Drug information provided by: IBM Micromedex
In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For this medicine, the following should be considered:
Tell your doctor if you have ever had any unusual or allergic reaction to this medicine or any other medicines. Also tell your health care professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully.
Appropriate studies have not been performed on the relationship of age to the effects of guanfacine tablets in children younger than 12 years of age. Safety and efficacy have not been established.
Appropriate studies performed to date have not demonstrated pediatric-specific problems that would limit the usefulness of guanfacine extended-release tablets in children 6 years of age and older. Safety and efficacy have not been established in children younger than 6 years of age.
Appropriate studies on the relationship of age to the effects of guanfacine tablets have not been performed. No geriatric-specific problems have been documented to date, although the starting dose of guanfacine tablets is usually lower in elderly patients due to the higher risk of certain side effects.
Appropriate studies have not been performed on the relationship of age to the effects of guanfacine extended-release tablets in the geriatric population. Safety and efficacy have not been established.
There are no adequate studies in women for determining infant risk when using this medication during breastfeeding. Weigh the potential benefits against the potential risks before taking this medication while breastfeeding.
Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. When you are taking this medicine, it is especially important that your healthcare professional know if you are taking any of the medicines listed below. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.
Using this medicine with any of the following medicines is usually not recommended, but may be required in some cases. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.
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Using this medicine with any of the following medicines may cause an increased risk of certain side effects, but using both drugs may be the best treatment for you. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.
Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. Using alcohol or tobacco with certain medicines may also cause interactions to occur. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.
Other Medical Problems
The presence of other medical problems may affect the use of this medicine. Make sure you tell your doctor if you have any other medical problems, especially:
Bradycardia (slow heart rate), history of or
Heart attack, recent or
Heart block, history of or
Heart or blood vessel disease, history of or
Heart rhythm problems (eg, sinus node dysfunction, atrioventricular block) or
Hypotension (low blood pressure), history of or
Kidney failure or
Stroke, history of or
Syncope (fainting), history of—Use with caution. May make these conditions worse.
Kidney disease or
Liver disease—Use with caution. The effects may be increased because of slower removal of the medicine from the body.