药物信息为QUIBRON -T (Theophylline Tablets USP) ACCUDOSE TabletsIMMEDIATE-RELEASE BRONCHODILATOR (Monarch Pharmaceuticals, Inc.): Description

Theophylline is structurally classified as a methylxanthine. It occurs as a white, odorless, crystalline powder with a bitter taste. Anhydrous theophylline has the chemical name 1HPurine- 2,6-dione, 3,7-dihydro-1,3-dimethyl-, and is represented by the following structural formula:

The molecular formula of anhydrous theophylline is C₇H₈N₄O₂ with a molecular weight of 180.17.

Quibron^®-T is available as tablets intended for oral administration, containing 300 mg of anhydrous theophylline per tablet. Quibron^®-T is an oral bronchodilator in an immediate-release formulation in the ACCUDOSE^® Tablet design. With functional trisects and bisects, Quibron^®-T Tablets can be accurately divided into 100-, 150-, and 200-mg segments to provide a variety of dosing increments, as required.

QUIBRON^®-T TABLETS

	One-third tablet	= 100 mg
	One-half tablet	= 150 mg
	Two-thirds tablet	= 200 mg
	One tablet	= 300 mg

Inactive Ingredients: microcrystalline cellulose, yellow ferric oxide, hydroxypropyl methylcellulose 2910, lactose monohydrate, magnesium stearate, colloidal silicon dioxide, and sodium starch glycolate.