Highlights
- Although guanfacine is not FDA-approved to treat anxiety, it may be prescribed for it off-label in certain situations.
- There is still limited research supporting the use of guanfacine for anxiety. The strongest evidence comes from studies done in children, while the studies in adults do not show a clear benefit for anxiety.
- Selective serotonin reuptake inhibitors (SSRIs) are still considered the most effective medications for most anxiety disorders and are typically prescribed before choosing guanfacine.
- Stopping guanfacine abruptly can cause a rebound rise in blood pressure. It should only be started, adjusted, or stopped under the guidance of a healthcare provider.
Anxiety is a common mental health condition among adults of all ages in the United States. According to
To treat anxiety, healthcare professionals may recommend attending therapy, taking medicines, or combining these approaches. In this article, we will discuss how the medication guanfacine works, how it can help those having an anxiety disorder, and its potential side effects. We will also look at the research that has been done on the effectiveness of guanfacine (Intuniv) in the treatment of anxiety.
What Is Guanfacine?
Guanfacine is a prescription medication that belongs to the class of centrally acting alpha-2A adrenergic receptor agonists. It works by decreasing the release of norepinephrine in the brain, helping to calm the nervous system.
Does Guanfacine (Intuniv) Help With Anxiety?
There have been some studies on using Intuniv for anxiety, but the research is mixed and the benefits mostly remain unproven in adults. Unlike first-line medications for anxiety disorders such as SSRIs and serotonin-norepinephrine reuptake inhibitors (SNRIs), guanfacine is not FDA-approved to treat anxiety. Current treatment guidelines generally do not recommend it as a routine anxiety medication because of the limited research supporting its effectiveness for anxiety in adults.
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Research in adults is even more limited. There have not been any studies specifically evaluating the effect of guanfacine (Intuniv) for anxiety in adults. Most studies have focused mainly on
ADHD and anxiety commonly occur together. In
How Might Guanfacine Affect Anxiety Symptoms?
Unlike SSRIs, which influence serotonin pathways tied to mood and anxiety, guanfacine works by
When you feel anxious, your nervous system activates the body’s “fight-or-flight” response, which can lead to symptoms such as:
- Racing thoughts
- Feeling constantly on edge
- Increased heart rate
- Restlessness
- Muscle tension
- Sleep problems
- Trouble concentrating
Guanfacine might help calm these symptoms in certain people, but it’s not commonly used for anxiety compared to medications specifically approved for it.
Who Might be Considered for Off-label Guanfacine Use?
Guanfacine isn’t typically the first choice for anxiety treatment. Your clinician may consider guanfacine for you in certain cases, such as:
- Comorbid anxiety and ADHD. Guanfacine may help address both symptoms in some people, although the choice of treatment is still highly personalized.
- Experiencing significant hyperarousal. This can lead to symptoms such as feeling constantly on edge, increased startle response, irritability, or difficulty relaxing.
- Having stimulant-related jitteriness or sleep problems. In someone who is experiencing certain side effects from their stimulant ADHD medication, guanfacine may be recommended.
- Difficulty tolerating standard anxiety medications. If you experience side effects or can’t tolerate SSRIs or benzodiazepines, guanfacine may be among the alternative options.
Your clinician can help determine if starting guanfacine is a suitable treatment decision for you.
Guanfacine Dosage for Anxiety
Because guanfacine isn’t FDA-approved for anxiety, there aren’t standard dosing recommendations. Instead, healthcare providers will generally follow the dosing recommendations for approved indications, such as ADHD, while adjusting treatment based on the patient’s response.
Intuniv dosing typically starts at 1 mg once daily. Starting with a low dose and gradually increasing it as needed helps reduce the risk of side effects. Doses can be increased up to a maximum of
Intuniv can be taken either in the morning or at night. Some people prefer morning dosing, while others feel that taking it in the evening helps prevent daytime drowsiness. Your healthcare provider can help determine the best schedule for you.
Intuniv is the form of guanfacine most often prescribed for anxiety. It is designed to release medication into the body gradually over time. Intuniv tablets shouldn’t be crushed or chewed. Tenex may also be used for anxiety, but it is different, as it releases medication into the body more quickly. This means the effects of the medication don’t last as long, and a once-daily dosing schedule may not be suitable. Common side effects such as sedation and a drop in blood pressure are more common with Tenex. Your healthcare provider will choose the formulation best for you based on your symptoms and treatment goals.
Guanfacine Side Effects and Safety
Like any medication, Intuniv can cause mild side effects, which should go away after a couple of weeks as your body adjusts to the medication.
Common
- Fatigue
- Drowsiness
- Dizziness
- Low blood pressure
- Nausea
- Increase in appetite
- Headache
- Dry mouth
- Irritability
- Constipation
- Stomach pain
Intuniv can also cause serious side effects. Contact your clinician immediately if you experience:
- Severe hypotension (low blood pressure)
- Fainting or severe dizziness
- Unusually slow heart rate
- Chest pain
- Skin rash or face swelling
Intuniv can interact with other blood pressure medications, sedatives, and alcohol, so it’s important to tell your healthcare provider about any other medications or supplements you are taking. Because Intuniv can affect your concentration and reaction time, do not drive or operate heavy machinery until you know how the medicine affects you.
Never stop taking Intuniv abruptly. Stopping abruptly can cause a rapid increase in blood pressure (known as rebound hypertension), especially in people taking higher doses or who have been taking it for a longer period of time. Other symptoms of withdrawal may include headaches, accelerated heart rate, nausea, chest tightness, or feelings of nervousness or unease. Talk with your clinician before stopping Intuniv. They can help you safely and gradually stop the medication.
If you’re using medications to manage your heartbeat, discuss this with your healthcare provider before taking Intuniv. They may need to adjust the dosage of some medications or prescribe you an alternate medicine.
Guanfacine vs Other Antianxiety Treatments
Selective Serotonin Reuptake Inhibitors
Compared with guanfacine, SSRIs have much more evidence supporting their efficacy for anxiety treatment. SSRIs like Zoloft (sertraline), Prozac (fluoxetine), and Lexapro (escitalopram) are considered first-line medications for generalized anxiety disorder, panic disorder, and social anxiety disorder. Multiple clinical trials show these medications reduce symptoms and improve long-term outcomes. Guanfacine has limited research for its use in anxiety, mostly from small pediatric studies and PTSD-related reports. These studies have not shown consistent symptom reduction.
Benzodiazepines
Benzodiazepines such as Xanax (alprazolam) are some common treatments, but carry risks of dependence, tolerance, and withdrawal, so they aren’t meant to be used long-term. While guanfacine doesn’t carry the same risks, it takes weeks to see any benefits, so it isn’t used to treat acute anxiety.
Guanfacine may be helpful in certain situations, such as in people with ADHD who also have symptoms of anxiety, sleep trouble, or emotional overreactivity, but the final decision depends on various individual factors and is at the discretion of a healthcare provider.
Bottom Line: How to Treat Anxiety?
Guanfacine is an off-label treatment for anxiety and has limited research supporting its use. However, it may be considered when anxiety overlaps with ADHD or when standard medications for anxiety haven’t worked well. If you think you may have an anxiety disorder, schedule an online visit with a healthcare provider at MEDvidi today. They can assess your symptoms and help choose the right treatment for you.
FAQs
Is Intuniv an SSRI?
Can guanfacine help with panic attacks?
There are no studies supporting the use of guanfacine for panic attacks. SSRIs or SNRIs remain the first-line options.
Is guanfacine good for social anxiety?
Guanfacine hasn’t been studied for social anxiety. Because social anxiety is typically driven by fear of judgment and avoidance rather than pure physiological arousal, it’s generally not considered an effective option. SSRIs or cognitive-behavioral therapy (CBT) are the standard first-line treatments for social anxiety.
Is guanfacine used for depression?
No, there is not enough evidence to support guanfacine for treating depression.
Can guanfacine cause or increase anxiety?
Guanfacine may cause an increase in certain anxiety symptoms as a side effect. Contact your healthcare provider if you experience severe, prolonged, or otherwise concerning adverse reactions.
