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Medicines Beginning With M
40 medicines in the Drug Guide begin with the letter M. Every name links to a plain-language page covering what the medicine is for, its common side effects, its major cautions and — for most — a kidney note.
A B C D E F G H I K L M N O P Q R S T U V W Z
| Medicine | Brand names | Used for |
|---|---|---|
| Magnesium hydroxide | Milk of Magnesia | Constipation; Heartburn and acid indigestion |
| Magnesium oxide | Mag-Ox | Magnesium supplementation; Heartburn (as an antacid ingredient) |
| Mannitol | Osmitrol | Reducing pressure in the brain after injury (hospital); Reducing pressure in the eye (hospital) |
| Mebendazole | Emverm | Pinworm infection; Other intestinal worm infections such as whipworm and hookworm |
| Meclizine | Antivert, Bonine | Motion sickness; Vertigo and dizziness from inner ear problems |
| Medroxyprogesterone | Provera, Depo-Provera | Birth control (long-acting injection); Protecting the womb lining during estrogen therapy |
| Melatonin | Occasional trouble falling asleep; Jet lag | |
| Meloxicam | Mobic | Arthritis and joint pain; Acute musculoskeletal pain |
| Memantine | Namenda | Moderate to severe Alzheimer disease dementia; Added to cholinesterase inhibitors in Alzheimer disease |
| Meropenem | Merrem | Serious hospital infections of the abdomen, lungs, and skin; Meningitis (hospital) |
| Mesalamine | Lialda, Pentasa, Asacol | Ulcerative colitis; Crohn disease of the colon (some forms) |
| Metformin | Glucophage, Fortamet | Type 2 diabetes; Prediabetes, in selected patients on clinician advice |
| Methadone | Dolophine, Methadose | Treatment of opioid use disorder (in licensed programs); Severe chronic pain, on specialist advice |
| Methimazole | Tapazole | Overactive thyroid (hyperthyroidism); Graves disease |
| Methocarbamol | Robaxin | Muscle spasm from strains and injuries, short-term; Muscle spasm in hospital care (injection form) |
| Methotrexate | Trexall, Otrexup, Rasuvo | Rheumatoid arthritis and other autoimmune diseases; Psoriasis |
| Methylphenidate | Ritalin, Concerta | Attention deficit hyperactivity disorder (ADHD); Narcolepsy |
| Methylprednisolone | Medrol, Solu-Medrol | Severe allergic reactions; Asthma and COPD flare-ups |
| Metoclopramide | Reglan | Nausea and vomiting; Gastroparesis (slow stomach emptying in diabetes) |
| Metolazone | Zaroxolyn | Fluid buildup in heart failure; Fluid buildup in kidney disease, usually added to a loop water pill |
| Metoprolol | Lopressor, Toprol-XL | High blood pressure; Chest pain (angina) |
| Metronidazole | Flagyl | Bacterial vaginosis; Certain gut infections including C. difficile |
| Micafungin | Mycamine | Serious candida infections in hospital; Preventing yeast infections during stem cell transplant |
| Miconazole | Monistat, Micatin | Vaginal yeast infections; Athlete's foot, jock itch, and ringworm |
| Midazolam | Versed | Sedation for procedures and surgery; Prolonged seizures (hospital and rescue forms) |
| Midodrine | ProAmatine | Low blood pressure when standing; Low blood pressure during dialysis |
| Mifepristone | Mifeprex, Korlym | Medical abortion, combined with misoprostol, under a certified prescriber program; High blood sugar in Cushing syndrome (a different product) |
| Minocycline | Minocin, Solodyn | Acne; Certain skin and respiratory infections |
| Minoxidil | Rogaine, Loniten | Severe high blood pressure that has not responded to other medicines (tablets); Hair loss (applied to the scalp) |
| Mirabegron | Myrbetriq | Overactive bladder with urgency, frequency, and leakage; Neurogenic bladder in children (specific product) |
| Mirtazapine | Remeron | Depression; Poor appetite and insomnia in depressed patients, on clinician judgment |
| Misoprostol | Cytotec | Preventing stomach ulcers in people taking NSAIDs; Inducing labor and treating postpartum bleeding (hospital) |
| Molnupiravir | Lagevrio | COVID-19 in higher-risk outpatients when other treatments cannot be used; COVID-19 in adults at risk of severe illness, started early |
| Mometasone | Asmanex, Nasonex, Elocon | Daily asthma control (inhaler); Nasal allergies (spray) |
| Montelukast | Singulair | Asthma maintenance; Seasonal and year-round allergies |
| Morphine | MS Contin, Kadian | Moderate to severe pain; Severe breathlessness in palliative care, on specialist advice |
| Moxifloxacin | Avelox | Pneumonia; Sinus infections |
| Mupirocin | Bactroban | Impetigo and infected skin wounds; Eradicating staph bacteria from the nose before surgery or during outbreaks |
| Mycophenolate mofetil | CellCept | Preventing organ rejection after kidney, heart, and liver transplants; Lupus nephritis and other autoimmune diseases |
| Mycophenolic acid | Myfortic | Preventing organ rejection after kidney transplant; Preventing rejection in heart transplant (clinician-directed use) |
Please note: This page is a patient-education summary, not medical advice, and it deliberately contains no doses. Medicines affect everyone differently — always follow your own prescription and talk to your doctor or pharmacist before starting, stopping or changing any medicine.