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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]
Quercus Robur Pollen is a non-standardized allergenic extract used primarily for the diagnosis and treatment of English Oak pollen allergies through skin testing and immunotherapy.
Name
Quercus Robur Pollen
Raw Name
QUERCUS ROBUR POLLEN
Category
Non-Standardized Pollen Allergenic Extract [EPC]
Drug Count
5
Variant Count
5
Last Verified
February 17, 2026
About Quercus Robur Pollen
Quercus Robur Pollen is a non-standardized allergenic extract used primarily for the diagnosis and treatment of English Oak pollen allergies through skin testing and immunotherapy.
Detailed information about Quercus Robur Pollen
References used for this content
This page is for informational purposes only and does not replace medical advice. Consult a qualified healthcare professional before using any medication containing Quercus Robur Pollen.
According to the FDA-approved labeling for allergenic extracts, Quercus Robur Pollen is classified as 'non-standardized' because its potency is typically measured by weight/volume (w/v) or Protein Nitrogen Units (PNU) rather than a biological activity unit (like BAU). Despite the 'non-standardized' label, these products are strictly regulated under the Biologics License Application (BLA) process to ensure safety and consistency. It is important to note that while the prompt mentions classes like Adrenocorticotropic Hormone [EPC], in primary clinical practice, Quercus Robur Pollen is strictly an immunomodulatory allergenic agent.
The mechanism of Quercus Robur Pollen depends on whether it is being used for diagnosis or treatment.
When used for skin prick testing (SPT) or intradermal testing, the extract introduces oak-specific proteins to the patient's skin. If the patient has been previously sensitized, they will have specific Immunoglobulin E (IgE) antibodies bound to the surface of mast cells in the dermis. The oak allergens cross-link these IgE antibodies, triggering mast cell degranulation. This releases inflammatory mediators such as histamine, leukotrienes, and prostaglandins, resulting in a localized 'wheal and flare' reaction (a raised bump surrounded by redness) within 15 to 20 minutes.
When used as immunotherapy (allergy shots), the extract works by gradually modifying the patient's immune response. Repeated, increasing doses of the allergen shift the immune system from a Th2-dominated response (which promotes IgE and allergic inflammation) to a Th1-dominated response. This process induces the production of 'blocking antibodies' known as IgG4. These IgG4 antibodies compete with IgE for allergen binding, effectively preventing the allergic cascade. Furthermore, immunotherapy promotes the development of regulatory T-cells (Tregs) that secrete IL-10 and TGF-beta, which suppress allergic inflammation at the cellular level.
Unlike traditional small-molecule drugs, the pharmacokinetics of allergenic extracts like Quercus Robur Pollen do not follow standard absorption, distribution, metabolism, and excretion (ADME) patterns.
Quercus Robur Pollen extract is indicated for:
Quercus Robur Pollen is available in several sterile liquid formats:
> Important: Only your healthcare provider can determine if Quercus Robur Pollen is right for your specific condition. The administration of this extract must be performed under the supervision of a physician trained in the management of anaphylaxis.
Dosage for Quercus Robur Pollen is highly individualized and must be titrated based on the patient's sensitivity levels. There is no 'standard' dose for all patients.
Quercus Robur Pollen is generally considered safe for use in children, though it is rarely initiated in children under the age of 5 due to the difficulty of monitoring for systemic reactions and the child's ability to cooperate with the injection schedule. Dosing for children follows the same weight/volume titration principles as adult dosing, though the physician may choose a more conservative escalation schedule.
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 its primary mechanism or toxicity.
No dosage adjustments are necessary for hepatic impairment.
Elderly patients should be evaluated for cardiovascular stability before beginning immunotherapy. The dose itself is not adjusted based on age, but the risk-benefit ratio must be carefully considered, particularly if the patient is on medications like beta-blockers.
Quercus Robur Pollen extract is strictly for professional use and is never self-administered by the patient at home.
If a dose is missed during the build-up phase, the next dose may need to be reduced depending on how much time has passed.
An overdose of Quercus Robur Pollen (either giving too much volume or a concentration that is too high) can lead to severe systemic reactions, including anaphylactic shock.
> Important: Follow your healthcare provider's dosing instructions. Do not adjust your dose or skip appointments without medical guidance.
Most patients undergoing immunotherapy with Quercus Robur Pollen will experience some form of local reaction. These are generally not dangerous but can be uncomfortable.
> Warning: Stop taking Quercus Robur Pollen and call your doctor immediately if you experience any of these.
There are no known long-term adverse effects associated with the proper use of Quercus Robur Pollen extract. Decades of clinical use have shown that allergen immunotherapy does not increase the risk of autoimmune diseases, malignancy, or chronic organ damage. In fact, long-term use is associated with a 'disease-modifying' effect, potentially preventing the development of asthma in children with allergic rhinitis.
Allergenic extracts, including Quercus Robur Pollen, carry an FDA-mandated warning regarding the risk of severe systemic reactions.
Report any unusual symptoms to your healthcare provider.
Quercus Robur Pollen is a potent biological product. Safety depends on accurate skin testing, appropriate dose titration, and strict adherence to administration protocols. Patients must be healthy at the time of injection; if you have a fever, respiratory infection, or an active asthma flare-up, your injection should be postponed.
No FDA black box warnings for Quercus Robur Pollen are listed in the same format as oral pharmaceuticals, but the Standardized Warning for Allergenic Extracts is functionally equivalent. It states that the extract may cause severe, life-threatening systemic reactions. It must be administered by physicians who are exceptionally familiar with the product and equipped to treat anaphylaxis. Patients must be observed for 30 minutes post-injection.
No routine lab tests (like liver or kidney function) are required for Quercus Robur Pollen. However, clinical monitoring is intensive:
Quercus Robur Pollen does not typically cause sedation. However, if a patient experiences a systemic reaction or receives epinephrine for a reaction, they should not drive or operate machinery until they have fully recovered and been cleared by a medical professional.
Alcohol should be avoided for several hours before and after an injection. Alcohol causes vasodilation (widening of blood vessels), which can increase the speed of allergen absorption and potentially increase the risk or severity of a systemic reaction.
Immunotherapy is typically discontinued after 3–5 years of successful maintenance. There is no 'withdrawal syndrome' associated with stopping Quercus Robur Pollen. However, stopping prematurely (before 3 years) significantly increases the risk that allergy symptoms will return quickly.
> Important: Discuss all your medical conditions with your healthcare provider before starting Quercus Robur Pollen.
> Important: Tell your doctor about ALL medications, supplements, and herbal products you are taking.
Patients allergic to Quercus Robur Pollen may show cross-sensitivity to other members of the Fagaceae family, including:
This means a skin test for English Oak may also trigger a reaction in a patient primarily allergic to Beech trees.
> Important: Your healthcare provider will evaluate your complete medical history before prescribing Quercus Robur Pollen.
Quercus Robur Pollen is classified as FDA Pregnancy Category C. There are no adequate and well-controlled studies in pregnant women.
It is not known whether the components of Quercus Robur Pollen extract are excreted in human milk. Because the extract consists of naturally occurring proteins that are degraded into amino acids, it is generally considered safe to continue maintenance immunotherapy while breastfeeding. No adverse effects have been reported in nursing infants.
Safety and effectiveness have been established in children. However, as noted previously, it is rarely recommended for children under 5 years of age. For older children, it is highly effective in preventing the 'allergic march'—the progression from hay fever to asthma.
Clinical studies of Quercus Robur Pollen did not include sufficient numbers of subjects aged 65 and over to determine if they respond differently than younger subjects. The primary concern in the elderly is the presence of comorbid cardiovascular disease, which increases the risk of complications if a systemic reaction occurs.
No dosage adjustments are required. The proteins in the extract are not known to be nephrotoxic, and their clearance is not dependent on renal function in a way that would increase systemic toxicity.
No adjustments are necessary. The liver is not the primary site of action or degradation for these allergenic proteins.
> Important: Special populations require individualized medical assessment.
Quercus Robur Pollen extract acts as an immunomodulator. In diagnostic use, it triggers a Type I hypersensitivity reaction via IgE-mediated mast cell degranulation. In therapeutic use, it induces peripheral T-cell tolerance. This is achieved through the induction of regulatory T-cells (Tregs) that produce IL-10, which suppresses the Th2 response and induces B-cells to switch from IgE production to IgG4 production. IgG4 acts as a 'blocking antibody,' preventing the allergen from reaching the IgE bound to mast cells.
| Parameter | Value |
|---|---|
| Bioavailability | N/A (Subcutaneous) |
| Protein Binding | N/A |
| Half-life | Hours (Local degradation) |
| Tmax | 15-30 minutes (Local peak) |
| Metabolism | Proteolytic enzymes |
| Excretion | Renal (Metabolites only) |
Quercus Robur Pollen extract is a complex mixture of proteins, glycoproteins, and polysaccharides. The primary allergens are often proteins in the 10–70 kDa range. The extract is typically standardized by Protein Nitrogen Units (PNU) or weight of the raw pollen per volume of extracting fluid (w/v).
Quercus Robur Pollen is a Non-Standardized Pollen Allergenic Extract. It is grouped with other tree pollen extracts such as Birch, Hickory, and Maple extracts.
Common questions about Quercus Robur Pollen
Quercus Robur Pollen extract is primarily used for the diagnosis and treatment of allergies to English Oak pollen. In a diagnostic setting, it is used in skin prick tests to confirm if a patient’s hay fever or asthma symptoms are caused by oak pollen. For treatment, it is used in allergen immunotherapy, commonly known as allergy shots. This involves giving the patient gradually increasing doses of the pollen to desensitize their immune system. Over time, this reduces the severity of allergic reactions when the patient is exposed to oak trees in nature.
The most common side effects are localized to the site of the injection or skin test. These include redness, itching, and a raised bump or swelling (wheal) at the site where the extract was applied or injected. Most of these reactions appear within minutes and resolve within a few hours. Some patients may also experience 'large local reactions,' where the swelling is several inches wide and lasts for a day or two. While these are uncomfortable, they are generally not dangerous and can be managed with ice packs or antihistamines.
It is strongly recommended to avoid alcohol on the days you receive a Quercus Robur Pollen injection. Alcohol causes your blood vessels to dilate (widen), which can speed up the absorption of the allergen into your bloodstream. This increased absorption rate can raise the risk of a systemic allergic reaction or make a reaction more severe. Furthermore, alcohol can mask the early symptoms of an allergic reaction, such as feeling flushed or lightheaded. To ensure your safety, wait at least 24 hours after your injection before consuming alcohol.
Quercus Robur Pollen is generally not started during pregnancy because the risk of a severe allergic reaction (anaphylaxis) could be dangerous for both the mother and the developing fetus. If a patient is already on a stable maintenance dose of immunotherapy and becomes pregnant, her doctor may choose to continue the treatment at that same dose. However, the dose is usually not increased until after delivery. If you are planning to become pregnant or find out you are pregnant, you must inform your allergist immediately to discuss the safest course of action.
When used for diagnosis, Quercus Robur Pollen works almost immediately, providing results within 15 to 20 minutes of a skin test. However, when used as a treatment (immunotherapy), it takes much longer to see a benefit. Most patients begin to notice a reduction in their allergy symptoms after 6 to 12 months of consistent injections. The full effect is usually reached after the patient has been on a maintenance dose for one to two years. For long-lasting protection, a total treatment course of 3 to 5 years is typically recommended.
Yes, you can stop Quercus Robur Pollen injections suddenly without experiencing any physical withdrawal symptoms, as it is not an addictive medication. However, stopping the treatment before the recommended 3-to-5-year period significantly increases the likelihood that your allergy symptoms will return. Immunotherapy works by gradually retraining your immune system, and this 'retraining' requires long-term consistency to become permanent. If you need to stop treatment due to side effects or lifestyle changes, discuss a tapering or alternative plan with your healthcare provider.
If you miss a scheduled immunotherapy injection, you should contact your allergist's office as soon as possible to reschedule. Do not attempt to 'double up' on your next dose. If you miss only one week, your doctor may give you your usual dose. However, if you miss several weeks, your immune system's tolerance may have decreased, and your doctor will likely need to reduce your dose for safety before building back up. Missing too many doses can significantly delay your progress toward reaching the maintenance phase.
There is no clinical evidence to suggest that Quercus Robur Pollen extract causes weight gain. The extract consists of natural proteins and glycoproteins that are administered in very small amounts (microliters) under the skin. It does not contain hormones or metabolic-altering chemicals that would affect body weight. If you experience weight changes while undergoing immunotherapy, it is likely due to other factors, such as lifestyle changes or other medications (like oral steroids sometimes used for severe allergies), and you should discuss this with your doctor.
Quercus Robur Pollen can be taken alongside most common medications, but there are critical exceptions. You must tell your doctor if you are taking beta-blockers, ACE inhibitors, or MAO inhibitors, as these can make allergic reactions much more dangerous or harder to treat. Most patients continue taking their daily allergy medications (like antihistamines or nasal sprays) during the early stages of immunotherapy. However, you should avoid taking antihistamines for several days before a diagnostic skin test, as they will block the reaction and lead to a false-negative result.
The concept of 'generic' drugs does not apply to allergenic extracts in the same way it does to pills. Because Quercus Robur Pollen is a biological product derived from natural sources, each manufacturer's extract is considered unique, even if they are all labeled as 'English Oak Pollen.' Different brands may have slightly different protein concentrations. Therefore, you should ideally stay with the same manufacturer's product throughout your treatment. If your doctor switches brands, they will often reduce your dose temporarily to ensure your safety during the transition.