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Intuniv 1 mg Prolonged Release Tablets: Uses and Side Effects

Quick summary Intuniv 1 mg prolonged release tablets contain guanfacine and are used for ADHD. This article explains what they are used for, common side effects, and key safety points to review with a...

Educational content Use this article as a starting point for understanding the topic.
Check with a professional Ask a doctor or pharmacist before changing any medicine.
Safety first Side effects, interactions and risks depend on each person.
Medical disclaimer

This content is for educational purposes only and does not replace medical advice, diagnosis or treatment from a qualified healthcare professional.

Quick summary

Intuniv 1 mg prolonged release tablets contain guanfacine and are used for ADHD. This article explains what they are used for, common side effects, and key safety points to review with a healthcare professional or the patient leaflet.

Medical disclaimer: This page is for general information only and does not replace advice from a doctor, pharmacist, or the official product leaflet. Do not use it to diagnose a condition or to make medication changes.

What are Intuniv 1 mg prolonged release tablets?

Intuniv 1 mg prolonged release tablets are a prescription medicine used for ADHD. The active ingredient is guanfacine. It is a non-stimulant treatment option.

The prolonged release format is designed to release the medicine gradually over time. This is different from immediate release guanfacine, which is released more quickly.

What is Intuniv used for?

Intuniv is primarily prescribed for managing ADHD, especially in children and adolescents. It may help with attention, impulse control, and hyperactivity.

The original content also notes that it may be considered in some pediatric patients with oppositional defiant disorder. Whether it is suitable depends on the individual treatment plan set by the prescriber.

Because it is non-stimulant, Intuniv may be considered when stimulant medicines are not suitable or are not well tolerated.

How does guanfacine work?

Guanfacine acts on specific receptors in the brain. The original content describes this as helping improve focus and impulse control. Exact effects can vary from person to person.

If you are unsure why it has been prescribed, the best source of information is the prescriber or pharmacist who knows the treatment plan.

Is guanfacine safe in pregnancy?

The original content states that there is limited data on the effects of guanfacine during pregnancy. Because of this, pregnancy safety should be discussed with a healthcare professional.

If you are pregnant, planning a pregnancy, or think you may be pregnant, ask a clinician or pharmacist to review the benefits and risks using the official product information.

What are the side effects of Intuniv?

Like all medicines, Intuniv can cause side effects. The original content highlights the following common effects:

  • Drowsiness and fatigue
  • Dry mouth
  • Constipation
  • Headache
  • Low blood pressure, which may cause dizziness or fainting, especially when standing

It also notes that more serious effects can include bradycardia (a slow heart rate) and allergic reactions.

If any side effect feels severe, unusual, or worrying, seek medical advice promptly.

Guanfacine side effects: what to watch for

Some people may also notice mood changes, irritability, sleep disturbance, or gastrointestinal symptoms. The original content mentions that bowel changes can occur, including constipation and, in some cases, diarrhea.

Regular monitoring is important, especially for blood pressure and heart rate, because the medicine can affect both.

Best time of day to take guanfacine for ADHD

The original content says many healthcare providers suggest taking Intuniv in the evening to help reduce daytime drowsiness. For some people, bedtime dosing may be more comfortable.

Timing should always follow the prescriber’s instructions. If the timing is unclear, check the label or ask a pharmacist.

Guanfacine 1 mg immediate release vs prolonged release

Guanfacine is available in both immediate release and extended or prolonged release forms. The original content explains that immediate release is typically taken more often, while prolonged release provides a slower delivery of the medicine.

Which formulation is used depends on the treatment plan and the product prescribed.

Topic What the original content says
Main use ADHD, especially in children and adolescents
Active ingredient Guanfacine
Common side effects Drowsiness, fatigue, dry mouth, constipation, headache, low blood pressure
Important monitoring Blood pressure and heart rate
Pregnancy Limited data; discuss with a clinician

Why regular check-ups matter

The original content stresses the importance of regular medical check-ups while taking Intuniv. These visits help monitor blood pressure, heart rate, and any side effects.

They also give patients a chance to discuss other medicines they are taking, since interactions may need to be reviewed by a healthcare professional.

Safety reminder

Do not use this page to decide whether Intuniv is right for you. Always follow the instructions on the prescription label and the official leaflet, and speak to a doctor or pharmacist if you have questions about side effects, pregnancy, or other medicines.

Frequently asked questions

▸ What is Intuniv 1 mg used for?

Intuniv 1 mg prolonged release tablets are primarily used for ADHD. The original content also mentions possible use in some pediatric patients with oppositional defiant disorder.

▸ Is guanfacine safe in pregnancy?

The original content says there is limited data on guanfacine in pregnancy. A clinician should review the possible benefits and risks in each case.

▸ Can Intuniv cause diarrhea?

The original content notes that gastrointestinal effects can happen and includes diarrhea as a possible bowel change, although constipation is also listed.

▸ What are the common side effects of Intuniv?

Common side effects listed in the original content include drowsiness, fatigue, dry mouth, constipation, headache, and low blood pressure.

▸ Why are blood pressure checks important?

Intuniv can lower blood pressure and may also affect heart rate, so regular monitoring is important during treatment.

▸ What is the difference between immediate release and prolonged release guanfacine?

The original content explains that immediate release is taken more often, while prolonged release delivers the medicine more gradually.

Sources to verify

For the most accurate and up-to-date information, check the official patient leaflet or speak with a pharmacist or prescriber.

Editorial note Active Ingredients Online Editorial Team This article is prepared as educational medicine information for general readers. It is written to support understanding of active ingredients, medicine uses, possible side effects, precautions and safety-related questions.
Published: March 10, 2026 Updated: May 10, 2026 Educational content

Medical disclaimer

This content is for educational purposes only. It should not be used as a substitute for professional medical advice, diagnosis or treatment. Always ask a doctor, pharmacist or qualified healthcare professional before starting, stopping or changing any medicine.

Sources and verification

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Final note

Medicine information can change and may vary depending on country, product formulation, patient history and professional guidance. Always check official medicine information and ask a healthcare professional for personal medical questions.

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