Guanfacine ER (Intuniv): can it be prescribed online?
Guanfacine ER — sold as Intuniv — is a non-stimulant medication for ADHD. It works completely differently from stimulants like Adderall, and it comes with one rule everyone should know: never stop it abruptly.
Stopping guanfacine ER abruptly can cause rebound hypertension — a sudden, dangerous spike in blood pressure — plus anxiety and agitation. If you need to stop, your prescriber will taper the dose down gradually. This applies even if you feel fine.
What is guanfacine ER?
Guanfacine is an alpha-2 adrenergic agonist — a drug class originally developed for high blood pressure. The extended-release (ER) form, Intuniv, is FDA-approved for ADHD in children and adolescents and widely prescribed off-label for adults. It calms the brain’s stress response and improves focus and impulse control through a different pathway than stimulants.
- Non-stimulant: not a controlled substance, no abuse potential
- Once-daily: the ER tablet releases the drug steadily through the day
- Often chosen when: stimulants cause too many side effects, tics are a concern, or evening calm is also a goal
Your psychiatrist determines the dose — it’s typically started low and adjusted gradually based on response and blood pressure readings.
Can I get guanfacine ER prescribed online?
Yes, in most cases. Because guanfacine ER is not a controlled substance, it doesn’t face the federal telehealth restrictions that apply to stimulant ADHD medications. A psychiatrist or psychiatric nurse practitioner licensed in your state can evaluate you over video and prescribe it where allowed, sending the prescription to your local pharmacy.
Expect blood pressure and heart rate checks during treatment — these can be done at a local clinic, pharmacy, or with a home cuff your prescriber reviews with you.
Find a psychiatrist near you
Compare real psychiatrists in the Austin area — verified credentials, honest availability.
Find a psychiatristWhat to expect if you’re prescribed guanfacine ER
Sleepiness is the most common effect
Drowsiness, fatigue, and sometimes dizziness are the most frequently reported side effects, especially in the first weeks. Many prescribers suggest taking it in the evening. Avoid driving or operating machinery until you know how it affects you.
Blood pressure and heart rate monitoring
Guanfacine lowers blood pressure and can slow heart rate. Your prescriber will want baseline readings and periodic checks. Report fainting, unusually slow pulse, or feeling lightheaded when standing.
It builds gradually
Unlike stimulants, which work the same day, guanfacine ER’s full effect develops over weeks as the dose is adjusted. Give it time and keep follow-up appointments — dose tuning is a normal part of the process.
The taper rule
Worth repeating: never stop abruptly. Rebound hypertension is the serious risk, and it can happen even after short courses. Any discontinuation should be a slow, clinician-supervised taper.
Frequently asked questions
Is guanfacine ER a stimulant?
No. It’s a non-stimulant — an alpha-2 agonist that works on different brain receptors than stimulants like Adderall or Vyvanse. It isn’t a controlled substance and carries no recognized abuse potential, which is why telehealth prescribing rules are simpler for it.
Why can’t I stop guanfacine suddenly?
Because your cardiovascular system adapts to the drug, abrupt withdrawal can cause rebound hypertension — blood pressure spiking above where it started — along with anxiety, agitation, and headache. Tapering down gradually lets your body readjust safely. Always stop under your prescriber’s guidance.
How is guanfacine ER different from clonidine ER?
Both are alpha-2 agonists for ADHD, but guanfacine is more selective for one receptor subtype, which generally means less sedation. Clonidine tends to be more sedating and is sometimes preferred when sleep is also a target. They’re not interchangeable — switching requires a prescriber’s plan.
Can guanfacine ER be prescribed online?
Yes. It’s not a controlled substance, so a state-licensed psychiatrist can prescribe it after a telehealth evaluation where allowed. Blood pressure monitoring during treatment can be handled locally or with a home cuff.
Does guanfacine ER help with sleep or tics?
Its calming, mildly sedating effect sometimes helps people who struggle with sleep, and prescribers occasionally use alpha-2 agonists as part of tic management. Whether that applies to you is a clinical judgment — bring it up with your psychiatrist rather than adjusting anything yourself.