- Macrobid
- Macrodantin
- Malarone
- Manerix
- Marinol
- Marvelon 21
- Marvelon 28
- Mavik
- Maxair
- Maxalt
- Maxalt RPD
- Maxitrol eye ointment
- Maxzide
- Meclizine
- Meclofenamate
- Medrol
- Medrol Dosepak
- Medroxy tablets
- Medroxyprogesterone
- Mefanamic acid
- Mefloquine
- Megace
- Megace oral suspension
- Megestrol
- Megestrol Suspension
- Meloxicam
- Memantine
- Menest
- Menostar Patch
- Mentax Cream
- Mephyton
- Mepron
- Mercaptopurine
- Mesalamine (Generic equivalent to Asacol HD)
- Mestinon
- Mestinon SR
- Metaglip
- Metaproterenol Syrup
- Metformin
- Metformin ER
- Metformin XL
- Metformin/Glipizide
- Metformin/Glipizide (generic equivalent to Metaglip)
- Methazolamide
- Methenamine
- Methimazole
- Methitest
- Methotrexate
- Methotrexate injection
- Methotrimeprazine
- Methyclothiazide
- Methyldopa
- Methyldopa/HCTZ
- Methylprednisolone
- Metipranolol
- Metoclopramide
- Metoclopramide syrup
- Metolazone
- Metoprolol
- Metoprolol L
- Metoprolol SR
- Metoprolol XR
- Metoprolol/HCTZ
- Metrocream
- Metrogel
- Metrogel Vaginal
- Metrolotion
- Metronidazole
- Metronidazole vaginal gel
- Mevacor
- Mexiletine
- Mezavant (known as Lialda in US)
- Miacalcin Nasal Spray
- Micardis
- Micardis HCT
- Micardis Plus
- Micro-K Extencaps
- Microgestin
- Microgestin Fe 1.5/30
- Microgestin Fe 1/20
- Microgynon 30
- Micronase
- Micronor
- Microzide
- Midodrine
- Migranal Nasal Spray
- Migril
- Milnacipran (Generic equivalent to Savella)
- Mimyx Cream
- Minestrin 28
- Minipress
- Minitran patch
- Minocin
- Minocycline
- Minovral 21
- Minovral 28
- Minoxidil
- Mirapex
- Mirena
- Mirtazapine
- Mirtazapine OD
- Misoprostol
- Mobicox
- Moclobemide
- Moduret
- Moexipril
- Mometasone Nasal Inhaler
- Mometasone ointment
- Monocor
- Monopril
- Montelukast
- Montelukast/Bambuterol
- Moxifloxacin
- Moxifloxacin eye drops
- Mucinex
- Mucinex DM
- Multaq
- Multigen
- Multivitamins with Fluoride
- Mycobutin
- Mycophenolate
- Mycostatin topical powder
- Myfortic
- Mylan-Propafenone
- Mylotarg
- Myochrysine
- Mysoline
- Magnesium Sulphate Injection
- Materna
- Men's Daily Pack
- Men's Formula
- Metamucil capsules
- Micatin Powder Spray Unscented
- Mitozan
- Moisturel lotion
- Monoject insulin syringes
- Motrin Extra Strength
- Mucomyst
- Muro 128 eye drops
- Muro 128 eye ointment
- Mydfrin Opth. Solution
