Overview

Timothy grass is a cool-season variety of grass. Many people are allergic to the pollen from timothy grass.

People use prescription products that contain timothy grass pollen in small doses to reduce seasonal allergy (hay fever) symptoms.

How does it work ?

Timothy grass pollen in very small doses is thought to desensitize the body to grass pollen allergies.

Timothy grass pollen in very small doses is thought to desensitize the body to grass pollen allergies.

Uses & Effectiveness ?

Likely Effective for

  • Hay fever. Prescription timothy grass products reduce hay fever symptoms in people with allergies and asthma. Non-prescription products have not been studied for this purpose and are not expected to help.

Insufficient Evidence for

More evidence is needed to rate the effectiveness of timothy grass for these uses.

Side Effects

When applied under the tongue: Prescription timothy grass pollen extract is POSSIBLY SAFE for most adults when used appropriately. It can cause itching and irritation of the mouth and nose, blisters in the mouth, and runny nose. There isn't enough reliable information to know if non-prescription products are safe or what the side effects might be.

When injected under the skin: Timothy grass pollen extract is POSSIBLY SAFE for most adults when injected by a healthcare professional. It can cause irritation where the needle entered the skin. But using timothy grass pollen extract at very high doses is POSSIBLY UNSAFE. This can cause serious allergic reactions such as anaphylaxis.

Special Precautions and Warnings

When applied under the tongue: Prescription timothy grass pollen extract is POSSIBLY SAFE for most adults when used appropriately. It can cause itching and irritation of the mouth and nose, blisters in the mouth, and runny nose. There isn't enough reliable information to know if non-prescription products are safe or what the side effects might be.

When injected under the skin: Timothy grass pollen extract is POSSIBLY SAFE for most adults when injected by a healthcare professional. It can cause irritation where the needle entered the skin. But using timothy grass pollen extract at very high doses is POSSIBLY UNSAFE. This can cause serious allergic reactions such as anaphylaxis.

Pregnancy and breast-feeding: There isn't enough reliable information to know if timothy grass is safe to use when pregnant or breast-feeding. Stay on the safe side and avoid use.

Children: Timothy grass pollen extract is POSSIBLY SAFE when applied under the tongue (sublingual) in children 5 years or older or when injected under the skin of children 3 years or older.

Interactions ?

We currently have no information for TIMOTHY GRASS overview.

Dosing

The following doses have been studied in scientific research:

ADULTS

UNDER THE TONGUE:
  • For hay fever: 2800 units of a prescription product (GRASTEK, Alk Abello A/S) daily, starting 8-12 weeks before grass pollen season starts and continuing until it ends. This product is approved by the US FDA.
CHILDREN

UNDER THE TONGUE:
  • For hay fever: 2,800 units of a prescription product (GRASTEK, Alk Abello A/S) daily, starting 8-12 weeks before grass pollen season starts and continuing until it ends. This product is approved by the US FDA.
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CONDITIONS OF USE AND IMPORTANT INFORMATION: This information is meant to supplement, not replace advice from your doctor or healthcare provider and is not meant to cover all possible uses, precautions, interactions or adverse effects. This information may not fit your specific health circumstances. Never delay or disregard seeking professional medical advice from your doctor or other qualified health care provider because of something you have read on WebMD. You should always speak with your doctor or health care professional before you start, stop, or change any prescribed part of your health care plan or treatment and to determine what course of therapy is right for you.

This copyrighted material is provided by Natural Medicines Comprehensive Database Consumer Version. Information from this source is evidence-based and objective, and without commercial influence. For professional medical information on natural medicines, see Natural Medicines Comprehensive Database Professional Version.
© Therapeutic Research Faculty 2020.