| Question | Answer | Treatment | s/s | pregnancy catagory | notes | Brand name |
| metoprolol | antihypertensive, Beta-1 adrenergic antagonist | mild/moderate hypertension | bradycardia, hypotension, dizziness, CHF, impotence | c | | Lopressor, Toprol XL |
| metronidazole | antibacterial, amebicide, | intestional amebiasis, trichomonasis, bacterial vaginosis | headache, dizziness, unpleasant metallic taste, severe disulfiram reaction if administered with alcohol | b | | Flagyl |
| midazolam | ultra short acting benzodiazepine, sedative | used as a general anestetic | sedation, dizziness, dry mouth, nausea, vomting | d | | Versed |
| montelukast | phrophylaxis and tx of chronic asthma | | headache, dizziness, nausea | b | | Singulair |
| nabumatone | NSAID | sysmptoms of osteo and rheumatoid arthritis | headache, dizziness, GI upset, nausea, GI bleeding | d | | |
| naproxen | NSAID | symptoms of osteo and rheumatoid arthritis | headache, dizziness, GI upset and bleeding, nausea | c | | Naprosyn, Aleve |
| meloxican | NSAID, | management of symptoms of rheumatoid and asteo-arthritis | headache, nausea, GI pain, renal impairment, GI bledding | d | | Mobic |
| metaxalone | centrally acting skeletal muscle relaxant | relief of symptoms of acute, temporary skeletal muscle disorders | sedation, dizziness, blurred vision, nausea, GI upset | c | | Skelaxin |
| metformin | hyperglycemia associated with type II diabetes | | lactic acidosis, nausea, anorexia, diarrhea | b | | Glucophage |
| methylphenidate | CNS stimulant | ADD & ADHD | nervousness, insomnia, tahcycardia, hypertension, nausea, anorexia | c | | Ritalin |
