Medicines: M
Magnesium Sulfate (MgSO4) (Epsom Salt (USP))
Maropitant citrate (Cerenia, ZyVet, Emeprev)
Maropitant Citrate (Cerenia)
Melatonin (Natrol Melatonin, Nature Made Melatonin, K9 Choice Melatonin)
Melatonin (Ferretonin, Dermatonin)
Meloxicam (Metacam, Mobic)
Methimazole (Tapazole, Felimazole)
Methocarbamol (Robaxin, Robaxin-V)
Methylene Blue (Methylthioninium Chloride) (Kordon Methylene Blue, API Methylene Blue)
Metoclopramide (Reglan, Maxolon)
Metronidazole (Flagyl, Metizol)
Metronidazole (Seachem MetroPlex)
Mirtazapine (Mirataz)
Mirtazapine (Remeron)