Proper Use

Drug information provided by: Merative, Micromedex®

Take this medicine exactly as directed by your doctor. Do not take more of it, do not take it more often, and do not take it for a longer time than your doctor ordered.

This medicine should come with a Medication Guide. Read and follow these instructions carefully. Ask your doctor if you have any questions.

Start taking Grastek® at least 3 months before the expected onset of each grass pollen season, and continue taking this medicine daily throughout the pollen season. It may also be taken daily for 3 years to provide a sustained effect for a fourth year in which you do not have to take this medicine.

It is recommended to take the first dose of Grastek® in a clinic or hospital. This is to monitor you or your child for at least 30 minutes of any signs or symptoms of a severe allergic reaction. If you can tolerate the first dose of Grastek®, then you may take the succeeding doses at home.

To use:

  • Wash your hands before and after taking the tablet.
  • With dry hands, remove the tablet from the blister pack if you are ready to take it.
  • Place the tablet immediately under the tongue where it will dissolve for about 1 minute before swallowing.
  • Do not eat or drink anything for 5 minutes after taking the tablet.

Dosing

The dose of this medicine will be different for different patients. Follow your doctor's orders or the directions on the label. The following information includes only the average doses of this medicine. If your dose is different, do not change it unless your doctor tells you to do so.

The amount of medicine that you take depends on the strength of the medicine. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine.

  • For sublingual dosage form (tablets):
    • For grass pollen rhinitis:
      • Adults and children 5 to 65 years of age—One tablet (2800 BAU (bioequivalent allergy units)) once a day.
      • Children younger than 5 years of age—Use and dose must be determined by your doctor.

Missed Dose

If you miss a dose of this medicine, skip the missed dose and go back to your regular dosing schedule. Do not double doses.

  • If you forget to take more than one dose of this medicine, contact your doctor for instructions.

Storage

Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light. Keep from freezing.

Keep out of the reach of children.

Do not keep outdated medicine or medicine no longer needed.

Ask your healthcare professional how you should dispose of any medicine you do not use.

Portions of this document last updated: Feb. 01, 2024

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