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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]
Sorghum X Drummondii Pollen is a non-standardized allergenic extract used for the diagnosis and treatment of grass-induced allergic rhinitis and asthma. It belongs to the class of Non-Standardized Pollen Allergenic Extracts and works through immunomodulation to induce allergen tolerance.
Name
Sorghum X Drummondii Pollen
Raw Name
SORGHUM X DRUMMONDII POLLEN
Category
Non-Standardized Pollen Allergenic Extract [EPC]
Drug Count
13
Variant Count
14
Last Verified
February 17, 2026
About Sorghum X Drummondii Pollen
Sorghum X Drummondii Pollen is a non-standardized allergenic extract used for the diagnosis and treatment of grass-induced allergic rhinitis and asthma. It belongs to the class of Non-Standardized Pollen Allergenic Extracts and works through immunomodulation to induce allergen tolerance.
Detailed information about Sorghum X Drummondii Pollen
This page is for informational purposes only and does not replace medical advice. Consult a qualified healthcare professional before using any medication containing Sorghum X Drummondii Pollen.
Sorghum X Drummondii Pollen, commonly known in botanical and clinical circles as Sudan Grass pollen, is a biological substance used primarily in the field of allergy and immunology. It belongs to a specialized class of drugs known as Non-Standardized Pollen Allergenic Extracts [EPC]. Unlike standardized extracts, which are measured in Bioequivalent Allergy Units (BAU), non-standardized extracts like Sorghum X Drummondii are typically labeled based on their weight-to-volume (w/v) ratio or their Protein Nitrogen Unit (PNU) content. This extract is derived from the pollen of Sorghum × drummondii, a hybrid grass that is widely distributed across North America and used extensively in agriculture.
In clinical practice, this agent is used for two primary purposes: diagnostic skin testing and allergen immunotherapy (AIT). When used for diagnosis, it helps healthcare providers identify patients who have developed a Type I hypersensitivity (immediate-type allergy) to this specific grass pollen. When used for immunotherapy, it involves the repeated administration of the pollen extract to the patient to decrease their allergic symptoms and inflammatory response over time. The FDA has historically regulated these extracts under the Public Health Service Act, and they remain a cornerstone of personalized allergy management for patients suffering from seasonal allergic rhinitis (hay fever) and allergic conjunctivitis.
The mechanism of action for Sorghum X Drummondii Pollen in the context of immunotherapy is complex and involves a fundamental reprogramming of the patient’s immune system. In an allergic individual, exposure to grass pollen triggers a Th2-biased immune response, leading to the production of allergen-specific Immunoglobulin E (IgE) antibodies. These IgE antibodies bind to high-affinity receptors on mast cells and basophils. Upon re-exposure to the pollen, the allergen cross-links the IgE, causing the release of inflammatory mediators like histamine, leukotrienes, and cytokines, which produce the typical symptoms of sneezing, itching, and wheezing.
Sorghum X Drummondii Pollen immunotherapy works by shifting the immune response from a Th2 (allergic) profile to a Th1 (protective) or T-regulatory (Treg) profile. At the molecular level, regular subcutaneous injections of the extract induce the production of 'blocking antibodies,' specifically IgG4 and IgA. These antibodies compete with IgE for binding sites on the pollen allergens, effectively neutralizing the allergen before it can trigger mast cell degranulation. Furthermore, the treatment promotes the secretion of inhibitory cytokines such as Interleukin-10 (IL-10) and Transforming Growth Factor-beta (TGF-β), which suppress allergic inflammation and induce long-term immunologic tolerance. Talk to your healthcare provider to understand how this immunomodulatory process applies to your specific allergy profile.
As a biological allergenic extract consisting of a complex mixture of proteins, glycoproteins, and polysaccharides, Sorghum X Drummondii Pollen does not follow the traditional pharmacokinetic pathways (ADME) associated with small-molecule drugs.
Sorghum X Drummondii Pollen is FDA-indicated for the following clinical applications:
Sorghum X Drummondii Pollen is available in several concentrated forms for clinical use:
> Important: Only your healthcare provider can determine if Sorghum X Drummondii Pollen is right for your specific condition.
Dosage for Sorghum X Drummondii Pollen must be highly individualized based on the patient's sensitivity level, as determined by skin testing and clinical history. There is no 'standard' dose for all patients.
During the initial phase, injections are typically given 1 to 2 times per week. The starting dose is usually very low (e.g., 0.05 mL of a 1:100,000 w/v dilution). The dose is gradually increased at each visit (e.g., 0.1 mL, 0.2 mL, 0.4 mL) until the 'Maintenance Dose' is reached. This phase usually lasts 3 to 6 months.
Once the maximum tolerated dose is reached (often 0.5 mL of a 1:20 or 1:10 w/v concentration), the frequency of injections is decreased to once every 2 to 4 weeks. Maintenance therapy is generally continued for 3 to 5 years to achieve lasting desensitization.
Sorghum X Drummondii Pollen is generally considered safe for use in children, typically those aged 5 years and older. Dosing principles for children are similar to those for adults, though healthcare providers may use more cautious escalation schedules. It is rarely recommended for children under 5 due to the difficulty of communicating symptoms of a systemic reaction and the risk of anaphylaxis in very young populations.
No specific dosage adjustments are required for patients with renal impairment, as the proteins are not cleared via traditional renal filtration. However, the patient's overall health status should be stable.
No dosage adjustments are needed for hepatic impairment. The metabolic pathway of allergenic proteins does not involve the liver's cytochrome P450 system.
Caution is advised in elderly patients (over 65). While there is no specific age-based dose reduction, these patients are more likely to have underlying cardiovascular disease, which may increase the risk of complications if a systemic reaction (anaphylaxis) occurs.
Sorghum X Drummondii Pollen extract is 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, depending on how much time has passed. If a dose is missed during the maintenance phase (e.g., more than 4-6 weeks since the last injection), the healthcare provider will typically reduce the dose to ensure safety before building back up to the maintenance level.
An overdose of allergenic extract usually manifests as an immediate and severe systemic allergic reaction.
> Important: Follow your healthcare provider's dosing instructions. Do not adjust your dose without medical guidance.
Most patients receiving Sorghum X Drummondii Pollen immunotherapy will experience local reactions at the site of injection. These are generally considered a normal part of the body's immune response to the allergen.
These reactions are more generalized and may indicate that the dose is approaching the patient's limit of tolerance.
> Warning: Stop taking Sorghum X Drummondii Pollen and call your doctor immediately if you experience any of these symptoms after an injection.
There are no known long-term 'toxic' effects of Sorghum X Drummondii Pollen on the liver, kidneys, or brain. The primary long-term risk is the development of new sensitivities, although immunotherapy is generally thought to prevent the development of new allergies (the 'allergic march'). Some patients may experience persistent subcutaneous nodules (small, hard lumps under the skin) at injection sites if the same area is used repeatedly.
Sorghum X Drummondii Pollen, like all allergenic extracts, can cause severe, life-threatening systemic reactions, including anaphylaxis.
Report any unusual symptoms to your healthcare provider.
Sorghum X Drummondii Pollen is intended for use only by physicians who are experienced in the administration of allergenic extracts and the treatment of allergic diseases. Because of the risk of severe systemic reactions, the patient must be fully informed of the risks and benefits before beginning therapy. It is vital that patients are 'symptom-free' on the day of their injection; if a patient is experiencing an acute asthma flare or a severe respiratory infection, the injection should be postponed.
No FDA black box warnings for Sorghum X Drummondii Pollen are currently listed in the same format as pharmaceutical drugs, but the 'Warning' section of the prescribing information for all allergenic extracts serves as a functional equivalent. It emphasizes that anaphylaxis can occur at any time during treatment, even in patients who have previously tolerated the extract well. The presence of a prescription for an epinephrine auto-injector is often a prerequisite for undergoing this therapy.
Sorghum X Drummondii Pollen does not typically cause sedation. 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.
Alcohol consumption should be avoided on the day of the injection. Alcohol can increase blood flow to the skin (vasodilation), which may potentially speed up the absorption of the allergen and increase the risk of a systemic reaction.
Therapy is usually discontinued if the patient fails to show clinical improvement after 12-24 months of maintenance therapy. If a patient experiences a near-fatal systemic reaction, the risks of continuing therapy usually outweigh the benefits. There is no 'withdrawal syndrome' associated with stopping Sorghum X Drummondii Pollen, but allergic symptoms will likely return over time if the course of treatment was not completed.
> Important: Discuss all your medical conditions with your healthcare provider before starting Sorghum X Drummondii Pollen.
While there are few absolute contraindications for drug combinations, the following are highly discouraged:
> Important: Tell your doctor about ALL medications, supplements, and herbal products you are taking.
Sorghum X Drummondii Pollen must NEVER be used in the following circumstances:
Conditions requiring careful risk-benefit analysis include:
Patients allergic to Sorghum X Drummondii Pollen often show cross-sensitivity to other grasses in the Poaceae family. This includes:
Healthcare providers must account for these cross-sensitivities when designing a multi-allergen extract vial.
> Important: Your healthcare provider will evaluate your complete medical history before prescribing Sorghum X Drummondii Pollen.
Sorghum X Drummondii 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 Sorghum X Drummondii Pollen allergens or the induced antibodies are excreted in human milk. However, since the allergens are proteins that are digested in the infant's gastrointestinal tract, the risk to the nursing infant is considered negligible. Breastfeeding is generally considered safe for women receiving maintenance immunotherapy.
Immunotherapy is highly effective in children and has been shown to reduce the risk of developing asthma later in life.
Use in patients over 65 requires caution.
No dosage adjustments are required. The biological nature of the extract means it does not undergo renal clearance in a way that would lead to accumulation in patients with kidney disease. However, the patient must be hemodynamically stable.
No dosage adjustments are required. The liver is not the primary site of metabolism for injected allergenic proteins. The proteins are broken down by local and systemic proteases.
> Important: Special populations require individualized medical assessment.
Sorghum X Drummondii Pollen extract works by inducing immunologic tolerance. Upon subcutaneous administration, the pollen allergens are taken up by dendritic cells in the skin. These cells migrate to the lymph nodes and present the allergen to naive T-cells. In an allergic patient, this usually results in Th2 cell activation. Immunotherapy, however, uses high, repeated doses to favor the development of Regulatory T-cells (Tregs). These Tregs secrete IL-10 and TGF-β, which suppress the Th2 response and signal B-cells to switch production from IgE to IgG4. This shift reduces the activation of mast cells and basophils, effectively 'desensitizing' the patient to natural pollen exposure.
| Parameter | Value |
|---|---|
| Bioavailability | N/A (Subcutaneous Injection) |
| Protein Binding | N/A (Biological Proteins) |
| Half-life | Variable (Hours for proteins at site) |
| Tmax | 30-60 minutes (for systemic absorption) |
| Metabolism | Proteolytic degradation |
| Excretion | Minimal (Amino acid recycling) |
Sorghum X Drummondii Pollen is classified as a Non-Standardized Pollen Allergenic Extract. It is part of the broader category of Allergen Immunotherapy (AIT) agents. Related medications include standardized grass extracts (like Timothy Grass) and sublingual immunotherapy (SLIT) tablets.
Common questions about Sorghum X Drummondii Pollen
Sorghum X Drummondii Pollen, also known as Sudan Grass pollen, is primarily used for the diagnosis and treatment of seasonal allergies. Healthcare providers use it in skin prick tests to confirm if a patient is allergic to this specific type of grass. For treatment, it is used in allergen immunotherapy (allergy shots) to help the body build a tolerance to the pollen. Over time, this can significantly reduce symptoms like sneezing, itchy eyes, and nasal congestion. It is particularly helpful for patients who do not get enough relief from standard over-the-counter allergy medications.
The most common side effects are local reactions at the site of the injection, occurring in nearly all patients at some point during therapy. These include redness, swelling, itching, and a small bump or 'wheal' where the shot was given. These symptoms usually appear within minutes and resolve within 24 to 48 hours. Some patients may also experience a temporary increase in their typical allergy symptoms, such as sneezing or watery eyes. While bothersome, these local reactions are generally not dangerous. However, any large swelling (bigger than a few inches) should be reported to your doctor before your next dose.
It is generally advised to avoid alcohol on the days you receive your Sorghum X Drummondii Pollen injections. Alcohol can cause your blood vessels to dilate (widen), which may increase the speed at which the pollen extract is absorbed into your bloodstream. This faster absorption can potentially increase the risk of a serious systemic allergic reaction or anaphylaxis. Furthermore, alcohol can sometimes mask the early symptoms of an allergic reaction, making it harder for you to realize you need medical help. For your safety, wait at least 24 hours after your injection before consuming alcoholic beverages. Always discuss your lifestyle habits with your allergist.
Sorghum X Drummondii Pollen is generally not started during pregnancy because the risk of a severe allergic reaction (anaphylaxis) could harm the developing fetus by reducing oxygen supply. However, if a woman is already on a maintenance dose of allergy shots and is tolerating them well, most doctors allow her to continue the treatment. The dose is typically not increased during pregnancy to minimize the risk of new reactions. If you become pregnant while receiving these injections, it is vital to inform your allergist immediately. They will evaluate your specific case to decide if the benefits of continuing the shots outweigh the potential risks. Every pregnancy is unique, so professional medical guidance is essential.
Allergen immunotherapy is a long-term treatment and does not provide immediate relief like an antihistamine pill. Most patients begin to notice a reduction in their allergy symptoms during the 'maintenance phase,' which usually starts 3 to 6 months after beginning the injections. Significant improvement is typically seen after the first full grass pollen season while on the maintenance dose. For the best and most lasting results, the treatment is usually continued for 3 to 5 years. This duration allows the immune system to fully 'relearn' how to handle the pollen without overreacting. Patience and consistency are key to the success of this therapy.
Yes, you can stop taking Sorghum X Drummondii Pollen injections suddenly without experiencing a 'withdrawal' effect like you might with some other medications. However, stopping the treatment prematurely—especially before completing the first year—usually means your allergy symptoms will return at their original intensity. If you have completed several years of therapy, the benefits may last for a long time even after you stop. If you need to stop due to side effects, travel, or financial reasons, you should discuss this with your doctor. They can advise you on the likelihood of your symptoms returning and help you explore alternative treatments if necessary.
If you miss a dose of Sorghum X Drummondii Pollen, you should contact your allergist's office to reschedule as soon as possible. Do not attempt to 'double up' on your next dose or take a higher dose to make up for the missed one. If you miss only one week during the build-up phase, your doctor might repeat the last dose you received. However, if you miss several weeks or months, your doctor will likely need to significantly reduce your dose and gradually build it back up to ensure your safety. Missing doses frequently can reduce the effectiveness of the treatment and increase the risk of a reaction when you restart.
There is no clinical evidence to suggest that Sorghum X Drummondii Pollen or other allergenic extracts cause weight gain. These extracts are biological proteins that work locally and through the immune system; they do not affect your metabolism, appetite, or fat storage. If you experience weight gain while undergoing immunotherapy, it is likely due to other factors, such as lifestyle changes or other medications you may be taking (like oral steroids for severe asthma). If you have concerns about weight changes, it is best to discuss them with your primary care physician to identify the underlying cause. Your allergy shots are very unlikely to be the culprit.
Sorghum X Drummondii Pollen can be taken alongside most common medications, but there are some very important exceptions. You must tell your doctor if you are taking beta-blockers (often used for blood pressure, heart rhythm, or glaucoma), as these can make an allergic reaction much harder to treat. ACE inhibitors and MAO inhibitors also require special caution. Most standard allergy medications, like antihistamines and nasal sprays, are perfectly fine and are often used together with the injections. Always provide your allergist with a complete and updated list of all prescriptions, over-the-counter drugs, and herbal supplements you are using to ensure your safety.
The concept of 'generic' vs. 'brand name' works differently for allergenic extracts like Sorghum X Drummondii Pollen compared to regular pills. These extracts are biological products made by several different specialized laboratories (such as ALK, Greer, or HollisterStier). While the extracts from different manufacturers are similar, they are not considered exactly identical or interchangeable 'generics' because they are non-standardized. Your allergist will usually stick with one manufacturer's extract for your entire course of treatment to ensure consistency in your dosing. If they do need to switch brands, they will typically reduce your dose slightly to be safe.