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Medical Disclaimer: This information is for educational purposes only and is not a substitute for professional medical advice.
Non-Standardized Pollen Allergenic Extract [EPC]
Cyclachaena Xanthifolia Pollen is a non-standardized allergenic extract used in the diagnosis and treatment of allergic rhinitis and asthma. It belongs to the class of pollen allergenic extracts used for desensitization.
Name
Cyclachaena Xanthifolia Pollen
Raw Name
CYCLACHAENA XANTHIFOLIA POLLEN
Category
Non-Standardized Pollen Allergenic Extract [EPC]
Drug Count
16
Variant Count
17
Last Verified
February 17, 2026
About Cyclachaena Xanthifolia Pollen
Cyclachaena Xanthifolia Pollen is a non-standardized allergenic extract used in the diagnosis and treatment of allergic rhinitis and asthma. It belongs to the class of pollen allergenic extracts used for desensitization.
Detailed information about Cyclachaena Xanthifolia Pollen
This page is for informational purposes only and does not replace medical advice. Consult a qualified healthcare professional before using any medication containing Cyclachaena Xanthifolia Pollen.
Cyclachaena Xanthifolia Pollen, commonly derived from the plant known as Marsh Elder or Burweed Marsh Elder, is a pharmacological agent classified as a Non-Standardized Pollen Allergenic Extract [EPC]. In the realm of clinical immunology, this substance is utilized primarily for the diagnosis and treatment of Type I hypersensitivity reactions (allergic reactions mediated by IgE antibodies). The plant itself, Cyclachaena xanthifolia (formerly classified as Iva xanthiifolia), is a member of the Asteraceae family, which also includes ragweed and sunflowers. Its pollen is a potent aeroallergen, particularly prevalent in the late summer and autumn months across North America.
As a therapeutic agent, Cyclachaena Xanthifolia Pollen belongs to a class of drugs called allergenic extracts. These are biological products used in Allergen Immunotherapy (AIT), often referred to as 'allergy shots.' The primary goal of using this extract is to induce immunological tolerance in patients who suffer from allergic rhinitis (hay fever), allergic conjunctivitis (eye allergies), or allergic asthma triggered by exposure to Marsh Elder pollen. The FDA has historically regulated these extracts under the Biologics Control Act, and they remain a cornerstone of specialized allergy practice. Unlike 'standardized' extracts, which have a measured potency in Bioequivalent Allergy Units (BAU), Cyclachaena Xanthifolia Pollen is typically 'non-standardized,' meaning its potency is measured by weight/volume (w/v) or Protein Nitrogen Units (PNU).
At the molecular level, Cyclachaena Xanthifolia Pollen works through a process called desensitization or hyposensitization. When a patient is allergic to this pollen, their immune system incorrectly identifies the pollen proteins as dangerous invaders, producing Immunoglobulin E (IgE) antibodies. These antibodies bind to mast cells and basophils. Upon subsequent exposure, the pollen cross-links these IgE antibodies, causing the cells to degranulate and release inflammatory mediators like histamine, leukotrienes, and cytokines, which lead to allergy symptoms.
Immunotherapy with Cyclachaena Xanthifolia Pollen involves the repeated administration of the allergen in gradually increasing doses. This process shifts the immune response from a Th2-dominated profile (which promotes allergy) to a Th1-dominated profile or a T-regulatory (Treg) cell response. This shift results in the production of 'blocking antibodies' known as IgG4. These IgG4 antibodies compete with IgE for the allergen, preventing the allergic cascade. Furthermore, the treatment reduces the recruitment of eosinophils and mast cells to the mucosal surfaces (like the nose and eyes), leading to a long-term reduction in clinical symptoms and a decreased need for rescue medications like antihistamines or corticosteroids.
Because Cyclachaena Xanthifolia Pollen is a complex mixture of proteins and is administered either epicutaneously (skin prick) or subcutaneously (under the skin), its pharmacokinetic profile differs significantly from traditional oral medications.
Cyclachaena Xanthifolia Pollen is FDA-approved for the following clinical indications:
This allergenic extract is typically available in the following forms:
> Important: Only your healthcare provider can determine if Cyclachaena Xanthifolia Pollen is right for your specific condition. The initiation of immunotherapy requires a detailed clinical history and positive diagnostic testing.
Dosage for Cyclachaena Xanthifolia Pollen is highly individualized and must be determined by an allergist or immunologist based on the patient's sensitivity level. There is no 'one size fits all' dose.
The build-up phase (also called the escalation phase) typically involves weekly or bi-weekly injections. The starting dose is usually very low (e.g., 0.05 mL of a 1:10,000 w/v dilution). The dose is gradually increased every 3 to 7 days depending on the patient's local reaction. This phase usually lasts 3 to 6 months until the 'maintenance dose' is reached.
Once the effective therapeutic dose is reached, the frequency of injections is decreased. Maintenance doses are typically administered every 2 to 4 weeks. A common maintenance dose might be 0.5 mL of a 1:100 w/v or 1:20 w/v solution, though this varies significantly by manufacturer and patient tolerance.
Cyclachaena Xanthifolia Pollen is generally considered safe and effective for children, typically those aged 5 years and older. Dosing protocols for children are similar to adult protocols but may require more cautious escalation. Pediatric patients must be able to cooperate with the injection procedure and the mandatory 30-minute observation period. Use in children under age 5 is generally avoided due to the difficulty of communicating symptoms of an impending systemic reaction.
No specific dosage adjustments are required for patients with renal (kidney) impairment, as the proteins are not cleared by the kidneys in a way that would cause toxicity. However, the patient's overall health should be stable before receiving an injection.
No dosage adjustments are necessary for hepatic (liver) impairment. The metabolism of allergenic extracts does not involve the liver's metabolic pathways.
Elderly patients may receive Cyclachaena Xanthifolia Pollen immunotherapy, but healthcare providers must carefully evaluate their cardiovascular status. Older patients are more likely to be taking medications like beta-blockers, which can complicate the treatment of an allergic reaction if one occurs.
Cyclachaena Xanthifolia Pollen extracts are administered via subcutaneous injection (under the skin), 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 to maintain safety. If a dose is missed during the maintenance phase, the timing of the next shot depends on how much time has elapsed.
An 'overdose' in the context of allergenic extracts usually refers to the administration of a dose higher than the patient's current tolerance level. This can lead to a systemic allergic reaction or anaphylaxis.
> Important: Follow your healthcare provider's dosing instructions. Do not adjust your dose or skip appointments without medical guidance, as this increases the risk of reactions.
Most patients receiving Cyclachaena Xanthifolia Pollen immunotherapy will experience local reactions at the site of the injection. These are generally considered normal and indicate that the immune system is responding to the extract.
Some patients may experience 'large local reactions' or mild systemic symptoms that do not progress to full anaphylaxis.
Rarely, patients may experience more significant systemic issues that require a pause or adjustment in treatment.
> Warning: Stop taking Cyclachaena Xanthifolia Pollen and call your doctor immediately or seek emergency care if you experience any of these symptoms of anaphylaxis.
There are no known long-term 'toxic' effects of Cyclachaena Xanthifolia Pollen on organs like the liver, kidneys, or brain. The primary long-term risk is the development of new sensitivities, though immunotherapy is generally thought to prevent the development of new allergies in children. Some patients may develop persistent nodules (small, hard lumps) at injection sites if the same area is used too frequently.
While not all non-standardized extracts carry a formal 'Black Box' in the same way as newer sublingual tablets, the FDA-approved class labeling for allergenic extracts includes a severe warning regarding Anaphylaxis.
Summary of Warning:
Report any unusual symptoms to your healthcare provider. Even a 'large' local reaction should be reported before your next dose, as it may be a precursor to a more serious systemic reaction.
Cyclachaena Xanthifolia Pollen is a potent biological substance. Safety is dependent on strict adherence to administration protocols. It is vital that patients understand that 'more is not better'—the goal is a steady, safe increase in tolerance. This medication should never be self-administered at home.
No FDA black box warnings for Cyclachaena Xanthifolia Pollen specifically, but it falls under the general class warning for all injectable allergenic extracts. This warning emphasizes that these products can cause severe anaphylaxis and must only be administered by physicians who are exceptionally experienced in treating allergic diseases and managing life-threatening emergencies.
There are no specific laboratory tests (like blood counts or liver panels) required for Cyclachaena Xanthifolia Pollen. Instead, monitoring is clinical:
Cyclachaena Xanthifolia Pollen does not typically cause sedation or cognitive impairment. However, if a patient experiences a systemic reaction or receives epinephrine, they should not drive or operate machinery until they are fully recovered and cleared by a physician.
Alcohol should be avoided on the day of the injection. Alcohol can cause vasodilation (widening of blood vessels), which may theoretically increase the rate of allergen absorption and potentially mask early symptoms of an allergic reaction.
Immunotherapy is typically a long-term commitment (3 to 5 years). Stopping the treatment prematurely may result in the return of allergy symptoms. There is no 'withdrawal syndrome' associated with stopping Cyclachaena Xanthifolia Pollen, but the immunological benefits will gradually wane if the maintenance phase is not completed.
> Important: Discuss all your medical conditions, especially heart or lung problems, with your healthcare provider before starting Cyclachaena Xanthifolia Pollen.
While few drugs are strictly 'contraindicated' in the sense of a chemical reaction, certain medications make the use of Cyclachaena Xanthifolia Pollen unacceptably dangerous:
There are no direct food interactions with Cyclachaena Xanthifolia Pollen. However, patients with 'Oral Allergy Syndrome' (OAS) may find that eating certain foods (like sunflower seeds or melons) during the Marsh Elder pollen season increases their overall 'allergic load,' potentially making them more sensitive to their injections.
There is limited data on herbal interactions. However, supplements that affect the immune system (like Echinacea or high-dose Astragalus) should be discussed with an allergist, as they could theoretically interfere with the intended immunomodulatory effects of the pollen extract.
For each major interaction, the mechanism is usually pharmacodynamic (how the drugs affect the body's response) rather than pharmacokinetic (how the body processes the drug). The management strategy always involves a careful risk-benefit analysis by the allergist.
> Important: Tell your doctor about ALL medications, supplements, and herbal products you are taking, especially any medications for blood pressure or heart rhythm.
Cyclachaena Xanthifolia Pollen must NEVER be used in the following circumstances:
These conditions require a careful risk-benefit analysis by the specialist:
Patients allergic to Cyclachaena Xanthifolia Pollen often show cross-sensitivity to other members of the Asteraceae family. This includes:
> Important: Your healthcare provider will evaluate your complete medical history, including your current medications and lung function, before prescribing Cyclachaena Xanthifolia Pollen.
Cyclachaena Xanthifolia Pollen is classified as Pregnancy Category C. This means there are no adequate and well-controlled studies in pregnant women.
It is not known whether the protein components of Cyclachaena Xanthifolia Pollen are excreted in human milk. However, because these are large proteins that are broken down at the injection site, it is highly unlikely that they would reach the breast milk in any significant or active form. Immunotherapy is generally considered safe for breastfeeding mothers.
As discussed, the safety and efficacy of Cyclachaena Xanthifolia Pollen have been established in children, typically those 5 years of age and older. It is particularly beneficial in children as it may prevent the 'allergic march'—the progression from allergic rhinitis to asthma. It may also prevent the development of new sensitivities to other pollens.
Clinical studies of allergenic extracts often do not include sufficient numbers of subjects aged 65 and over to determine whether they respond differently from younger subjects. In older adults, the decision to use Cyclachaena Xanthifolia Pollen must be weighed against the presence of co-morbidities like coronary artery disease or chronic obstructive pulmonary disease (COPD), which increase the risk of complications from a systemic reaction.
There is no evidence that renal impairment affects the safety or efficacy of pollen extracts. No dosage adjustments based on Glomerular Filtration Rate (GFR) are necessary.
There are no specific studies on the use of this extract in patients with hepatic impairment. However, given the local proteolytic metabolism of the proteins, no dosage adjustment is typically required for patients with liver disease.
> Important: Special populations require individualized medical assessment. Always inform your allergist if you become pregnant or develop new health conditions during treatment.
Cyclachaena Xanthifolia Pollen acts as an immunomodulator. The extract contains various proteins (antigens) that are recognized by the immune system. Upon repeated subcutaneous administration, the following molecular changes occur:
The pharmacodynamic effect of Cyclachaena Xanthifolia Pollen is not immediate. While a skin test shows an immediate reaction, the therapeutic effect (reduction in symptoms) usually takes 3 to 6 months to begin and 12 to 18 months to reach peak efficacy. The duration of the effect can be long-lasting; many patients remain symptom-free for years after completing a 3-to-5-year course of treatment.
| Parameter | Value |
|---|---|
| Bioavailability | N/A (Subcutaneous/Local) |
| Protein Binding | N/A |
| Half-life | Days (Immunological effect lasts years) |
| Tmax | 30-60 minutes (for local absorption) |
| Metabolism | Local Proteolysis |
| Excretion | Cellular clearance |
Cyclachaena Xanthifolia Pollen is a member of the Non-Standardized Pollen Allergenic Extract class. It is grouped with other weed pollens such as Ragweed (Ambrosia) and Cocklebur (Xanthium).
Common questions about Cyclachaena Xanthifolia Pollen
Cyclachaena Xanthifolia Pollen, derived from the Marsh Elder plant, is primarily used for the diagnosis and treatment of seasonal allergies. In diagnostic settings, it is used in skin prick tests to identify if a patient is allergic to this specific weed pollen. For treatment, it is used in allergen immunotherapy (allergy shots) to help the body build up a tolerance to the pollen. This is particularly helpful for patients with allergic rhinitis or asthma who do not get enough relief from standard medications. The goal is to reduce long-term symptoms and the need for daily allergy drugs.
The most frequent side effects are local reactions at the site where the injection was given. These include redness, itching, and swelling, which usually appear shortly after the shot and disappear within a day. Some patients may also experience a temporary increase in their usual allergy symptoms, such as sneezing or watery eyes. While most reactions are mild, it is important to monitor the injection site and report any swelling larger than a few inches to your doctor. These local reactions are a sign that your immune system is interacting with the extract.
It is generally advised to avoid alcohol on the days you receive your allergy injections. Alcohol can cause your blood vessels to dilate, which might speed up the absorption of the pollen extract into your bloodstream, potentially increasing the risk of a systemic reaction. Additionally, alcohol can mask early symptoms of an allergic reaction, such as flushing or a rapid heartbeat, making it harder for you or your doctor to recognize a problem. To ensure the highest level of safety during your treatment, stay hydrated with water instead of alcohol. Always consult your allergist for their specific recommendations regarding your lifestyle and treatment.
The use of Cyclachaena Xanthifolia Pollen during pregnancy requires a careful discussion with your healthcare provider. Generally, doctors do not start new allergy shots during pregnancy because of the risk of a severe allergic reaction (anaphylaxis), which could deprive the baby of oxygen. However, if you are already on a stable maintenance dose and are tolerating it well, your doctor may allow you to continue the treatment. The dose is usually not increased while you are pregnant to minimize risks. Always inform your allergist as soon as you know you are pregnant so a safe plan can be established.
Immunotherapy with Cyclachaena Xanthifolia Pollen is a slow process and does not provide immediate relief like an antihistamine. Most patients begin to notice an improvement in their allergy symptoms toward the end of the build-up phase, which typically takes 3 to 6 months. Significant clinical benefits are usually felt after the first full year of maintenance therapy. For the best and most long-lasting results, a full course of treatment usually lasts between 3 and 5 years. This duration allows the immune system to fully 'relearn' its response to the pollen.
You can stop taking Cyclachaena Xanthifolia Pollen injections at any time without experiencing physical withdrawal symptoms, as it is not an addictive substance. However, stopping the treatment before the recommended 3-to-5-year period usually means your allergy symptoms will eventually return. The 'tolerance' built up by the immune system may not be permanent if the course is cut short. If you need to stop due to travel, cost, or side effects, discuss a tapering or maintenance plan with your allergist. They can help you understand how stopping will affect your long-term allergy management.
If you miss a scheduled injection, you should contact your allergist's office as soon as possible to reschedule. Do not try to 'double up' on your next dose. If only a few days have passed, you may be able to receive your regular dose. However, if several weeks have passed, your doctor will likely need to reduce the dose for your safety to prevent a reaction. If a significant amount of time has passed (usually over a month), you may need to go back several steps in your build-up schedule. Consistency is key to both the safety and effectiveness of the treatment.
There is no clinical evidence to suggest that Cyclachaena Xanthifolia Pollen allergenic extracts cause weight gain. Unlike oral corticosteroids (like prednisone), which are known to affect metabolism and appetite, allergenic extracts are proteins that work specifically on the immune system. Any changes in weight during treatment are likely due to other factors, such as lifestyle changes or other medications you may be taking. If you are concerned about weight changes, it is best to discuss them with your primary care physician. Immunotherapy itself is focused on immunological tolerance, not metabolic regulation.
Cyclachaena Xanthifolia Pollen can be taken alongside most common medications, but there are critical exceptions. You must inform your doctor if you are taking beta-blockers or ACE inhibitors for blood pressure, as these can make allergic reactions more dangerous and harder to treat. Most daily allergy medications, like antihistamines or nasal sprays, are actually continued during the early stages of immunotherapy. However, you should always provide a full list of your medications and supplements to your allergist. They will ensure that your other treatments do not interfere with the safety of your allergy shots.
The concept of 'generic' vs. 'brand name' is slightly different for allergenic extracts compared to pills. Cyclachaena Xanthifolia Pollen is a biological product produced by several different specialized laboratories (such as Greer, ALK, or HollisterStier). While the extracts are essentially the same active ingredient, they are not always considered interchangeable because their concentrations and manufacturing processes can vary. Your allergist will typically stick with one manufacturer for your entire course of treatment to ensure consistency in dosing. These products are generally covered by insurance as biological treatments rather than standard generic drugs.