Home > Drug > Grastek

Prescription required

Buy Grastek Online in Canada

Get your Grastek delivered at your door for FREE

Available Form:   Sublingual Tablet
Manufacturer name:   Alk Abello A/S
Generic name:   timothy-grass-desensitization
Strength:   2800u

What is Grastek?

Timothy grass allergenic extract belongs to the class of medications called allergy immunotherapies. It is used to decrease the symptoms of moderate to severe seasonal Allergies to Timothy grass and related grass pollens, when other allergy treatments have not been effective.

Grastek Price and Cost Calculator

Total no. of TABLET(S)

Insurance coverage

We accept all insurance plan

Estimated Copay


Drug cost


Dispensing fee


Delivery cost


Insurance coverage


**Actual price will depend on the insurance coverage in your province

Grastek frequently asked questions

Can I Get Same-Day Delivery?

Yes! We do provide same-day delivery in select areas. We do next business day delivery and can also ship overnight as well.

How Much is Shipping Cost for Grastek in Canada?

Shipping cost for Grastek to you in Canada is zero. Pocketpills offers FREE shipping anywhere in Canada to help you get access to treatment.

How to get Grastek delivered to my home?

You could get Grastek delivered at your doorstep from us in Canada if you ordered prescription medications with a valid prescription. If you are not sure if we deliver to your area, contact us.

How to get Grastek in Canada for free?

You can get Grastek for free in Canada if your health insurance provider covers it fully. Contact your provider or us to help you find out if you qualify to get Grastek for free.

Grastek How to Take

Timothy grass allergenic extract belongs to the class of medications called allergy immunotherapies. It is used to decrease the symptoms of moderate to severe seasonal Allergies to Timothy grass and related grass pollens, when other allergy treatments have not been effective. Before treatment with Timothy grass allergenic extract, your doctor will confirm your allergy with either a skin or a blood test.

Grastek (Timothy-grass-desensitization) works by causing the body's immune system to become less sensitive to the effects of the pollen. It may be started at any point during the year however, for symptoms to improve during the first allergy season, it should be started 8 to 12 weeks before the grass pollen season begins.

Grastek (Timothy-grass-desensitization) may be available under multiple brand names and/or in several different forms. Any specific brand name of Grastek (Timothy-grass-desensitization) may not be available in all of the forms or approved for all of the conditions discussed here. As well, some forms of Grastek (Timothy-grass-desensitization) may not be used for all of the conditions discussed here.

Your doctor may have suggested Grastek (Timothy-grass-desensitization) for conditions other than those listed in these drug information articles. If you have not discussed this with your doctor or are not sure why you are taking Grastek (Timothy-grass-desensitization), speak to your doctor. Do not stop taking Grastek (Timothy-grass-desensitization) without consulting your doctor.

Do not give Grastek (Timothy-grass-desensitization) to anyone else, even if they have the same symptoms as you do. It can be harmful for people to take Grastek (Timothy-grass-desensitization) if their doctor has not prescribed it.

Free Delivery

Your medication is delivered directly to you at no added cost. We even offer same-day delivery in select locations.

Grastek Dosage

The recommended dose for adults and children 5 years of age and older is 1 sublingual tablet containing 2800 Bioequivalent Allergy Units (BAU), dissolved under the tongue once daily.

Many things can affect the dose of medication that a person needs, such as body weight, other medical conditions, and other medications. If your doctor has recommended a dose different from the ones listed here, do not change the way that you are taking the medication without consulting your doctor.

To use Grastek (Timothy-grass-desensitization), with dry hands, remove the tablet from the foil packaging immediately before you use it. Place the tablet under your tongue and allow it to dissolve. Avoid swallowing for 1 minute to allow the medication to be absorbed through the skin in your mouth. Avoid eating or drinking anything for 5 minutes after taking the tablet and wash your hands after handling the medication.

It is important that Grastek (Timothy-grass-desensitization) be taken exactly as prescribed by your doctor.

If you miss a dose, skip the missed dose and continue with your regular dosing schedule. Do not take a double dose to make up for a missed one. If you are not sure what to do after missing a dose, contact your doctor or pharmacist for advice.

Store Grastek (Timothy-grass-desensitization) at room temperature, protect it from light and moisture, and keep it out of the reach of children. Keep Grastek (Timothy-grass-desensitization) in its original package until you are ready to use a dose.

Do not dispose of medications in wastewater (e.g. down the sink or in the toilet) or in household garbage. Ask your pharmacist how to dispose of medications that are no longer needed or have expired.

Grastek Side Effects

Many medications can cause side effects. A side effect is an unwanted response to a medication when it is taken in normal doses. Side effects can be mild or severe, temporary or permanent.

The side effects listed below are not experienced by everyone who takes Grastek (Timothy-grass-desensitization). If you are concerned about side effects, discuss the risks and benefits of Grastek (Timothy-grass-desensitization) with your doctor.

The following side effects have been reported by at least 1% of people taking Grastek (Timothy-grass-desensitization). Many of these side effects can be managed, and some may go away on their own over time.

Contact your doctor if you experience these side effects and they are severe or bothersome. Your pharmacist may be able to advise you on managing side effects.

  • allergy symptoms (e.g., runny nose, stuffy nose, itchy watery eyes)
  • asthma symptoms (e.g., wheezing, difficulty breathing, cough)
  • cough
  • dizziness
  • Dry Mouth
  • ear or eye itchiness
  • headache
  • Hives or itching all over body
  • mouth tingling, itching or swelling
  • swollen tongue
  • throat irritation
  • tiredness

Although most of the side effects listed below don't happen very often, they could lead to serious problems if you do not check with your doctor or seek medical attention.

Check with your doctor as soon as possible if any of the following side effects occur:

  • bleeding gums
  • blocked feeling in the ear
  • chest discomfort
  • enlarged glands
  • nose bleeds
  • stomach pain

Stop taking the medication and seek immediate medical attention if any of the following occur:

  • change of voice
  • signs of a serious allergic reaction (e.g., abdominal cramps, difficulty breathing, nausea and vomiting, or swelling of the face and throat)
  • throat tightness
  • trouble breathing
  • trouble swallowing

Some people may experience side effects other than those listed. Check with your doctor if you notice any symptom that worries you while you are taking Grastek (Timothy-grass-desensitization).

Personalized PocketPacks

We sort your medication into clearly labeled, individual packs so you can be sure you're taking the right dose at the right time.

Grastek Available Form

Each white to off-white circular sublingual tablet with a debossed, round detail on one side contains 2800 BAU (Bioequivalent Allergen Units) of standardized natural grass pollen extract of Timothy Grass (Phleum pretense). Nonmedicinal ingredients: gelatin NF (fish source) mannitol USP and sodium hydroxide NF.

Grastek Contraindications

Do not take Timothy grass allergenic extract if you:

  • are allergic to any non-medicinal ingredients of the medication
  • have previously had a Anaphylaxis (severe allergic reaction) to Timothy or related grass immunotherapy
  • have severe chronic or seasonal Asthma
  • are taking a medication in the β-blocker family
  • have sores, yeast infection or other inflammation in the mouth

Do not give Grastek (Timothy-grass-desensitization) to children less than 5 years of age.

Automatic Refills

We manage your refills and get in touch with your doctors for prescription renewals so that you always have the medication you need.

Grastek Precautions

Tell your doctor or prescriber about all prescription, over-the-counter (non-prescription), and herbal medications that you are taking. Also tell them about any supplements you take. Since caffeine, alcohol, the Nicotine from cigarettes, or street drugs can affect the action of many medications, you should let your prescriber know if you use them. Depending on your specific circumstances, your doctor may want you to:

  • stop taking one of the medications,
  • change one of the medications to another,
  • change how you are taking one or both of the medications, or
  • leave everything as is.

An interaction between two medications does not always mean that you must stop taking one of them. Speak to your doctor about how any drug interactions are being managed or should be managed.

Grastek Warnings

Before you begin using a medication, be sure to inform your doctor of any medical conditions or allergies you may have, any medications you are taking, whether you are pregnant or breast-feeding, and any other significant facts about your health. These factors may affect how you should use Grastek (Timothy-grass-desensitization).

Allergic Reactions: Some people who take Grastek (Timothy-grass-desensitization) experience a severe allergic reactions. Before you take Timothy grass allergenic extract, inform your doctor about any previous adverse reactions you have had to medications, especially medications used to treat grass allergies. Contact your doctor at once if you experience signs of an allergic reaction, such as skin rash, itching, difficulty breathing or swelling of the face and throat.

Milder allergic reactions such as hives, itching, mouth itchiness, runny nose and throat irritation can occur with the use of Grastek (Timothy-grass-desensitization). If these side effects become bothersome, discuss your concerns with your doctor.

Asthma: Grastek (Timothy-grass-desensitization) may cause asthma symptoms or cause existing asthma symptoms to worsen. If you have a history of asthma, discuss with your doctor how Grastek (Timothy-grass-desensitization) may affect your medical condition, how your medical condition may affect the dosing and effectiveness of Grastek (Timothy-grass-desensitization), and whether any special monitoring is needed. People with uncontrolled asthma should not use Grastek (Timothy-grass-desensitization).

First dose: Severe allergic reactions have occurred with the first dose of Grastek (Timothy-grass-desensitization). For this reason, the first dose should be taken at your doctor's office or a similar location where emergency treatment is available if the medication causes a severe reaction. Your doctor will likely want you to remain in the office for at least 30 minutes after taking the dose, to ensure that it does not cause a severe allergic reaction.

Pregnancy: Grastek (Timothy-grass-desensitization) should not be used during pregnancy unless the benefits outweigh the risks. If you become pregnant while taking Grastek (Timothy-grass-desensitization), contact your doctor immediately.

Breast-feeding: It is not known if Timothy grass allergenic extract passes into breast milk. If you are a breast-feeding mother and are taking Grastek (Timothy-grass-desensitization), it may affect your baby. Talk to your doctor about whether you should continue breast-feeding.

Children: The safety and effectiveness of using Grastek (Timothy-grass-desensitization) have not been established for children under 5 years of age. Children should be supervised for at least 30 minutes after taking each dose of Grastek (Timothy-grass-desensitization).

We're Here for You

Our pharmacists are happy to answer your questions. Get in touch by text, live chat, phone or email. We're standing by 7 days a week.


All material © 1996-2021 MediResource Inc. Terms and conditions of use. The contents herein are for informational purposes only. Always seek the advice of your physician or other qualified health providers with any questions you may have regarding a medical condition.

Reading is good for you...

Reading about what's good for you is even better.

Ozempic Vs. Mounjaro
Past TikTok hype: It's time to take GLP-1 medications seriously. This market is expected to reach $6 billion by 2031.
All about Ozempic

Related Drugs