound)
- Metharbital
- Methazolamide
- Methdilazine
- Methedrine
- Methenamine (mandelate)
- Methenolone
- Methergine
- Methetoin
- Methiacil
- Methicillin
- Methimazole
- Methiodal sodium
- Methionine
- Methisazone
- Methisoprinol
- Methitural
- Methixene
- Methobarbital, methobarbitone
- Methocarbamol
- Methohexital
- Methohexitone
- Methoin
- Methopholine
- Methopromazine
- Methorate
- Methoserpidine
- Methotrexate
- Methotrimeprazine
- Methoxa-Dome
- Methoxamine
- Methoxsalen
- Methoxyaniline
- Methoxybenzyl penicillin
- Methoxychlor
- Methoxy-DDT
- 2-Methoxyethanol
- Methoxyflurane
- Methoxyphenamine
- Methoxypromazine
- 5-Methoxypsoralen (5-MOP)
- 8-Methoxypsoralen (8-MOP)
- Methscopolamine bromide
- Methsuximide
- Methyclothiazide
- Methyl
- Methylamphetamine
- Methylated spirit
- Methylatropine nitrate
- Methylbenactyzium bromide
- Methylbenzethonium chloride
- Methylcellulose
- Methylchlorophenoxy-acetic acid
- Methyldopa
- Methyldopate
- Methylene
- Methylenedioxyamphetamine
- Methylenedioxymethamphetamine
- 3,4-methylenedioxymethamphetamine
- Methylergometrine
- Methylergonovine
- Methylestrenolone
- Methylethyl cellulose
- Methylhexabital
- Methylmorphine
- Methylparaben (ophthalmic)
- Methylparafynol
- Methylpentynol, methylpenthynol
- Methylphenidate
- Methylphenobarbital
- Methylpolysiloxane
- Methylprednisolone
- Methylrosaniline
- Methylrosanilinium chloride
- Methyltestosterone
- Methylthionine chloride
- Methylthioninium chloride
- Methylthiouracil
- Methyprylon
- Methysergide
- Metiamide
- Meticillin
- Meticrane
- Metildigoxin
- Metipranolol
- Metirosine
- Metisazone
- Metixene
- Metizoline
- Metoclopramide
- Metofenazate
- Metofoline
- Metolazone
- Metopon
- Metoprine
- Metoprolol
- Metrifonate
- Metrizamide
- Metrizoic acid
- Metronidazole
- Metycaine
- Metyrapone
- Mevinphos
- Mexazolam
- Mexenone
- Mexiletine
- Mezereon
- Mezlocillin
- Mianserin
- Micatin
- Miconazole
- Micronomicin
- Midazolam
- Midecamycin
- Mifepristone
- Milk of magnesia
- Millipede (tropical) (venomous)
- Miltown
- Milverine
- Minaprine
- Minaxolone
- Mineral
- Mineralocorticosteroid
- Minocycline
- Minoxidil
- Miokamycin
- Miotic drug
- Mipafox
- Mirex
- Mirtazapine
- Misonidazole
- Misoprostol
- Mithramycin
- Mitobronitol
- Mitoguazone
- Mitolactol
- Mitomycin
- Mitopodozide
- Mitotane
- Mitoxantrone
- Mivacurium chloride
- Miyari bacteria
- Moclobemide
- Moderil
- Mofebutazone
- Mogadon
- Molindone
- Molsidomine
- Mometasone
- Monistat
- Monkshood
- Monoamine oxidase inhibitor NEC
- Monobenzone
- Monochloroacetic acid
- Monochlorobenzene
- Monoethanolamine
- Monooctanoin
- Monophenylbutazone
- Monosodium glutamate
- Monosulfiram
- Monoxide, carbon
- Monoxidine hydrochloride
- Monuron
- Moperone
- Mopidamol
- MOPP (mechlorethamine + vincristine + prednisone + procarbazine)
- Morfin
- Morinamide
- Morning glory seeds
- Moroxydine
- Morphazinamide
- Morphine
- Morpholinylethylmorphine
- Morsuximide
- Mosapramine
- Moth balls
- Motor exhaust gas
- Mouthwash (antiseptic) (zinc chloride)
- Moxastine
- Moxaverine
- Moxisylyte
- Mucilage, plant
- Mucolytic drug
- Mucomyst
- Mucous membrane agents (external)
- Multiple unspecified drugs, medicaments and biological substances
- Mumps
- Mumpsvax
- Mupirocin
- Muriatic acid
- Muromonab-CD3
- Muscle-action drug NEC
- Muscle affecting agents NEC
- Muscle relaxant
- Muscle-tone depressant, central NEC
- Mushroom, noxious
- Mussel, noxious
- Mustard (emetic)
- Mustine
- M-vac
- Mycifradin
- Mycitracin
- Mycostatin
- Mycotoxins
- Mydriacyl
- Mydriatic drug
- Myelobromal
- Myleran
- Myochrysin (e)
- Myoneural blocking agents
- Myralact
- Myristica fragrans
- Myristicin
- Mysoline