Intuniv(guanfacine extended-release tablets)is an α2A adrenergic receptor agonist used for attention-deficit/hyperactivity disorder(ADHD).Its administration time,swallowing method,and handling of missed doses directly affect efficacy and safety,and must be followed properly.

1.Once Daily:Morning or Bedtime?

1.Dosing frequency

This product is an extended-release formulation and only needs to be taken once daily to maintain stable blood drug concentrations.

Taking it at a fixed time helps establish a routine and reduces missed doses.

2.Choice between morning and bedtime dosing

The instructions do not mandate morning or bedtime administration;the specific time should follow the physician's advice.

If obvious drowsiness,fatigue,or dizziness occurs after dosing,consider switching to bedtime administration to reduce daytime drowsiness.

If insomnia or increased nighttime awakenings occur,morning administration is preferable to avoid affecting sleep.

Consult the physician before changing the administration time;do not change it frequently on your own.

3.Relationship with food

This product may be taken with food or on an empty stomach;food does not affect its extended-release properties.

It is recommended to keep a relatively consistent administration method each day to avoid fluctuations in blood drug concentrations.

2.Swallow Whole:Do Not Split,Chew,or Crush

1.Swallowing requirements

It must be swallowed whole with water and must not be split,chewed,or crushed.

If the extended-release tablet is broken,all the drug is released at once,which may cause adverse reactions such as a sudden drop in blood pressure and worsened drowsiness.

2.Handling of swallowing difficulties

If the patient cannot swallow the tablet whole,inform the physician,who will assess whether to change the dosage form or adjust the regimen.

Do not crush the tablet and mix it into food or liquid.

3.Precautions during administration

Do not lie down immediately after dosing;drink an appropriate amount of water to reduce the possibility of the tablet adhering to the esophagus.

Tablets should be kept out of the reach of children to avoid accidental ingestion.

3.Handling Missed Doses:Supplement Flexibly According to Timing

1.When remembered and far from the next dose

If the missed dose is remembered shortly after and there is still a long time until the next dose,take a supplementary dose as soon as possible.

After the supplementary dose,continue the next dose according to the original schedule.

2.When close to the next dose time

If it is already close to the next dose time,skip the missed dose and take the next dose at the original time.

Do not take a double dose at one time to avoid excessively low blood pressure,slow heart rate,or excessive sedation.

3.Consecutive missed doses

If doses have been missed for several consecutive days,do not double the dose on your own;contact the physician to reassess the medication regimen.

When resuming medication,it may be necessary to restart at a lower dose,especially after several days of discontinuation.

4.Recording and reminders

It is recommended to use a pillbox or mobile phone reminder to fix the daily administration time and reduce missed doses.

Truthfully inform the physician of missed doses during visits to facilitate judgment of efficacy and dose adjustment.