November 26, 2015
Recommended Topic Related To:


"The U.S. Department of Health and Human Services today launched an annual challenge designed to identify and honor clinicians and health care teams that have helped their patients control high blood pressure and prevent heart attacks and strokes."...


(guanfacine hydrochloride) Tablets


Tenex (guanfacine hydrochloride) is a centrally acting antihypertensive with α2-adrenoceptor agonist properties in tablet form for oral administration.

The chemical name of Tenex (guanfacine hydrochloride) is N-amidino- 2-(2,6-dichlorophenyl) acetamide hydrochloride and its molecular weight is 282.56. Its structural formula is:

Tenex (guanfacine hydrochloride) Structural Formula Illustration

Guanfacine hydrochloride is a white to off-white powder; sparingly soluble in water and alcohol and slightly soluble in acetone. The tablets contain the following inactive ingredients:

1 mg - FD&C Red 40 aluminum lake, lactose, microcrystalline cellulose, povidone, stearic acid.

2 mg - D&C Yellow 10 aluminum lake, lactose, microcrystalline cellulose, povidone, stearic acid.

Last reviewed on RxList: 7/18/2013
This monograph has been modified to include the generic and brand name in many instances.

Report Problems to the Food and Drug Administration


You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.


Get tips on handling your hypertension.