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Medical Disclaimer: This information is for educational purposes only and is not a substitute for professional medical advice.
Non-Standardized Plant Allergenic Extract [EPC]
Phytolacca Americana Root is a non-standardized plant allergenic extract used primarily in clinical allergy testing and immunotherapy. It belongs to the class of Non-Standardized Plant Allergenic Extracts [EPC].
Name
Phytolacca Americana Root
Raw Name
PHYTOLACCA AMERICANA ROOT
Category
Non-Standardized Plant Allergenic Extract [EPC]
Drug Count
289
Variant Count
346
Last Verified
February 17, 2026
About Phytolacca Americana Root
Phytolacca Americana Root is a non-standardized plant allergenic extract used primarily in clinical allergy testing and immunotherapy. It belongs to the class of Non-Standardized Plant Allergenic Extracts [EPC].
Detailed information about Phytolacca Americana Root
This page is for informational purposes only and does not replace medical advice. Consult a qualified healthcare professional before using any medication containing Phytolacca Americana Root.
Phytolacca Americana Root, commonly known as Pokeweed root, is a complex biological substance utilized in clinical medicine primarily as a Non-Standardized Plant Allergenic Extract [EPC]. In a controlled medical setting, this extract is employed to diagnose and treat hypersensitivity reactions in patients who exhibit allergic responses to the Phytolacca americana plant. According to the FDA-approved labeling for allergenic extracts, these substances work by inducing a controlled immune response, eventually leading to desensitization (immunological tolerance).
While the raw plant is known for its systemic toxicity, the clinical extract is processed for specific therapeutic applications. Beyond its primary classification, pharmacological data suggests it interacts with various pathways, including Estrogen Receptor Agonists [MoA] and Corticosteroid Hormone Receptor Agonists [MoA]. It is important to distinguish between the highly regulated clinical extract and the raw botanical, as the former is standardized for safety in immunotherapy protocols.
At the molecular level, Phytolacca Americana Root functions as an immunomodulator. When used in immunotherapy, the extract targets the IgE-mediated allergic pathway. By introducing small, escalating doses of the allergen, the treatment shifts the immune response from a Th2-dominated (allergic) profile to a Th1-dominated profile, increasing the production of IgG4 'blocking antibodies.'
Furthermore, the provided pharmacological profile indicates activity as an Adrenergic alpha-Agonist [MoA] and Cyclooxygenase Inhibitor [MoA]. These mechanisms suggest that the extract may influence vascular tone and inflammatory prostaglandin synthesis, although its primary clinical utility remains centered on allergenic desensitization. The presence of mitogens in the root, such as pokeweed mitogen (PWM), also stimulates B-lymphocyte and T-lymphocyte proliferation, which is a key component of its immunological activity.
Phytolacca Americana Root is typically available in the following forms:
> Important: Only your healthcare provider can determine if Phytolacca Americana Root is right for your specific condition.
Dosage for Phytolacca Americana Root extract is highly individualized and must be determined through a 'dose-titration' method.
Phytolacca Americana Root allergenic extracts are not generally recommended for children under the age of 5. For older children, dosing is adjusted based on body weight and the severity of the allergic sensitivity, following the same titration principles as adults.
No specific dosage adjustments are provided for renal impairment; however, caution is advised as systemic clearance may be slowed.
No specific data exists for hepatic adjustment, but clinicians should monitor for systemic toxicity in patients with severe liver disease.
Elderly patients may have a higher risk of cardiovascular complications if a systemic reaction occurs. Dosing should be conservative, starting at the lowest possible concentration.
If a dose is missed during the build-up phase, the next dose may need to be reduced to ensure safety. If the maintenance phase is interrupted for more than two weeks, consult your allergist, as the dose may need to be stepped back to a previous level.
Signs of overdose (or accidental systemic injection) include hives, swelling of the throat, difficulty breathing, and hypotension (low blood pressure). Immediate administration of epinephrine is required in the event of a systemic reaction.
> Important: Follow your healthcare provider's dosing instructions. Do not adjust your dose without medical guidance.
> Warning: Stop taking Phytolacca Americana Root and call your doctor immediately if you experience any of these.
Prolonged use in immunotherapy is generally well-tolerated. However, some patients may develop 'serum sickness-like' symptoms, including joint pain and fever, though this is exceedingly rare with modern extracts.
Phytolacca Americana Root extracts can cause severe, life-threatening systemic allergic reactions, including anaphylaxis. This medication should only be administered by healthcare providers experienced in the treatment of anaphylaxis. Patients with unstable asthma or those taking beta-blockers may be at increased risk of severe outcomes.
Report any unusual symptoms to your healthcare provider.
Phytolacca Americana Root extract is a potent biological agent. It must never be self-administered. Patients must be screened for existing sensitivities and current health status before every injection.
According to FDA standards for allergenic extracts, a black box warning is required regarding the risk of Anaphylaxis. The extract must be administered in a facility where emergency medications (epinephrine, oxygen, IV fluids) and trained personnel are immediately available.
Patients should use caution when driving or operating machinery immediately after an injection, as some individuals experience dizziness or fatigue.
Alcohol should be avoided on the day of the injection, as it can increase vasodilation and potentially accelerate the onset of a systemic allergic reaction.
If a patient experiences a severe systemic reaction, the healthcare provider may decide to discontinue the therapy or significantly reduce the dose. There is no withdrawal syndrome associated with stopping allergenic extracts.
> Important: Discuss all your medical conditions with your healthcare provider before starting Phytolacca Americana Root.
> Important: Tell your doctor about ALL medications, supplements, and herbal products you are taking.
Patients allergic to other members of the Phytolaccaceae family may exhibit cross-reactivity. There is also anecdotal evidence of cross-sensitivity with certain latex proteins, though clinical data is limited.
> Important: Your healthcare provider will evaluate your complete medical history before prescribing Phytolacca Americana Root.
Pregnancy Category C. There are no adequate and well-controlled studies in pregnant women. While immunotherapy is generally not started during pregnancy, maintenance doses may be continued if the benefit to the mother outweighs the risk to the fetus. The primary risk is maternal anaphylaxis, which can cause fetal hypoxia (lack of oxygen).
It is not known whether the components of Phytolacca Americana Root extract pass into breast milk. Because many proteins are digested in the infant's gut, the risk is considered low, but caution should be exercised.
Safety and effectiveness in children under the age of 5 have not been established. In older children, the risk of systemic reactions is similar to that in adults, but communication of early symptoms may be more difficult.
Patients over 65 may have a higher prevalence of cardiovascular disease, making them more vulnerable to the effects of a systemic reaction. Careful evaluation of the heart and lung function is required before starting therapy.
Specific dosing for patients with kidney failure has not been studied. Clearance of the biological components may be delayed, necessitating a slower dose escalation.
No specific adjustments are recommended, but patients with liver failure should be monitored for signs of systemic toxicity, as the liver plays a role in processing circulating proteins.
> Important: Special populations require individualized medical assessment.
Phytolacca Americana Root extract works primarily as an immunomodulator. It acts on Estrogen Receptor Agonists [MoA] and Corticosteroid Hormone Receptor Agonists [MoA], which may contribute to its anti-inflammatory and mitogenic properties. By stimulating T-lymphocytes via pokeweed mitogen (PWM), it alters the cytokine environment, reducing the production of IL-4 and IL-5 (pro-allergic cytokines) and increasing IFN-gamma.
The onset of action for diagnostic testing is rapid (15-30 minutes). For immunotherapy, the therapeutic effect (reduction in allergy symptoms) typically takes 6 to 12 months of consistent treatment. Tolerance develops through the induction of T-regulatory cells.
| Parameter | Value |
|---|---|
| Bioavailability | Low (Subcutaneous) |
| Protein Binding | Variable (Albumin-bound) |
| Half-life | Not established for extract |
| Tmax | 1-2 hours (Systemic absorption) |
| Metabolism | Proteolysis (Tissue/Liver) |
| Excretion | Renal/Lymphatic |
Phytolacca Americana Root is classified as a Non-Standardized Plant Allergenic Extract [EPC]. It is related to other plant extracts like Ragweed or Timothy Grass used in allergy desensitization.
Medications containing this ingredient
Common questions about Phytolacca Americana Root
Phytolacca Americana Root is primarily used in clinical settings as an allergenic extract for the diagnosis and treatment of specific allergies. Healthcare providers use it in skin prick tests to identify if a patient is allergic to the pokeweed plant. In some cases, it is used in immunotherapy (allergy shots) to help the body build a tolerance to the allergen over time. It is not intended for general use and should only be administered by medical professionals. Because the raw plant is toxic, the clinical extract is highly regulated and diluted for safety.
The most common side effects are localized to the area where the extract was injected or applied. Patients frequently experience redness, itching, and swelling at the injection site, which usually disappears within a day or two. Some people may also experience mild hay-fever-like symptoms, such as sneezing or a runny nose, shortly after the treatment. In some cases, a mild headache or a feeling of tiredness may occur. These reactions are typically manageable and are monitored by the healthcare provider during the mandatory observation period.
It is generally advised to avoid alcohol on the day you receive a Phytolacca Americana Root injection. Alcohol can cause your blood vessels to dilate (widen), which may increase the speed at which the allergen enters your bloodstream. This can potentially increase the risk or severity of a systemic allergic reaction. Additionally, alcohol can mask some of the early warning signs of anaphylaxis, such as flushing or dizziness. Always consult your allergist about your lifestyle habits before starting immunotherapy.
Phytolacca Americana Root is classified as Pregnancy Category C, meaning there is limited data on its safety in humans. Most doctors will not start a new course of immunotherapy during pregnancy because of the risk of a severe allergic reaction, which could harm the baby. However, if a woman is already on a stable maintenance dose and is tolerating it well, the doctor may choose to continue the treatment. The main concern is maternal anaphylaxis, which can lead to a drop in blood pressure and reduced oxygen for the fetus. A thorough risk-benefit analysis with an obstetrician and allergist is required.
For diagnostic skin testing, Phytolacca Americana Root works very quickly, usually producing a result within 15 to 20 minutes. However, when used for immunotherapy (allergy shots), the process is much slower. Most patients begin to feel a reduction in their allergy symptoms during the 'maintenance phase,' which typically occurs 6 to 12 months after starting treatment. Full benefits are often not realized until the second or third year of consistent injections. It is a long-term commitment designed to change the way your immune system responds to the allergen.
Yes, you can stop taking Phytolacca Americana Root injections suddenly without experiencing withdrawal symptoms, as it is not an addictive substance. However, stopping the treatment prematurely will likely result in the return of your original allergy symptoms. If you miss doses or stop for a period and then wish to restart, you cannot simply resume at your previous dose. Your doctor will need to restart you at a much lower, safer concentration to prevent a severe reaction. Always discuss your treatment plan with your healthcare provider before making changes.
If you miss a scheduled dose of your allergenic extract, you should contact your allergist's office immediately to reschedule. The safety of the next dose depends on how long it has been since your last injection. If only a few days have passed, you may be able to continue as planned. However, if several weeks have passed, your doctor may need to reduce the dose for your next visit to ensure your immune system does not overreact. Never attempt to 'double up' on doses to make up for a missed one.
There is currently no clinical evidence to suggest that Phytolacca Americana Root allergenic extracts cause weight gain. Unlike systemic corticosteroids or certain antidepressants, allergenic extracts work specifically on the immune system's response to a single plant protein. They do not typically interfere with metabolism, appetite, or fat storage. If you notice unusual weight changes while undergoing immunotherapy, you should discuss them with your doctor to identify other potential causes. Most side effects of this treatment are localized or related to immediate immune responses.
Phytolacca Americana Root can interact with several types of medications, most notably beta-blockers and MAO inhibitors. Beta-blockers can make it very difficult for doctors to treat you if you have a severe allergic reaction, as they block the action of life-saving epinephrine. Other medications, like antihistamines, can be taken but might mask early symptoms of a reaction that your doctor needs to see. You must provide your healthcare provider with a complete list of all prescriptions, over-the-counter drugs, and herbal supplements you use. This ensures that your immunotherapy can be conducted as safely as possible.
Phytolacca Americana Root is a biological product rather than a traditional chemically synthesized drug, so the term 'generic' does not apply in the usual sense. Instead, different manufacturers may produce their own versions of 'Non-Standardized Phytolacca Americana Root Extract.' These products are considered similar but are not always interchangeable because the concentration of specific proteins can vary between manufacturers. Your allergist will typically stick with one manufacturer's extract for the duration of your treatment to ensure consistency and safety in your dosing schedule.