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Medical Disclaimer: This information is for educational purposes only and is not a substitute for professional medical advice.
Standardized Pollen Allergenic Extract [EPC]
Cynodon Dactylon Whole is a standardized pollen allergenic extract used primarily for the diagnosis and treatment of Bermuda grass-induced allergic rhinitis and conjunctivitis through immunotherapy. It belongs to the Standardized Pollen Allergenic Extract [EPC] drug class.
Name
Cynodon Dactylon Whole
Raw Name
CYNODON DACTYLON WHOLE
Category
Standardized Pollen Allergenic Extract [EPC]
Drug Count
5
Variant Count
5
Last Verified
February 17, 2026
About Cynodon Dactylon Whole
Cynodon Dactylon Whole is a standardized pollen allergenic extract used primarily for the diagnosis and treatment of Bermuda grass-induced allergic rhinitis and conjunctivitis through immunotherapy. It belongs to the Standardized Pollen Allergenic Extract [EPC] drug class.
Detailed information about Cynodon Dactylon Whole
This page is for informational purposes only and does not replace medical advice. Consult a qualified healthcare professional before using any medication containing Cynodon Dactylon Whole.
Cynodon Dactylon Whole, commonly known as Bermuda Grass extract, is a biological substance classified as a Standardized Pollen Allergenic Extract [EPC]. This agent is derived from the pollen of the Cynodon dactylon plant, a perennial grass found extensively in tropical and subtropical regions. In the clinical setting, it is utilized as a diagnostic tool for skin testing and as a therapeutic agent for allergen immunotherapy (AIT). According to the FDA’s Center for Biologics Evaluation and Research (CBER), these extracts are regulated as biologics because they are intended to alter the immune response in patients with Type I hypersensitivity (immediate-type allergy).
Cynodon Dactylon Whole belongs to a class of drugs called allergenic extracts. These are unique because they are not traditional pharmacological 'inhibitors' or 'activators' of a specific receptor in the way a beta-blocker or an ACE inhibitor functions. Instead, they are complex mixtures of proteins (allergens) that the immune system has mistakenly identified as harmful. The primary goal of using this extract is to induce immunological tolerance, a process where the body becomes desensitized to the allergen, thereby reducing or eliminating symptoms of allergic rhinitis (hay fever), allergic conjunctivitis (eye allergies), and allergic asthma.
The mechanism of action for Cynodon Dactylon Whole involves a sophisticated modulation of the human immune system. In a patient allergic to Bermuda grass, the immune system produces specific Immunoglobulin E (IgE) antibodies against the grass proteins (such as Cyn d 1, the major allergen). Upon exposure, these IgE antibodies trigger mast cells and basophils to release inflammatory mediators like histamine, leukotrienes, and cytokines, leading to the classic symptoms of sneezing, itching, and congestion.
When administered through immunotherapy, Cynodon Dactylon Whole works by shifting the immune response from a Th2-dominated profile (which promotes IgE and inflammation) to a Th1 or T-regulatory (Treg) response. This transition involves several key molecular steps:
Unlike traditional small-molecule drugs, the pharmacokinetics of allergenic extracts like Cynodon Dactylon Whole are not measured through standard blood levels of the active ingredient, as the 'active ingredients' are various proteins that are rapidly processed by the immune system.
Cynodon Dactylon Whole is FDA-approved for the following indications:
Off-label uses are rare but may include experimental protocols for oral desensitization in specialized academic settings, though this is not standard clinical practice.
Cynodon Dactylon Whole is typically available in the following forms:
> Important: Only your healthcare provider can determine if Cynodon Dactylon Whole is right for your specific condition. Immunotherapy must be administered under the supervision of a physician trained in the management of anaphylaxis.
Dosage for Cynodon Dactylon Whole is highly individualized and follows a two-phase protocol: the Build-up Phase and the Maintenance Phase.
Cynodon Dactylon Whole is used in children, generally starting at age 5. Dosing protocols are similar to adult protocols but require extreme caution due to the child's smaller body mass and potential difficulty in communicating early symptoms of a systemic reaction. It is generally not recommended for children under 5 years of age due to the risks of immunotherapy and the difficulty of administering frequent injections.
No specific dosage adjustments are required for patients with renal impairment, as the extract is not cleared through the kidneys in a manner that affects systemic toxicity.
No specific dosage adjustments are required for patients with hepatic impairment.
Elderly patients (over 65) should be evaluated for cardiovascular health before starting Cynodon Dactylon Whole. If an elderly patient is taking beta-blockers for hypertension or heart disease, they may be at higher risk if a systemic reaction occurs (see Warnings).
Cynodon Dactylon Whole is administered via subcutaneous injection, usually in the posterior aspect of the upper arm.
If a dose is missed during the build-up phase, the next dose may need to be reduced or the previous dose repeated, depending on how much time has passed. If more than 4 weeks have passed during maintenance, the dose is typically reduced. Your allergist will follow a specific 'gap schedule' to ensure safety.
An 'overdose' in the context of allergenic extracts usually refers to an accidental administration of a higher concentration than intended or a dose given too soon after a previous one.
> Important: Follow your healthcare provider's dosing instructions. Do not adjust your dose or skip appointments without medical guidance.
Most patients receiving Cynodon Dactylon Whole will experience local reactions at the site of the injection. These are generally not dangerous but can be uncomfortable.
These reactions are often referred to as 'large local reactions' or mild systemic symptoms.
Rarely, patients may experience more significant systemic issues that require medical intervention.
> Warning: Stop taking Cynodon Dactylon Whole and call your doctor immediately if you experience any of these symptoms of anaphylaxis.
There are no known long-term 'toxic' side effects of Cynodon Dactylon Whole on organs like the liver or kidneys. The primary long-term effect is the desired modulation of the immune system. However, patients with underlying autoimmune diseases should be monitored closely, as there is a theoretical (though largely unproven) risk that immunotherapy could exacerbate certain autoimmune conditions.
Allergenic extracts, including Cynodon Dactylon Whole, can cause severe life-threatening systemic reactions, including anaphylaxis.
Report any unusual symptoms to your healthcare provider immediately. Even a 'small' reaction today could predict a 'large' reaction at the next appointment.
Cynodon Dactylon Whole is a potent biological product. It is intended only for use by physicians who are experienced in the administration of allergenic extracts and the treatment of allergic diseases. Patients must be informed that the risk of a systemic reaction is inherent in the treatment, though the risk is minimized by following standard dosing protocols.
No FDA black box warnings exist specifically for the 'Cynodon Dactylon' plant itself, but the Standardized Allergenic Extract class carries a class-wide black box warning regarding the risk of anaphylaxis. This warning emphasizes that these products should not be administered to patients with severe, unstable, or uncontrolled asthma, as these individuals are at the highest risk for fatal reactions.
Cynodon Dactylon Whole does not typically cause drowsiness or cognitive impairment. However, if a patient experiences a systemic reaction or receives epinephrine, they should not drive or operate machinery until they have fully recovered and been cleared by a medical professional.
There is no direct chemical interaction between alcohol and Cynodon Dactylon Whole. However, alcohol consumption can cause vasodilation (widening of blood vessels), which may theoretically increase the rate of absorption of the extract or mask the early symptoms of an allergic reaction. It is generally advised to avoid alcohol for several hours after an injection.
Immunotherapy is typically discontinued after 3 to 5 years of successful treatment. It may be discontinued early if the patient experiences a severe systemic reaction that makes further treatment unsafe, or if there is no clinical improvement after one year of maintenance therapy.
> Important: Discuss all your medical conditions, especially respiratory or heart problems, with your healthcare provider before starting Cynodon Dactylon Whole.
There are no known direct food interactions with Cynodon Dactylon Whole. However, patients with 'Oral Allergy Syndrome' may find that eating certain foods (like melons or citrus) during Bermuda grass season increases their overall 'allergic load,' potentially making them more sensitive to their injections.
For each major interaction, the mechanism is usually pharmacodynamic (affecting the body's response to the drug) rather than pharmacokinetic (affecting the drug's levels). Management involves careful screening and, in the case of beta-blockers, switching to an alternative class of medication before starting immunotherapy.
> Important: Tell your doctor about ALL medications, supplements, and herbal products you are taking, especially any heart or blood pressure medicines.
Cynodon Dactylon Whole must NEVER be used in the following circumstances:
These conditions require a careful risk-benefit analysis by the allergist:
Cynodon Dactylon (Bermuda Grass) is a member of the Chloridoideae subfamily. It does NOT typically cross-react significantly with Pooideae grasses (like Timothy, Orchard, or Kentucky Bluegrass). However, patients sensitive to Bermuda grass may show cross-reactivity with other 'Southern grasses' such as Johnson grass or Bahia grass. If a patient is allergic to one, they must be tested carefully for the others.
> Important: Your healthcare provider will evaluate your complete medical history, including your lung function and heart health, before prescribing Cynodon Dactylon Whole.
Cynodon Dactylon Whole is categorized as Pregnancy Category C.
There is no evidence that allergenic proteins from Cynodon Dactylon Whole are excreted in human milk in a way that would affect a nursing infant. Immunotherapy is generally considered safe during breastfeeding.
Geriatric patients are at higher risk for complications from immunotherapy due to the higher prevalence of underlying cardiovascular disease and the use of medications like beta-blockers. Dosing should be approached conservatively, and a thorough cardiac evaluation is recommended before starting treatment.
No dosage adjustments are needed. The proteins are processed locally by the immune system and are not dependent on renal filtration for their therapeutic effect or for the prevention of toxicity.
No dosage adjustments are needed. Hepatic function does not significantly impact the safety or efficacy of subcutaneous allergenic extracts.
> Important: Special populations, particularly pregnant women and the elderly, require individualized medical assessment and frequent monitoring during allergy treatment.
Cynodon Dactylon Whole acts as an immunomodulator. The primary allergens in the extract, such as Cyn d 1 (a beta-expansin protein), are captured by dendritic cells in the subcutaneous tissue. These cells process the proteins and present them to naive T-cells in the lymph nodes. In an allergic individual, this usually leads to Th2 cell activation. Immunotherapy forces the system to produce T-regulatory (Treg) cells. These Tregs produce IL-10, which signals B-cells to switch production from IgE (the 'allergy' antibody) to IgG4 (the 'blocking' antibody).
| Parameter | Value |
|---|---|
| Bioavailability | N/A (Subcutaneous/Local) |
| Protein Binding | N/A (Processed by cells) |
| Half-life | Hours (Proteins) / Months (Immune Memory) |
| Tmax | 15-30 minutes (Absorption to local nodes) |
| Metabolism | Lysosomal Proteolysis |
| Excretion | Cellular turnover |
Cynodon Dactylon Whole is a complex biological mixture. It is not a single molecule and therefore does not have a single molecular weight or formula. It consists of various proteins, glycoproteins, and polysaccharides. The 'standardization' is achieved by comparing the extract's ability to inhibit the binding of IgE in a reference serum pool (ELISA inhibition) against a standard reference provided by the FDA.
It is classified as a Standardized Pollen Allergenic Extract. It is related to other grass extracts like Timothy (Phleum pratense) and Orchard grass (Dactylis glomerata), though it is botanically distinct as a member of the Chloridoideae family.
Common questions about Cynodon Dactylon Whole
Cynodon Dactylon Whole is primarily used for the diagnosis and treatment of allergies to Bermuda grass. As a diagnostic tool, it is used in skin prick testing to identify if a patient has an IgE-mediated sensitivity to this specific grass pollen. As a treatment, it is used in allergen immunotherapy (allergy shots) to desensitize the immune system over time. This process helps reduce symptoms of hay fever, allergic conjunctivitis, and allergic asthma in patients who do not get enough relief from standard medications. It is specifically indicated for those with a confirmed clinical history of Bermuda grass allergy.
The most common side effects are local reactions at the site of the injection, occurring in nearly all patients at some point during treatment. These include redness, itching, swelling, and a hard bump where the shot was given. These reactions usually appear within minutes and resolve within 24 to 48 hours. Some patients may also experience a temporary flare-up of their allergy symptoms, such as sneezing or a stuffy nose. While these are common and usually mild, any large swelling (bigger than a palm) should be reported to your doctor before your next dose.
While there is no direct chemical interaction between alcohol and the grass extract, it is generally recommended to avoid alcohol for several hours after your injection. Alcohol can cause your blood vessels to dilate, which might increase the rate at which the allergen is absorbed into your bloodstream, potentially increasing the risk of a systemic reaction. Additionally, alcohol can mask early symptoms of an allergic reaction or make them harder to manage. Always follow the specific 'post-injection' guidelines provided by your allergy clinic. If you have a history of severe reactions, your doctor may advise more strict avoidance.
Cynodon Dactylon Whole is generally not started during pregnancy because of the risk of a severe allergic reaction (anaphylaxis), which could deprive the fetus of oxygen. However, if a patient is already on a stable maintenance dose and is tolerating the shots well, most allergists will continue the treatment at the same dose. The dose is typically not increased while the patient is pregnant to avoid the risk of a new reaction. It is classified as Pregnancy Category C, meaning it should only be used if the potential benefit justifies the potential risk to the fetus. Always inform your allergist immediately if you become pregnant.
Immunotherapy with Cynodon Dactylon Whole is a long-term commitment and does not provide immediate relief like an antihistamine. Most patients begin to notice a decrease in their allergy symptoms during the first grass season after they reach their maintenance dose, which usually takes 3 to 6 months. Maximum benefit is typically seen after 12 to 24 months of consistent treatment. To achieve long-lasting or permanent relief, a full course of 3 to 5 years of injections is generally required. If no improvement is seen after one year of maintenance therapy, your doctor may re-evaluate the treatment plan.
Yes, you can stop taking the injections suddenly without experiencing a 'withdrawal' in the traditional sense, as the extract is not an addictive substance. However, stopping treatment prematurely, especially during the first year or two, will likely result in the return of your allergy symptoms. To achieve a permanent change in your immune system, it is important to complete the full 3-to-5-year course as recommended by your allergist. If you need to stop due to side effects or life changes, discuss a tapering or stopping plan with your healthcare provider to understand how it might affect your long-term allergy management.
If you miss a dose, you should contact your allergy clinic as soon as possible to reschedule. Do not try to 'double up' on your next dose or take it at home. The safety of the next dose depends on how long it has been since your last injection. If you are in the build-up phase and miss a dose, your doctor may need to repeat the previous dose or even reduce it slightly. If you are in the maintenance phase and miss a dose by more than a week or two, a temporary dose reduction is often necessary to ensure you don't have a reaction when you restart.
There is no clinical evidence to suggest that Cynodon Dactylon Whole or other allergenic extracts cause weight gain. These products are biological proteins that work on the immune system and do not affect the metabolic processes or hormones that typically regulate body weight. If you experience weight changes while on immunotherapy, it is likely due to other factors such as lifestyle changes, other medications (like oral steroids sometimes used for asthma), or an unrelated medical condition. You should discuss any significant weight changes with your primary care physician.
Cynodon Dactylon Whole can be taken alongside most standard allergy medications like antihistamines, nasal steroids, and asthma inhalers. In fact, these are often used together during the early stages of treatment. However, it can have dangerous interactions with beta-blockers (used for heart conditions) and certain antidepressants like MAOIs. These drugs can make an allergic reaction much harder to treat. Always provide your allergist with a complete list of your medications, including eye drops and herbal supplements, to ensure there are no hidden risks.
Because allergenic extracts are complex biological products (biologics), they do not have 'generics' in the same way that simple chemical drugs like ibuprofen do. Instead, different manufacturers produce their own versions of Bermuda grass extract, which are considered 'similar' but not necessarily identical. In the United States, these are often referred to by their brand names or simply as 'Standardized Bermuda Grass Extract.' Your allergist will typically stick with one manufacturer's product for your entire course of treatment to ensure consistency in the strength and purity of the doses you receive.