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Guanfacine ER Dosage

The typical starting dosage of guanfacine ER is 1 mg, taken once a day. The amount may be increased by no more than 1 mg per week, up to a maximum of 4 mg per day. The medicine should not be taken with a high-fat meal, and the tablets must be swallowed whole, not chewed or crushed.

An Introduction to Dosing With Guanfacine ER

The dose of guanfacine ER (Intuniv™) your child's healthcare provider recommends will vary, depending on a number of factors, including:
  • How your child responds to guanfacine ER
  • Other medications your child may be taking
  • Other medical conditions your child may have.
As is always the case, do not adjust the amount unless the healthcare provider specifically tells you to do so.

Guanfacine ER Dosage for ADHD

The usual starting guanfacine ER dose is 1 mg once daily. Your child's healthcare provider may gradually increase the amount in increments of no more than 1 mg per week, up to a maximum recommended dose of 4 mg per day.
If your child misses two or more dosages of guanfacine ER in a row, be sure to contact your child's healthcare provider before giving another dose. The healthcare provider may recommend that your child start back at the 1-mg dose and slowly increase the amount, as was done initially.
Children switching from short-acting guanfacine (Tenex®) should be started at the low dosage, with gradual increases, just like everyone else. There is no accurate and safe way to convert a Tenex dosage to a guanfacine ER dosage.
When stopping guanfacine ER, it is usually recommended to gradually taper the dose downward, by 1 mg every three to seven days. Stopping the medicine abruptly could cause temporary high blood pressure (hypertension).
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Guanfacine ER Drug Information

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