medroxyprogesterone
A synthetic progesterone C₂₂H₃₂O₃ that is administered by injection as a long-acting contraceptive or is taken orally especially to treat amenorrhea and abnormal uterine bleeding and in conjunction with estrogen to relieve the symptoms of menopause and prevent osteoporosis.

mefeclorazine
A sedative and hypnotic drug.

mefenidil
A vasodilator.

mefloquine
An antimalarial drug C₁₇H₁₆F₆N₂O similar to quinine that consists of a fluorinated derivative of quinoline and is used in the form of its hydrochloride for the prevention and treatment of malaria.

mefruside
A diuretic.

megatrial
A very large trial (of a pharmaceutical etc), sometimes made up of several normal trials.
A major or large-scale legal trial.

megatrials
plural of megatrial

megestrol
A steroidal progestin.

meglitinide
Any of a class of drugs used to treat type 2 diabetes.
A chemical compound which is the prototype of this drug class (see drawing).

meglitinides
plural of meglitinide

meladrazine
A drug used in urology as an antispasmodic.

melagatran
An anticoagulant drug.

melarsomine
melaminylthioarsenate, a trypanocidal agent

meldonium
A drug used to treat ischemia, sometimes illicitly used by athletes to enhance performance.

melengestrol
A steroidal progestin and antineoplastic.

menabitan
A synthetic drug which acts as a potent cannabinoid receptor agonist.

menadiol
The dihydric alcohol formed by reduction of menadione.

menadione
A synthetic yellow compound C₁₁H₈O₂ with the biological activity of natural vitamin K menaquinone, used to treat hemorrhage.

menadiones
plural of menadione

menaquinone
A pale yellow crystalline naphthoquinone C₄₁H₅₆O₂ that is obtained especially from putrefied fish meal and produced by bacteria in the large intestine and essential for the blood-clotting process. It is much more unsaturated than vitamin K₁ and slightly less active biologically, and is an isoprenoid derivative of menadione.

menaquinones
plural of menaquinone

menedione
Misspelling of menadione.

menitrazepam
A benzodiazepine drug.

menoquinone
Misspelling of menaquinone.

mepacrine
Synonym of quinacrine.

meperidine
The United States Adopted Name of pethidine.

meperidines
plural of meperidine

mephenytoin
An anticonvulsant drug C₁₂H₁₄N₂O₂.

mephobarbital
The United States Adopted Name of methylphenobarbital.

mepiprazole
A phenylpiperazine tranquilizer.

mepivacaine
A local anesthetic derived from piperidine and similar in structure and action to lidocaine, usually given by injection as the hydrochloride; (1-methyl-2-piperidyl)formo-2′,6′-xylidide, C₁₅H₂₂N₂O.

mepivicaine
Misspelling of mepivacaine.

mepolizumab
A humanized monoclonal antibody that recognizes interleukin-5 and is used to treat certain kinds of asthma and white blood cell diseases.

meprednisone
A glucocorticoid, a methylated derivative of prednisone.

meprin
A sedative that is used to treat anxiety etc.

meprins
plural of meprin

meprobamate
A carbamate derivative used as an anxiolytic drug.

meprobamates
plural of meprobamate

meprylcaine
A local anesthetic.

mequinol
A drug used in combination with tretinoin in the treatment of liver spots.

mercaptoguanine
Synonym of thioguanine.

mercaptohistidine
A thiol that is a histidine derivative.

mercaptohistidines
plural of mercaptohistidine

mercaptopurine
An thiol antimetabolite C₅H₄N₄S that interferes especially with the metabolism of purine bases and the biosynthesis of nucleic acids and that is sometimes used in the treatment of acute leukemia.

mercaptopurines
plural of mercaptopurine

mercurial
Any of the plants known as mercury, especially the annual mercury or French mercury (Mercurialis annua).
A person born under the influence of the planet Mercury; hence, a person having an eloquent, quickwitted, furtive, or volatile character.
A chemical compound containing mercury.
A preparation of mercury, especially as a treatment for syphilis.

mercurialls
plural of mercuriall; obsolete spelling of mercurials.

mercurials
plural of mercurial

mereletinib
The drug osimertinib.

meribendan
A cardiotonic drug.

mersalyl
An organomercury compound occasionally used as a diuretic.

mertiatide
Mercaptoacetyltriglycine, a contrast agent used in a technetium-labeled form for medical imaging of the kidneys.

mesalamine
The drug mesalazine.

mesalazine
The active antiinflammatory component of sulfasalazine, 5-aminosalicylic acid, when used in the treatment of inflammatory bowel disease.

meseclazone
A nonsteroidal anti-inflammatory drug.

mesilate
A salt or ester of an acid CH₄O₃S used especially in pharmaceutical preparations.

mesilates
plural of mesilate

mesoridazine
A phenothiazine tranquilizer C₂₁H₂₆N₂OS₂ used formerly especially in the treatment of schizophrenia and anxiety.

mespirenone
A potassium-sparing diuretic.

mestanolone
An androgenic steroid.

mesterolone
An androgen.

mestranol
A synthetic estrogen used chiefly in oral contraceptives, in combination with a progestational agent; the 3-methyl ether of ethinylestradiol, C₂₁H₂₆O₂.

mesudipine
A calcium channel blocker.

mesulergine
A psychoactive drug.

mesuximide
An anticonvulsant drug C₁₂H₁₃NO₂ used especially in the control of absence seizures.

mesylate
Alternative form of mesilate.

mesylates
plural of mesylate

metacholine
Misspelling of methacholine.

metadoxine
A drug used to treat alcohol intoxication

metafane
Synonym of methoxyflurane.

metaglinides
Misspelling of meglitinides.

metallodrug
Any of several pharmaceuticals that contain metals such as silver or platinum; especially such anticancer drugs

metallodrugs
plural of metallodrug

metallopharmaceutical
A pharmaceutical containing metal.

metallopharmaceuticals
plural of metallopharmaceutical

metelimumab
A human monoclonal antibody intended for the treatment of scleroderma but later dropped in favour of alternatives.

metergoline
A synthetic compound with the chemical formula C₂₅H₂₉N₃O₂, used as an antagonist.

metergolines
plural of metergoline

metformin
A biguanide derivative, C₄H₁₁N₅, used, now chiefly as the hydrochloride, as an oral hypoglycemic agent in the treatment of type 2 diabetes mellitus; 1,1-dimethylbiguanide.

metformins
plural of metformin

methacholine
A choline derivative with parasympathomimetic activity that can induce bronchoconstriction in asthmatics and is used in tests of airway responsiveness; O-acetyl-β-methylcholine, C₈H₁₈NO₂⁺.

methadon
Alternative form of methadone.

methadone
A powerful synthetic analgesic drug which is similar to morphine in its effects but less sedative and is used as a substitute drug in the treatment of morphine and heroin addiction.

methadones
plural of methadone

methadons
plural of methadon

methallenestril
A synthetic, non-steroidal estrogen formerly used to treat menstrual problems.

methallenestrol
Alternative form of methallenestril.

methallenoestril
Alternative form of methallenestril.

methaminodiazepoxide
Synonym of chlordiazepoxide.

methandriol
An androstenediol with molecular formula C₂₀H₃₂O₂.

methaqualone
A sedative drug that has effects similar to barbiturates, also used recreationally.

methaqualones
plural of methaqualone

metharbital
An anticonvulsant barbiturate C₉H₁₄N₂O₃.

methcathinone
α-methylamino-propiophenone, a psychoactive stimulant sometimes used as a recreational drug.
A derivative of α-methylamino-propiophenone, such as fluoromethcathinone.

methcathinones
plural of methcathinone

methestrol
A synthetic non-steroidal estrogen of the stilbestrol group.

methisergide
Misspelling of methysergide.

methoestrol
Alternative form of methestrol.

methohexital
A derivative of barbituric acid, used, as the sodium salt (more fully sodium methohexital), as a short-acting intravenous anesthetic; (1-methyl-5-allyl-5-[1-methyl-2-pentynyl])barbituric acid, C₁₄H₁₈N₂O₃.

methohexitone
methohexital

methoserpidine
An antihypertensive drug related to reserpine.