Intuniv (Guanfacine) Prescriptions Available Online Today

Our doctors are here to help. Guanfacine can treat ADHD and more. Speak to one of our board-certified doctors to see if Guanfacine is right for you.

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An doctor at PlushCare can help you request a prescription online from your phone.

Can You Get Intuniv (Guanfacine) Online?

Yes, licensed medical doctors can prescribe Intuniv (Guanfacine) online after a medical evaluation.

You can speak with one of our online doctors to learn more about Intuniv. Book an online appointment with one of our top doctors using your phone or computer.

During your virtual visit, a physician will review your symptoms and medical history to provide a diagnosis. If the doctor determines that a patient would qualify for Intuniv, they can write a prescription and electronically send it to a nearby pharmacy for pickup.

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What Is Intuniv (Guanfacine)?

Guanfacine is a medication that is available in two forms that treat two very different conditions:

Hypertention (high blood pressure)

Attention Deficit Hyperactivity Disorder (ADHD)

Under brand name Tenex, guanfacine treats high blood pressure.

On the other hand, Intuniv is a long-acting version of guanfacine that is used for ADHD treatment

Either way, guanfacine is in a class of medications called centrally acting alpha2A-adrenergic receptor agonists.

1. Book

Visit with a doctor on your smartphone or computer.

2. Chat

Visit with a doctor on your smartphone or computer.

3. Pick up

We can send prescriptions to any local pharmacy or by mail.

How Does Guanfacine Work?

Guanfacine lowers blood pressure by decreasing heart rate and relaxing the blood vessels to allow blood to flow more easily through the body.

Guanfacine extended-release tablets may treat ADHD by affecting the part of the brain that controls impulsivity and attention.

Guanfacine Dosage and Treatment

Always follow your doctor’s dosage instructions.

Generally, the adult dose of guanfacine for treating high blood pressure is 1 mg orally once a day at bedtime. After three to four weeks, the dose can be increased to 2 mg. Adverse reactions increase significantly with doses above 3 mg per day.

The usual pediatric dose of extended-release guanfacine to treat ADHD is 1 mg, once per day, taken at the same time every day. The dosage may increase by up to 1 mg per week.

The maximum dosage will vary depending on the child’s size but shouldn’t exceed 7 mg per day. 

Benefits of Guanfacine

The regular version of guanfacine slows your heart rate and lowers blood pressure.

The extended-release version of guanfacine can treat symptoms of ADHD by:

  • Reducing distractibility
  • Improving working memory
  • Improving attention
  • Improving impulse control

Side Effects of Guanfacine

What are the side effects of guanfacine? Potential side effects of guanfacine include:

  • Weakness
  • Tiredness
  • Dry mouth
  • Irritability
  • Headache
  • Nausea
  • Vomiting
  • Constipation
  • Stomach pain
  • Decreased appetite
  • Decreased sexual ability
  • Rash
  • Blurred vision
  • Fainting
  • Slow heart rate

Considerations and Precautions of Guanfacine

While guanfacine is generally considered safe, it isn’t right for everybody. Make sure to tell your doctor about all the medications you take, including over-the-counter medications, vitamins, and supplements. Especially be sure to mention if you take any of the following:

  • Antihistamines
  • Antidepressants
  • Barbiturates like phenobarbital (Luminal)
  • Sedatives
  • Sleeping pills
  • Tranquilizers
  • Medications for anxiety, mental illness, nausea, high blood pressure, or seizures
  • Carbamazepine (Epitol, Carbatrol, Equetro, Tegretol)
  • Clarithromycin (Biaxin, in PrevPac)
  • Rifabutin (Mycobutin)
  • Itraconazole (Sporanox, Onmel)
  • Ketoconazole (Nizoral)
  • Nefazodone
  • Indinavir (Crixivan)
  • Nelfinavir (Viracept)
  • Phenytoin (Phenytek, Dilantin)
  • Pioglitazone (Actos, in Actoplus Met, in Oseni, in Duetact)
  • Rifampin (Rifadin, in Rifater, in Rifamate, Rimactane)
  • Ritonavir (Norvir, in Kaletra)
  • Valproic acid (Depakene)
  • St. John’s Wort

Always discuss your medical history with your doctor before starting any medication. Before starting guanfacine, tell your doctor if you have:

  • Ever fainted
  • Recently had a heart attack
  • Bipolar disorder
  • Ever had a stroke
  • Had liver, kidney, or heart disease
  • A slow heart rate
  • Low blood pressure

Also make sure to let your doctor know if you are pregnant, nursing, or planning on becoming pregnant. 

What Does Guanfacine Do for ADHD?

Guanfacine can help people with ADHD have improved impulse control, attention, and working memory. It may help reduce ADHD symptoms like being inattentive, impulsive, hyperactive, or disruptive. 

What Kind of Drug is Guanfacine?

Guanfacine is a centrally acting alpha2A-adrenergic receptor agonist.

Does Guanfacine Help Anxiety?

There is some evidence that extended-release guanfacine may help reduce symptoms of anxiety. However, guanfacine isn’t commonly used to treat anxiety.Take our anxiety quiz here.

Does Guanfacine Cause Anger?

Everybody reacts to medications differently. However, anger and irritability are not common side effects of guanfacine.

Can Guanfacine Help You Focus?

When used as directed, extended-release guanfacine can help people with ADHD to improve their focus.

What Does Guanfacine Do to the Brain?

Guanfacine stimulates alpha2 adrenergic receptors in the brain, which causes the blood vessels to widen and the heart rate to slow down.


Telehealth is not appropriate for serious conditions that require immediate attention or emergency care. If you experience any life-threatening issues, call 911 or go to an emergency room immediately.


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