• NEXICLON XR is the first and only FDA-approved once-daily oral clonidine for the treatment of hypertension.1
  • NEXICLON XR (clonidine) extended release tablets are indicated for the treatment of high blood pressure (hypertension.)2
  • NEXICLON XR may be prescribed alone or with other medicines to treat hypertension.2
  • NEXICLON XR tablets gradually release clonidine over the course of the day.

Contraindications: Patients who are allergic to clonidine should not take NEXICLON XR.

What is clonidine?3

Clonidine is an antihypertensive medicine that lowers blood pressure and heart rate by relaxing the arteries and increasing the blood supply to the heart. Clonidine has been used by physicians to control high blood pressure in patients for more than 40 years.


  1. U.S. Food & Drug Administration. Orange Book: Approved Drug Products with Therapeutic Equivalence Evaluations. Accesses August, 1, 2021.
  2. NEXICLON XR [prescribing information]. Athens, GA: Athena Bioscience LLC; 2021.
  3. National Institutes of Health. https://www.ncbi.nlm.nih.gov/books/NBK459124/. Accessed March 16, 2021.

Important Safety Information

NEXICLON™ XR (clonidine) Extended-Release Tablets is indicated in the treatment of hypertension. NEXICLON XR may be employed alone or concomitantly with other antihypertensive agents.



NEXICLON XR should not be used in patients with known hypersensitivity to clonidine (rash, angioedema, hives).

Warnings and Precautions

Patients should not discontinue therapy without consulting a physician. Dose reduction should be performed gradually over a 2- to 4-day period to avoid withdrawal symptomatology. Rare instances of hypertensive encephalopathy, cerebrovascular accidents, and death have been reported after clonidine withdrawal.

Monitor carefully and titrate slowly in patients with severe coronary insufficiency, conduction disturbances, recent myocardial infarction, cerebrovascular disease, or chronic renal failure.

Patients who engage in potentially hazardous activities, such as operating machinery or driving, should be advised of a possible sedative effect of clonidine.

In perioperative use, NEXICLON XR may be administered up to 28 hours prior to surgery and resumed the following day.

Adverse Reactions

There is very little experience with NEXICLON XR in controlled trials. Based on this limited experience, the adverse event profile of NEXICLON XR appears similar to that of immediate release clonidine formulation. The most commonly expected adverse reactions are dry mouth, drowsiness, and dizziness.

Drug Interactions

No drug interaction studies have been conducted with NEXICLON XR; however the following have been reported with other oral formulations of clonidine:

  • Clonidine may potentiate the CNS-depressive effects of alcohol, barbiturates, or other sedating drugs.
  • Tricyclic antidepressants may reduce the hypotensive effect of clonidine, necessitating an increase in clonidine dose.
  • Sinus bradycardia resulting in hospitalization and pacemaker insertion has been reported in association with the use of clonidine concomitantly with diltiazem or verapamil.

Use in Specific Populations

  • Pregnancy Category C. Clonidine is secreted in human milk.
  • Safety and effectiveness in pediatric patients have not been established.
  • Dose may need adjustment in patients with renal impairment.
  • Elderly patients may benefit from a lower initial dose.

Please see Full Prescribing Information for additional product information.

You are encouraged to report negative side effects of prescription drugs to Athena Bioscience, LLC at 1-833-874-2664 or to the FDA. Visit www.fda.gov/medwatch, or call 1-800-FDA-1088.