- Macrobid
- Macrodantin
- Malarone
- Malaseb
- Manerix
- Matulane
- Mavenclad
- Mavik
- Maxalt
- Maxalt-MLT
- Maxidex Ophthalmic Ointment
- Maxidex Ophthalmic Solution
- Maxitrol Eye Drops
- Maxitrol Eye Ointment
- Maxzide
- Mayzent
- Megace
- Megace Oral Suspension
- Mekinist
- Melatonin
- Mellaril
- Meloxicam
- Memantine
- Menopur
- Mentax
- Mepron
- Mepron Suspension
- Meropenem
- Merrem
- Mesalamine
- Mestinon
- Mestinon SR
- Metacam Oral Suspension
- Metacam for Dogs
- Metformin
- Metformin Hydrochloride
- Methyldopa
- Metoject
- Metoprolol SR
- Metoprolol Tartrate
- MetroCream
- MetroGel
- Metronidazole
- Mevacor
- Mexiletine
- Mexitil
- Micardis
- Micronor
- Microzide
- Midamor
- Midodrine
- Miglustat
- Migranal Nasal Spray
- Minestrin
- Minims Cyclopentolate
- Minipress
- Minitran
- Minivelle
- Minocin
- Minocycline
- Mirapex
- Mirapex ER
- Mirena
- Mirtazapine OD
- Mirvaso
- Mobic
- Mobiflex
- Modicon
- Moduretic
- Molipaxin
- Mometasone Cream
- Mometasone Nasal Spray
- Monistat 7
- Monitan
- Monoket
- Monopril
- Monoprost
- Monovisc
- Monurol
- Motegrity
- Motilium
- Motrin
- Mounjaro Pen
- Mounjaro Vial
- Movantik
- Moviprep
- Moxifloxacin Opthalmic Solution
- Mucomyst
- Multaq
- Muse
- Myambutol
- Mycobutin
- Mycophenolate Mofetil
- Mycostatin
- Mycostatin Cream
- Mycostatin Ointment
- Mycostatin Oral Suspension
- Mydriacyl
- Myfortic
- Myleran
- Myrbetriq
- Mysoline