- Mestinon-SR
- Metadate CD
- Metaderm Mild
- Metaderm Regular
- Metaglip
- Metahydrin
- Metamucil
- Metamucil Apple Crisp Fiber Wafers
- Metamucil Cinnamon Spice Fiber Wafers
- Metamucil Orange Flavor
- Metamucil Smooth Sugar-Free, Citrus Flavor
- Metamucil Smooth Sugar-Free, Orange Flavor
- Metamucil Smooth Sugar-Free, Regular Flavor
- Metamucil Smooth, Citrus Flavor
- Metamucil Smooth, Orange Flavor
- Metamucil Sugar Free
- Metamucil Sugar-Free, Lemon-Lime Flavor
- Metamucil Sugar-Free, Orange Flavor
- Metandren
- Metaproterenol
- Metastron
- Metaxalone
- Meted
- Metformin
- Methadone Oral
- Methadose
- Methadose Oral Concentrate
- Methenamine
- Methergine
- Methimazole
- Methocarbamol Oral
- Methocel
- Methotrexate For Cancer
- Methotrexate For Noncancerous Conditions
| - Methotrexate Injection
- Methotrexate LPF
- Methotrexate Oral
- Methoxsalen
- Methsuximide Oral
- Methyclothiazide
- Methyldopa
- Methyldopa and Hydrochlorothiazide
- Methyldopa and Thiazide Diuretics
- Methylene Blue
- Methylergometrine
- Methylergonovine Oral
- Methylphenidate
- Methylphenidylacetate hydrochloride
- Methylprednisolone Oral
- Methylprednisolone Sodium Succinate Injection
- Methysergide
- Meticorten
- Metipranolol Ophthalmic
- Metoclopramide
- Metoclopramide Hydrochloride Injection
- Metoclopramide Hydrochloride Intensol
- Metoclopramide Oral
- Metoclopramide omega
- Metolazone
- Metopirone
- Metoprolol
- Metric 21
- Metro I.V.
- MetroCream
- MetroGel
- MetroGel-Vaginal
- MetroLotion
| - Metrodin
- Metronidazole
- Metronidazole Injection
- Metronidazole Oral
- Metronidazole Topical
- Metyrapone
- Metyrosine
- Mevacor
- Mexiletine
- Mexitil
- Mezlin
- Mi-Acid
- Mi-Acid Double Strength
- Miacalcin
- Micafungin
- Micanol
- Micardis
- Micardis HCT
- Micardis HCT containing Telmisartan and Hydrochlorothiazide
- Micardis Plus
- Micatin
- Miconazole
- Miconazole Injection
- Miconazole-7
- Micozole
- Micrainin
- Micrainin containing Meprobamate and Aspirin
- Micro-K
- Micro-K 10
- Micro-K LS
- Microlipid
- Micronase
- Micronor
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