Guanfacine HCL 1mg
Generic For: Intuniv
Guanfacine HCL 1mg is an alpha-2 adrenergic agonist tablet, available under the brand name Intuniv. It is used to treat attention-deficit/hyperactivity disorder (ADHD) and, in its immediate-release form, high blood pressure. After a licensed provider reviews your prescription, your medication ships directly from our licensed U.S. pharmacy.
Select Quantity *
100-day supply · $0.25/tablet
How It Works
- Select your medication
- Licensed providers review & prescribe
- Our licensed U.S. pharmacists fill your prescription
- Delivered to you as soon as the next day
Price: $25.00
HSA/FSA Eligible*Doctor visit fee & delivery cost not included in price. Refills at provider discretion.
Pharmacist Support
Fast Shipping
Licensed U.S. Pharmacy
Buy Guanfacine HCL 1mg Online (Intuniv)
An alpha-2 adrenergic agonist for ADHD and high blood pressure
Guanfacine HCL 1mg Quick Facts
| Drug class | Alpha-2 adrenergic agonist |
|---|---|
| Treats | ADHD, high blood pressure |
| Form | Tablet |
| Typical dosing | Take 1 tablet by mouth daily |
| Prescription required | Yes — prescription only |
What Is Guanfacine HCL 1mg?
Guanfacine HCL is a prescription medication in the alpha-2 adrenergic agonist class. The extended-release form (brand name Intuniv) is FDA-approved to treat ADHD in children and adolescents, either alone or alongside stimulant medications. The immediate-release form is approved to treat high blood pressure in adults. Guanfacine works by stimulating alpha-2A receptors in the brain, which is thought to improve attention and impulse control and to lower blood pressure by relaxing blood vessels.
What Does Guanfacine HCL 1mg Treat?
Attention-deficit/hyperactivity disorder (ADHD) in children and adolescents (extended-release)
ADHD as add-on therapy to stimulant medications (extended-release)
High blood pressure (hypertension) in adults (immediate-release)
Hypertension as monotherapy or with other antihypertensives (immediate-release)
Guanfacine HCL 1mg Dosage
Hypertension (immediate-release): 1 mg by mouth once daily at bedtime; may increase to 2 mg daily after 3–4 weeks if needed.
ADHD (extended-release, ages 6–17): 1 mg by mouth once daily; titrate by no more than 1 mg/week to 1–7 mg daily per label.
Take exactly as prescribed; do not stop abruptly.
Your prescriber will determine the dose and duration that are right for you. Always follow the directions on your prescription label.
Guanfacine HCL 1mg Side Effects
Common side effects
- Drowsiness or sedation
- Fatigue
- Dry mouth
- Dizziness
- Headache
- Constipation
- Low blood pressure
- Abdominal pain
Serious side effects
Stop taking this medication and seek medical attention right away if you experience:
- Fainting (syncope)
- Very slow heart rate (bradycardia)
- Severe low blood pressure
- Rebound high blood pressure if stopped abruptly
- Allergic reaction (rash, swelling, trouble breathing)
Warnings & Interactions
May cause significant drowsiness; use caution driving or operating machinery
Do not stop abruptly — taper to avoid rebound hypertension
May lower blood pressure and heart rate; use caution with heart conditions
Avoid alcohol and other CNS depressants, which can worsen sedation
CYP3A4 inhibitors/inducers (e.g., ketoconazole, rifampin) may require dose adjustment
Do not substitute extended-release and immediate-release tablets on a mg-for-mg basis
Contraindicated with known hypersensitivity to guanfacine
Tell your prescriber about all medications, supplements, and health conditions before starting guanfacine hcl 1mg.
Talk to U.S.-Based Support
Our licensed pharmacy team in Boca Raton, Florida — real people, no overseas call centers.