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guanfacine (cont.)

What should I discuss with my healthcare provider before taking guanfacine (Intuniv, Tenex)?

You should not use this medication if you are allergic to guanfacine.

To make sure you can safely take guanfacine, tell your doctor if you have any of these other conditions:

  • heart disease or heart block;
  • coronary artery disease or a history of stroke;
  • low blood pressure;
  • kidney disease;
  • liver disease; or
  • if you have recently had a heart attack.

FDA pregnancy category B. This medication is not expected to be harmful to an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant during treatment.

It is not known whether guanfacine passes into breast milk or if it could harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby.

How should I take guanfacine (Intuniv, Tenex)?

Take exactly as prescribed by your doctor. Do not take in larger or smaller amounts or for longer than recommended. Follow the directions on your prescription label.

Your doctor may occasionally change your dose to make sure you get the best results.

If you take Intuniv to treat ADHD, take your dose in the morning.

If you take Tenex to treat hypertension, you may need to take your dose at bedtime if guanfacine causes severe drowsiness. Follow your doctor's instructions.

Do not crush, chew, or break an Intuniv extended-release tablet. Swallow the pill whole. Breaking the pill may cause too much of the drug to be released at one time.

If there are any changes in the brand, strength, or type of guanfacine you use, your dosage needs may change. Always check your refills to make sure you have received the correct brand and type of medicine prescribed by your doctor. Ask the pharmacist if you have any questions about the medicine you receive at the pharmacy.

To be sure this medication is helping your condition and not causing harmful effects, your doctor will need to check your progress on a regular basis. Your blood pressure and heart rate may also need to be checked. Do not miss any follow-up visits to your doctor.

Do not stop taking this medication without first talking to your doctor. If you stop taking guanfacine suddenly, your condition may become worse and you could have unpleasant symptoms.

If you are being treated for high blood pressure, keep using this medication even if you feel fine. High blood pressure often has no symptoms. You may need to use blood pressure medication for the rest of your life.

Store at room temperature away from moisture, heat, and light.

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.

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