Animal studies did not demonstrate evidence of fetal harm. It is important to discuss the risks and benefits of treatment with your doctor and caregivers. Guanfacine is usually taken one to two times per day. Guanfacine can be taken with or without food. However, taking it with a high fat meal can increase absorption and may increase exposure. The dose usually ranges from 1 mg to 4 mg per day.
Only your health care provider can determine the correct dose for you. Extended release tablets Intuniv should not be crushed, chewed or divided. Swallow the tablet whole. If you miss a dose of guanfacine take it as soon as you remember, unless it is closer to the time of your next dose. Discuss this with your healthcare provider. Do not double your next dose or take more than what is prescribed. Guanfacine may cause dizziness or drowsiness, especially when first starting the medication.
Make sure you know how you react to the medication before you drive, operate machinery, or participate in other activities that may be dangerous if you are not alert. Avoid drinking alcohol or using illegal drugs while you are taking this medication. They may decrease the benefits e. If an overdose occurs call your doctor or You may need urgent medical care. You may also contact the poison control center at Overdosing with guanfacine may cause sleepiness, dizziness, low blood pressure and slow heart rate.
It may take four to eight weeks to get the maximum benefit once the right dose is determined. However, improvements in some symptoms may occur sooner. Last Updated: January This information is being provided as a community outreach effort of the College of Psychiatric and Neurologic Pharmacists.
This information is for educational and informational purposes only and is not medical advice. This information contains a summary of important points and is not an exhaustive review of information about the medication.
The above is not a complete list of potential side effects. If you notice any health changes not listed above, discuss them with your doctor or pharmacist. Hello, What health issues should be checked before going on medication? I would like to visit my family doctor before I decide to get consultations on ADD medications. Thank you. You must be logged in to post a comment. It appears JavaScript is disabled in your browser. Please enable JavaScript and refresh the page in order to complete this form.
By William Dodson, M. Is there a difference between generic guanfacine and Intuniv? How do they compare? If a child misses two or more doses, the doctor may suggest restarting at the original 1-mg-per-day dosage and gradually increasing this to reach their regular dosage. Stopping the medication abruptly can also cause potentially dangerous side effects, including transient hypertension. The manufacturer advises slowly reducing the dosage by 1 mg every 3—7 days.
As with all medications, guanfacine can cause side effects. The most common side effects include :. It is important to discuss any unpleasant or concerning side effects with a doctor, who may recommend lowering the dosage or switching to an alternative treatment. Guanfacine may not be suitable for children with liver or kidney problems or those with a history of cardiovascular issues, such as low blood pressure or heart disease.
Doctors may regularly monitor the blood pressure and pulse of some children taking guanfacine to make sure that everything is normal. Guanfacine can also interact with antihypertensive medications, potentially causing low blood pressure or fainting.
Also, guanfacine may interact with alcohol or depressant medications — including benzodiazepines, barbiturates, and antipsychotics — leading to an increased sedative effect. Parents or caregivers can minimize the risk of drug interactions with guanfacine by informing the doctor about any medications or supplements that the child is currently taking.
Guanfacine is a nonstimulant drug option for the treatment of children with ADHD. A doctor may prescribe guanfacine if stimulant medications have proven ineffective or if parents or caregivers are concerned that they will cause harmful or unpleasant side effects. It is vital that children take guanfacine as the doctor directs to maximize its effectiveness and reduce the risk of side effects.
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