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Medical Disclaimer: This information is for educational purposes only and is not a substitute for professional medical advice.
Non-Standardized Food Allergenic Extract [EPC]
Asclepias Tuberosa Root is a non-standardized plant allergenic extract used primarily for diagnostic testing and immunotherapy for individuals with specific botanical sensitivities.
Name
Asclepias Tuberosa Root
Raw Name
ASCLEPIAS TUBEROSA ROOT
Category
Non-Standardized Food Allergenic Extract [EPC]
Drug Count
6
Variant Count
6
Last Verified
February 17, 2026
About Asclepias Tuberosa Root
Asclepias Tuberosa Root is a non-standardized plant allergenic extract used primarily for diagnostic testing and immunotherapy for individuals with specific botanical sensitivities.
Detailed information about Asclepias Tuberosa Root
This page is for informational purposes only and does not replace medical advice. Consult a qualified healthcare professional before using any medication containing Asclepias Tuberosa Root.
The FDA regulates these extracts under the Center for Biologics Evaluation and Research (CBER). Unlike 'standardized' extracts (such as those for grass pollens or dust mites, which have a defined potency), non-standardized extracts like Asclepias Tuberosa Root are prepared through a process of extraction from the raw botanical source material. The potency is typically expressed in terms of weight-to-volume (w/v) ratio or Protein Nitrogen Units (PNU). Historically, the root of the Asclepias tuberosa plant was used in traditional medicine for respiratory ailments, but its modern clinical existence is primarily defined by its role in allergenic provocation and desensitization protocols.
As an allergenic extract, Asclepias Tuberosa Root works through the principles of immunology rather than traditional receptor-mediated biochemistry. When used for diagnostic purposes, such as in percutaneous (skin prick) or intradermal testing, the extract is introduced into the skin. If the patient has pre-existing IgE (Immunoglobulin E) antibodies specific to the proteins found in Asclepias Tuberosa, these antibodies—which are bound to the surface of mast cells and basophils—will recognize the allergen. This recognition triggers a process called 'cross-linking,' leading to the degranulation of the mast cells. This release of chemical mediators, primarily histamine, leukotrienes, and prostaglandins, results in a localized 'wheal and flare' reaction (a raised bump surrounded by redness). This reaction allows the healthcare provider to confirm a clinical sensitivity to the substance.
When used for therapeutic purposes, known as Allergen Immunotherapy (AIT) or 'allergy shots,' the extract is administered via subcutaneous injection in gradually increasing doses. The goal of this treatment is to induce immunological tolerance. At the molecular level, this involves a shift in the immune response from a Th2-dominated profile (which promotes IgE production and allergic inflammation) to a Th1-dominated profile. Furthermore, it stimulates the production of 'blocking antibodies' (IgG4) and the expansion of regulatory T cells (Tregs) that secrete IL-10 and TGF-beta, which suppress the allergic cascade. Over time, this reduces the patient's symptoms upon natural exposure to the plant or its pollen.
Because Asclepias Tuberosa Root is an allergenic extract administered locally or subcutaneously, traditional pharmacokinetic parameters like oral bioavailability or hepatic CYP450 metabolism do not apply in the conventional sense.
Asclepias Tuberosa Root extract is primarily indicated for:
Asclepias Tuberosa Root is generally available in the following forms:
> Important: Only your healthcare provider can determine if Asclepias Tuberosa Root is right for your specific condition. The use of allergenic extracts must be supervised by a physician trained in the management of anaphylaxis.
Dosage for Asclepias Tuberosa Root allergenic extract is highly individualized and must be determined by a specialist (allergist or immunologist) based on the patient's level of sensitivity. There is no 'standard' dose for all patients.
Therapy is divided into two phases:
Asclepias Tuberosa Root extract may be used in children, but extreme caution is required. Dosing follows the same principles as adult dosing—starting with very low concentrations and escalating based on tolerance. Children may be at a higher risk for systemic reactions if they have poorly controlled asthma. Safety and efficacy for immunotherapy have not been established in children under the age of 5.
No specific dosage adjustments are provided for renal impairment, as the extract is not cleared through the kidneys in a manner that would lead to toxicity. However, the patient's overall health should be considered.
No specific adjustments are required for hepatic impairment. The metabolic breakdown of allergenic proteins is not dependent on hepatic function.
Elderly patients should be evaluated for cardiovascular stability before beginning immunotherapy. Older adults may have a reduced physiological reserve to survive a severe systemic reaction or anaphylaxis.
This medication is NEVER for self-administration at home. It must be administered by a healthcare professional in a clinical setting equipped to handle emergencies.
If a dose of immunotherapy is missed, the next dose may need to be reduced depending on how much time has passed. If the interval since the last injection is too long (e.g., more than 4 weeks during the build-up phase), the physician may restart the escalation from a lower concentration to ensure safety.
An 'overdose' in the context of allergenic extracts usually refers to the administration of a dose that exceeds the patient's current tolerance level. Signs of overdose include:
Emergency Measures: If a systemic reaction occurs, epinephrine is the first-line treatment. The patient may also require antihistamines, corticosteroids, and intravenous fluids.
> Important: Follow your healthcare provider's dosing instructions. Do not adjust your dose without medical guidance.
Local reactions are the most frequent side effects associated with Asclepias Tuberosa Root allergenic extract. These occur at the site of the skin test or immunotherapy injection.
> Warning: Stop taking Asclepias Tuberosa Root and call your doctor immediately if you experience any of these.
There are no known long-term 'toxic' side effects of Asclepias Tuberosa Root extract, as it is a biological protein that is naturally degraded. However, the long-term benefit of immunotherapy is the 'disease-modifying' effect, which can lead to years of reduced sensitivity to the allergen even after the treatment is discontinued. In rare cases, patients may develop persistent nodules at the injection site if aluminum-adsorbed extracts are used over many years.
Allergenic extracts, including Asclepias Tuberosa Root, can cause severe systemic reactions, including fatal anaphylaxis. These reactions are more likely in patients with unstable asthma or those receiving high doses during the build-up phase. Extracts must only be administered by healthcare providers prepared to treat anaphylaxis. Patients should be observed for at least 30 minutes after injection. Some patients may experience 'delayed' reactions several hours later.
Report any unusual symptoms to your healthcare provider.
Asclepias Tuberosa Root extract is a potent biological agent. Its use is restricted to diagnostic and therapeutic protocols managed by allergy specialists. The primary risk associated with this agent is the potential for an exaggerated immune response. Patients must be in their baseline state of health (no active infections or asthma flares) before receiving an injection.
No FDA black box warnings for Asclepias Tuberosa Root specifically, but all non-standardized allergenic extracts carry a general class warning regarding the risk of severe systemic reactions. The prescribing information emphasizes that these products should only be used by physicians who are exceptionally experienced in the treatment of allergic diseases and the management of life-threatening emergencies.
Generally, Asclepias Tuberosa Root does not 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 physician.
Alcohol should be avoided on the day of an immunotherapy injection. Alcohol can cause vasodilation (widening of blood vessels), which may theoretically increase the rate of allergen absorption and heighten the risk of a systemic reaction.
Immunotherapy is typically a 3-to-5-year commitment. If a patient decides to stop treatment early, there is no 'withdrawal' syndrome, but the allergic symptoms are likely to return as the immunological tolerance fades. Tapering is not required for discontinuation.
> Important: Discuss all your medical conditions with your healthcare provider before starting Asclepias Tuberosa Root.
There are no drugs that are strictly 'contraindicated' in the sense of a chemical reaction, but certain medications make the use of Asclepias Tuberosa Root extract extremely dangerous:
There are no specific food interactions with Asclepias Tuberosa Root extract. However, patients should avoid heavy meals or vigorous exercise immediately before and after an injection, as these activities increase blood flow and may accelerate the systemic absorption of the allergen.
Asclepias Tuberosa Root extract does not typically interfere with standard blood chemistry or hematology tests. However, it will directly affect:
> Important: Tell your doctor about ALL medications, supplements, and herbal products you are taking.
Asclepias Tuberosa Root extract must NEVER be used in the following circumstances:
Conditions requiring careful risk-benefit analysis include:
Asclepias Tuberosa belongs to the Apocynaceae (formerly Asclepiadaceae) family. Patients who are allergic to other species of Milkweed (Asclepias syriaca) may show cross-reactivity to Asclepias Tuberosa Root extract. There is also a known 'Latex-Fruit Syndrome' where individuals allergic to natural rubber latex may react to the milky sap of plants in the Asclepias genus, though the root extract used in medicine is processed to minimize these risks.
> Important: Your healthcare provider will evaluate your complete medical history before prescribing Asclepias Tuberosa Root.
Asclepias Tuberosa Root extract is generally classified in a manner similar to FDA Pregnancy Category C.
There is no evidence that allergenic extracts are excreted into human breast milk. Because these are large proteins that are degraded into amino acids, they are unlikely to be absorbed by the nursing infant in any significant amount. Breastfeeding is generally considered safe during immunotherapy.
As noted previously, the safety of Asclepias Tuberosa Root extract for immunotherapy in children under age 5 has not been established. In older children, it is effective, but the child must be able to communicate symptoms of a systemic reaction (e.g., 'my throat feels funny' or 'my chest hurts').
Patients over the age of 65 may have co-existing cardiovascular or pulmonary diseases that increase the risk of immunotherapy. The decision to treat an elderly patient must be individualized. Particular attention must be paid to their use of beta-blockers or ACE inhibitors for hypertension.
No specific GFR-based (Glomerular Filtration Rate) adjustments are necessary. However, patients with end-stage renal disease (ESRD) on dialysis should be treated with caution due to the complexity of their fluid and electrolyte balance and potential cardiovascular instability.
No adjustments are required for patients with liver disease. The processing of allergenic proteins occurs via local and systemic proteolysis, not through hepatic metabolic pathways.
> Important: Special populations require individualized medical assessment.
The pharmacology of Asclepias Tuberosa Root extract is immunological. For diagnosis, it facilitates IgE-mediated mast cell degranulation. For therapy, it induces 'immune deviation.' This involves the induction of T-regulatory cells that produce IL-10, which suppresses the Th2 allergic response. It also promotes the production of IgG4 'blocking antibodies' that compete with IgE for allergen binding, effectively preventing the allergic cascade from starting.
| Parameter | Value |
|---|---|
| Bioavailability | N/A (Subcutaneous/Local) |
| Protein Binding | Primarily to IgE and IgG4 |
| Half-life | Variable (Proteins degraded in hours/days) |
| Tmax | 15-30 minutes (for local reaction) |
| Metabolism | Proteolysis (Protease enzymes) |
| Excretion | Cellular turnover/metabolic pathways |
Asclepias Tuberosa Root extract is a complex mixture of proteins, glycoproteins, and polysaccharides extracted from the dried roots of the plant. It contains various cardenolides (cardiac glycosides) in its raw form, although the allergenic extract is processed to focus on the proteinaceous allergens. The molecular weights of the relevant allergens typically range from 10 to 70 kDa.
It is a member of the 'Allergenic Extracts' class. Related medications include extracts for Ragweed, Timothy Grass, and various tree pollens. It is specifically a 'Non-Standardized' extract, distinguishing it from 'Standardized' extracts like those for Hymenoptera (bee) venom.
Medications containing this ingredient
Common questions about Asclepias Tuberosa Root
Asclepias Tuberosa Root extract is primarily used for the diagnosis and treatment of specific allergies. In a clinical setting, it is used in skin prick tests to identify if a patient is allergic to the proteins found in the Pleurisy Root plant. If a significant allergy is confirmed, the extract can be used in allergen immunotherapy, commonly known as 'allergy shots.' This involves giving the patient gradually increasing doses of the extract to help their immune system build a tolerance. It is not used as a standard medication for systemic diseases like infections or high blood pressure.
The most common side effects are localized reactions at the site where the extract was injected or applied to the skin. These include redness, itching, and a raised bump or swelling, often referred to as a 'wheal and flare' reaction. These symptoms usually appear within minutes and resolve within a few hours. Some patients may also experience a 'large local reaction,' where the swelling is more significant and lasts for a day or two. While these local effects are common, they are usually manageable and do not require emergency treatment.
It is generally advised to avoid alcohol on the days you receive an immunotherapy injection of Asclepias Tuberosa Root. Alcohol can cause your blood vessels to dilate (expand), which might increase the speed at which the allergen is absorbed into your bloodstream. This could theoretically increase the risk of a systemic or whole-body allergic reaction. To ensure the highest level of safety during your treatment, it is best to abstain from alcohol for at least 24 hours around your appointment. Always discuss your lifestyle habits with your allergist.
The use of Asclepias Tuberosa Root extract during pregnancy requires a very careful evaluation by a healthcare provider. It is generally recommended that allergy immunotherapy should not be started while a woman is pregnant because of the risk of anaphylaxis, which could harm the fetus. However, if a woman is already on a stable maintenance dose and is tolerating it well, her doctor may decide to continue the treatment. The dose is usually kept the same and not increased until after delivery. Always inform your allergist immediately if you become pregnant.
When used for diagnostic skin testing, Asclepias Tuberosa Root works very quickly, usually producing a visible result within 15 to 20 minutes. However, when used as a treatment (immunotherapy), the process is much slower. Most patients do not begin to feel a significant reduction in their allergy symptoms until they reach their maintenance dose, which typically takes 3 to 6 months of weekly injections. For the best long-term results, the treatment is usually continued for three to five years. Consistency is key to the success of this therapy.
Yes, you can stop taking Asclepias Tuberosa Root immunotherapy injections suddenly without experiencing any physical withdrawal symptoms. Unlike some medications like steroids or antidepressants, your body does not become dependent on allergenic extracts. However, if you stop the treatment before completing the recommended course (usually 3-5 years), your allergy symptoms are likely to return over time. You should discuss your reasons for wanting to stop with your allergist to determine the best plan for managing your allergies moving forward.
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. Depending on how long it has been since your last injection, your doctor may need to adjust your dose. If only a few days have passed, you may receive your usual dose, but if several weeks have passed, the doctor may need to reduce the dose to ensure you do not have an adverse reaction. Regularity is vital for the safety and effectiveness of the treatment.
There is no clinical evidence to suggest that Asclepias Tuberosa Root allergenic extract causes weight gain. The extract consists of proteins that are administered in very small quantities subcutaneously, and it does not affect the metabolic or hormonal systems that regulate body weight. If you experience unexpected weight gain while undergoing immunotherapy, it is likely due to other factors such as diet, lifestyle, or other medications you may be taking. You should discuss any concerns about weight with your primary care physician.
Asclepias Tuberosa Root can be taken with many medications, but there are some critical exceptions. You must tell your doctor if you are taking beta-blockers, ACE inhibitors, or MAO inhibitors, as these can make allergic reactions more dangerous or harder to treat. Additionally, antihistamines must be stopped several days before skin testing because they can block the reaction and lead to false results. Most other routine medications for chronic conditions do not interact directly with the extract, but a full review of your medication list is necessary.
The concept of 'generic' vs. 'brand name' is slightly different for allergenic extracts. Asclepias Tuberosa Root is a biological product, and different manufacturers may produce their own versions of the extract. These are generally considered 'non-standardized' products. While they are not 'generics' in the way a chemical drug like ibuprofen is, various laboratories may supply the extract. Your allergist will typically stick with one supplier for your treatment to ensure the consistency of the concentration and potency of the extract you receive.