Grastek (Timothy Grass Pollen Allergen Extract) is prescription medication used to treat Timothy (Phleum pratense) and related grass pollen allergies in patients.aged 5 to 65 years. It is an extract of certain plant pollens that used to relieve symptoms such as cough, itching/watery eyes, runny/stuffy nose, or sneezing cause your allergies. It works by making the body less sensitive to the pollens (such as grasses, ragweed) that cause the allergies. It should NOT be used for the immediate relief of allergic symptoms.
The first Grastek should only be taken in the doctor’s office. After taking the first dose, you or your child must retain in the doctor’s office for additional 30 minutes. The drug should be initiated 12 weeks before and throughout the season. Your children should take Grastek under adult supervision. Take exactly as prescribed.
We now supply the brand Grastek comes from Canada manufactured by Merck and also comes from United Kingdom manufactured by Alk-Abello. It comes with two dosage forms: sublingual (dissolve under the tongue) tablet 2800 BAU (bioequivalent allergy units)/tablet; Oral Lyophilisate (rapidly dissolving) 75000 SQ. Generic Grastek is currently unavailable.
The most common side effects of Grastek include:
• Mouth blisters;
• Swelling of mouth/tongue;
• Throat irritation;
If you suffer any serious side effects as below, please notify your doctor or pharmacist immediately.
• Cheat pain;
• Fast or irregular heartbeat;
• Throat swelling/tightness;
• Trouble breathing/swelling;
• Voice changes;
Do not take Grastek if you are allergic to Timothy Grass Pollen Allergen Extract or allergy shots or any ingredients in this medication. Tell your doctor about all the medical conditions you have had before.
• Ay allergies;
• Breathing problems such as asthma or COPD;
• Certain esophagus problem;
• Heart problems;
• High blood pressure;
• Immune system disease;
• Mouth irritation due to cold sore, ulcer, infection;
Tell your doctor about all the medicines you are taking including prescriptions and over-the-counter medicines including herbal supplements. Especially: allergen immunotherapy, antidepressants/antipsychotics, beta-blockers, diuretics, other allergy treatments, etc. This may change how your medications work or increase the risk for serious side effects. Consult your doctor if you are pregnant or breastfeeding.