Thyroid hormone drugs are natural or synthetic preparations containing tetraiodothyronine (T4, levothyroxine) sodium or triiodothyronine (T3, liothyronine) sodium or both. T4 and T3 are produced in the human thyroid gland by the iodination and coupling of the amino acid tyrosine.… Continue Reading


Lindane Lotion USP, 1%, is an ectoparasiticide and ovicide. In addition to the active ingredient, lindane, it contains 2-amino-2-methyl-1-propanol, butylparaben, carrageenan, cetyl alcohol, glyceryl monostearate, methylparaben, perfume compound, purified water, stearic acid and triethanolamine to form a lotion. The pH… Continue Reading


Leuprolide acetate is a synthetic nonapeptide analog of naturally occurring gonadotropin releasing hormone (GnRH or LH-RH). The analog possesses greater potency than the natural hormone. The chemical name is 5- oxo -L-prolyl-L-histidyl-L-tryptophyl-L-seryl-L-tyrosyl-D-leucyl-L-leucyl-L-arginyl-N-ethyl-L-prolinamide acetate (salt) with the following structural formula: LUPRON… Continue Reading


Lac-Hydrin specially formulates 12% lactic acid, neutralized with ammonium hydroxide, as ammonium lactate to provide a lotion pH of 4.4-5.5. Lac-Hydrin (ammonium lactate) Lotion 12% also contains cetyl alcohol, fragrance, glycerin, glyceryl stearate, laureth-4, light mineral oil, magnesium aluminum silicate,… Continue Reading

lisinopril and hydrochlorothiazide

Lisinopril and hydrochlorothiazide combines an angiotensin converting enzyme inhibitor, lisinopril, and a diuretic, hydrochlorothiazide. Lisinopril, a synthetic peptide derivative, is an oral long-acting angiotensin converting enzyme inhibitor. It is chemically described as ()-1-[-(1-carboxy-3-phenylpropyl)–lysyl]–proline dihydrate. Its molecular formula is CHNO•2HO and… Continue Reading

Labetalol Hydrochloride

Labetalol HCl is an adrenergic receptor blocking agent that has both selective alpha- and nonselective beta-adrenergic receptor blocking actions in a single substance. Labetalol HCl is a racemate, chemically designated as 5-[1-hydroxy-2-[(1-methyl-3-phenylpropyl) amino] ethyl] salicylamide monohydrochloride, and has the following… Continue Reading


Lioresal, baclofen USP, is a muscle relaxant and antispastic, available as 10-mg and 20-mg tablets for oral administration. Its chemical name is 4-amino-3-(4-chlorophenyl)- butanoic acid, and its structural formula is Baclofen USP is a white to off-white, odorless or practically… Continue Reading


LIVOSTIN™ 0.05% (levocabastine hydrochloride ophthalmic suspension) is a selective histamine H-receptor antagonist for topical ophthalmic use. Each mL contains 0.54 mg levocabastine hydrochloride equivalent to 0.5 mg levocabastine; 0.15 mg benzalkonium chloride; propylene glycol; polysorbate 80; dibasic sodium phosphate, anhydrous;… Continue Reading


Lorazepam, a benzodiazepine with antianxiety, sedative, and anticonvulsant effects, is intended for the intramuscular or intravenous routes of administration. It has the chemical formula: 7-chloro-5 (2-chlorophenyl)-1,3-dihydro-3-hydroxy-2-1,4-benzodiazepin-2-one. The molecular weight is 321.16, and the C.A.S. No. is [846-49-1]. The structural formula… Continue Reading