Guanfacine, a fascinating research compound with its origins in the 1960s, has garnered attention due to its potential to address several health concerns. Let’s dig into the scientific definition, the captivating discovery, benefits, precautions, and even its mechanism.

What is Guanfacine?

Guanfacine is a research compound classified as an alpha-2 adrenergic agonist. Alpha-2 adrenergic agonists are drugs that activate specific receptors in the brain and peripheral nervous system. Guanfacine is primarily used for the management of attention deficit hyperactivity disorder (ADHD), but recent research has unveiled its potential in various other areas as well. (R)

The Discovery of Guanfacine

The discovery of Guanfacine traces back to the 1960s when scientists were investigating compounds that could modulate the adrenergic system. During this research, Guanfacine was identified as a potent alpha-2 adrenergic agonist with unique properties. Its ability to target specific receptors in the brain made it a subject of great interest among researchers.

Initially, Guanfacine prescription medications were primarily for hypertension, as they demonstrated effectiveness in reducing blood pressure. However, further exploration led to the discovery of other medications like ADHD. Clinical trials showed potential results, demonstrating improvements in attention span, impulsivity, and hyperactivity in subjects with ADHD. 

Over time, Guanfacine’s use expanded beyond ADHD, finding applications in conditions such as anxiety, post-traumatic stress disorder (PTSD), and Tourette’s syndrome. Its mechanism of action, which involves enhancing prefrontal cortex activity and modulating noradrenergic signaling, provides a foundation for its broad therapeutic potential.

While Guanfacine shows great promise, it is important to note that its history and use are not without controversy. Like any research compound, it has undergone rigorous testing, clinical trials, and safety assessments. However, responses to Guanfacine may vary, and its effectiveness and side effects should be considered on a case-by-case basis. (R)

Disclaimer: Before getting further into the Guanfacine advantages and uses, it’s vital to remember that this material is only for educational reasons. The scientific history presented here is based on available information and may only encompass some of the compound’s discovery and development aspects. 

Potential Benefits of Guanfacine 

Guanfacine is a research compound with promising potential in various areas:

Treatment for Attention Deficit Hyperactivity Disorder (ADHD)

Guanfacine has a long history of being used to treat ADHD symptoms. According to a study published in the Journal of the American Academy of Child & Adolescent Psychiatry, guanfacine significantly decreased impulsivity, hyperactivity, and reduced distraction in subjects with ADHD. Another study that was published in the Journal of Child and Adolescent Psychopharmacology demonstrated similar good results, highlighting the potential of guanfacine as a successful treatment strategy. (R) (R)

Anxiety Disorders

Research suggests that Guanfacine may offer benefits for subjects with anxiety disorders. A randomized controlled trial published in the Journal of Clinical Psychopharmacology investigated Guanfacine’s efficacy in adults with generalized anxiety disorder (GAD). The study found that Guanfacine reduced anxiety symptoms and improved overall functioning compared to a placebo. These findings indicate the compound’s potential as an adjunctive treatment for anxiety disorders. (R) (R)

Post-Traumatic Stress Disorder (PTSD)

Guanfacine has also shown promise in the management of PTSD symptoms. A study published in JAMA Psychiatry evaluated the use of Guanfacine in reducing anxiety and improving sleep quality in subjects with PTSD. The results demonstrated that Guanfacine reduced anxiety symptoms and improved overall sleep quality, suggesting its potential as a therapeutic option for PTSD patients. (R) (R)

Tourette’s Syndrome

Research studies have explored Guanfacine as a potential treatment for Tourette’s syndrome, a neurological disorder characterized by involuntary movements and vocalizations. A randomized controlled trial published in JAMA Neurology assessed the efficacy of Guanfacine in reducing tic severity in individuals with Tourette’s syndrome. The study found that Guanfacine significantly reduced tic frequency and severity compared to a placebo, offering hope for improved symptom management. (R) (R)


Guanfacine’s initial use was in the management of hypertension, where it has demonstrated efficacy in reducing blood pressure. Research studies have shown that Guanfacine can effectively lower both systolic and diastolic blood pressure, making it a valuable treatment option for individuals with hypertension. (R) (R)

Disclaimer: The information provided about the potential benefits of Guanfacine is based on available research and scientific studies. The potential benefits mentioned should not be interpreted as medical advice, dietary supplement, or a substitute for professional medication consultation. The information provided here is for educational purposes only and should not be relied upon as a sole source of information.

Key Features of Guanfacine

Product Type: Guanfacine Liquid
Purity: 98%
Variants: Available in liquid (30ml / 33mg per ml / 1000mg)

CAS Number: 29110-47-2
Molar Mass: 282.39 g/mol
Chemical Formula: C9H9Cl2N3O
IUPAC Name: N-(diaminomethylidene)-2-(2,6-dichlorophenyl)acetamide
Also known by Synonym: Tenex, Estulic, Intuniv (R)

How Does Guanfacine Work?

Guanfacine works through a specific mechanism of action that involves its interaction with alpha-2 adrenergic receptors in the brain and peripheral nervous system. By targeting these receptors, Guanfacine modulates the activity of norepinephrine, a neurotransmitter involved in various physiological processes. (R)

When Guanfacine binds to alpha-2 adrenergic receptors, it acts as an agonist, meaning it activates these receptors. This activation leads to a reduction in the release of norepinephrine, thereby decreasing its overall activity. By doing so, Guanfacine exerts its effects in the following ways:

Prefrontal Cortex Stimulation

Guanfacine’s activation of alpha-2 adrenergic receptors in the prefrontal cortex, a brain region associated with executive functions, enhances the release of norepinephrine and improves neuronal firing. This stimulation is believed to potentially contribute to the improvement in attention, impulse control, and working memory observed in conditions like ADHD.(R)

Noradrenergic Modulation

Guanfacine’s modulation of noradrenergic signaling plays a crucial role in its effects. By reducing the release of norepinephrine, Guanfacine helps to potentially regulate the balance of neurotransmitters in the brain. This modulation is thought to have a calming effect on neural activity, leading to reduced hyperactivity, impulsivity, and anxiety symptoms. (R)

Blood Pressure Regulation

Guanfacine’s initial use in the treatment of hypertension stems from its ability to potentially decrease sympathetic outflow from the central nervous system. Through its activation of alpha-2 adrenergic receptors in the brainstem, Guanfacine reduces the firing of neurons involved in regulating blood pressure, resulting in a decrease in peripheral vascular resistance and a subsequent lowering of blood pressure. (R)

Precautions to Consider

When considering Guanfacine, it’s essential to be aware of certain precautions. Here are some important points to keep in mind:

  • Follow Instructions: Read and follow the provided instructions or any accompanying documentation.
  • Research Purposes: Recognize that the compound is only for laboratory research use and should not be utilized for self-administration or other non-research reasons.
  • Expert Guidance: Seek advice from experienced researchers, scientists, or medical experts in the field. Their knowledge may assist in ensuring optimal application, dosage, and safety measures.
  • Regulatory Compliance: Search for regulatory compliance such as the Food and Drug Administration (FDA) that may apply to the usage of the compound.
  • Handling and Storage: To preserve the safety and integrity of the compound, observe correct handling practices and store it in a cool, dry place to maintain its stability and prevent degradation.
  • Safety and Disposal: Keep the compound out of reach of children to prevent accidental ingestion or exposure and follow recommended disposal methods. If you require immediate assistance or have concerns related to poisoning or toxic exposures, it is important to contact your local poison control center. 

Guanfacine has been approved by regulatory authorities in several countries for the treatment of various conditions. In the United States, it has been approved by the Food and Drug Administration (FDA) for the treatment of attention deficit hyperactivity disorder (ADHD) in children and adolescents. (R)

It is available as a generic medication, which means it is marketed under its chemical name rather than another brand name. Generic medications contain the same active ingredient as their brand-name counterparts and are subject to the same safety and effectiveness standards.

Potential Side Effects of Guanfacine

It is important to be aware of possible side effects associated with Guanfacine, despite its potential benefits. The most common side effects reported include fatigue, dizziness, dry mouth, constipation, headache, slowed heart rate, or mood changes. Serious side effects, high blood pressure, severe drowsiness, trouble breathing, and allergic reactions have been reported as potential reactions with Guanfacine. These symptoms may indicate a severe adverse reaction or sensitivity to the substance or other possible drug interactions. (R)


The brain and peripheral nervous system’s alpha-2 adrenergic receptors are affected by the research substance guanfacine. It has the potential for controlling symptoms of attention deficit hyperactivity disorder (ADHD), such as better focus and less impulsivity. Guanfacine has also been investigated for its possible advantages in the treatment of hypertension, Tourette’s syndrome, PTSD, and anxiety disorders. But it’s important to be aware of any adverse effects that can occur, including sleepiness, lethargy, dizziness, dry mouth, constipation, headache, low blood pressure, decreased heart rate, and mood swings.

Buy Guanfacine Online!

Regarding Nootropics and other research compounds, is among the most reliable and novel companies available. We offer targeted solutions with lab-tested purity for your specific needs. 


Please take note of the scientific applications of this product and carefully read our Terms and Conditions before purchasing You agree to abide by our Terms and Conditions by completing your order of the Guanfacine for sale and submitting payment. Please be aware that the product packaging may differ slightly from the images displayed on our website.

If for any reason you are not completely satisfied with the product you receive, please contact us at [email protected]. Our team is dedicated to ensuring customer satisfaction and will gladly assist you.