Uniphyl (theophylline, anhydrous) Tablets in a controlled-release system allows a 24-hour dosing interval for appropriate patients. Theophylline is structurally classified as a methylxanthine. It occurs as a white, odorless, crystalline powder with a bitter taste. Anhydrous theophylline has the chemical… Continue Reading


Urocit-K is a citrate salt of potassium. Its empirical formula is KCHO • HO, and it has the following chemical structure: Urocit-K yellowish to tan, oral wax-matrix tablets, contain 5 mEq (540 mg) potassium citrate, 10 mEq (1080 mg) potassium… Continue Reading


ULORIC (febuxostat) is a xanthine oxidase inhibitor. The active ingredient in ULORIC is 2-[3-cyano-4-(2-methylpropoxy) phenyl]-4-methylthiazole-5-carboxylic acid, with a molecular weight of 316.38. The empirical formula is CHNOS. The chemical structure is: Febuxostat is a non-hygroscopic, white crystalline powder that is… Continue Reading


ULTRACET (tramadol hydrochloride/acetaminophen) Tablets combines two analgesics, tramadol 37.5 mg and acetaminophen 325 mg. The chemical name for tramadol hydrochloride is (±)-2-[(dimethylamino)methyl]-1-(3-methoxyphenyl) cyclohexanol hydrochloride. Its structural formula is: The molecular weight of tramadol hydrochloride is 299.84. Tramadol hydrochloride is a… Continue Reading


ULTRAM ER (tramadol hydrochloride) is a centrally acting synthetic analgesic in an extended-release formulation. The chemical name is (±) cis-2-[(dimethylamino)methyl]-1-(3-methoxyphenyl) cyclohexanol hydrochloride. Its structural formula is: Figure 1 The molecular weight of tramadol HCl is 299.8. It is a white,… Continue Reading


Ursodiol is a bile acid available as 300 mg capsules suitable for oral administration. Ursodiol USP (ursodeoxycholic acid) is a naturally occurring bile acid found in small quantities in normal human bile and in the biles of certain other mammals.… Continue Reading


Each UROXATRAL extended-release tablet contains 10 mg alfuzosin hydrochloride as the active ingredient. Alfuzosin hydrochloride is a white to off-white crystalline powder that melts at approximately 240°C. It is freely soluble in water, sparingly soluble in alcohol, and practically insoluble… Continue Reading