Melphalan(Sarcolysin; L-PAM) is a chemotherapy drug belonging to the class of nitrogen mustard alkylating agents; attaches the alkyl group to the guanine base of DNA.

Mestranol

Metformin HCl(Glucophage)

Methacycline HCl (Physiomycine)

Methimazole(Tapazole, Northyx) is an antithyroid medicine.

Methocarbamol is a central muscle relaxant used to treat skeletal muscle spasms.

Methotrexate(WR19039; CL14377) can interfere with the growth of certain cells of the body, especially cells that reproduce quickly, such as cancer cells, bone marrow cells, and skin cells.

Methoxsalen (Oxsoralen)

Methylprednisolone

Metolazone (Zaroxolyn)

Metoprolol is a cardioselective β1-adrenergic blocking agent.

Mevastatin (Compactin; ML236B) inhibits HMGCR (HMG-CoA reductase) (Ki for acid form is 1 nM) which in turn inhibits isoprenoid biosynthesis and therefore blocks protein isoprenylation and reduces plasma cholesterol levels in humans.

Mexiletine hydrochloride is a non-selective voltage-gated sodium channel blocker; Class IB anti-arrhythmic compound.

Miglitol (Glyset)

Milbemycin oxime is a semi-synthetic macrocyclic lactone prepared by the oxidation and oximation of a mixture of two natural products, milbemycin A3 and A4 (in ~70: 30 ratio). Moxidectin oxime, marketed as Interceptor, is used therapeutically for the prev

Milnacipran inhibits both norepinephrine transporter (NET) and norepinephrine transporter (SERT) with IC50 of 77 nM and 420 nM, respectively.

Minoxidil(U 10858) is an antihypertensive vasodilator medication.

Miriplatin

Mirtazapine (Remeron, Avanza)

Mitotane (Lysodren)

Mitoxantrone HCl

Moguisteine is a novel peripheral non-narcotic antitussive drug.