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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]
Stachys Officinalis, also known as Wood Betony, is utilized in clinical immunology as a Non-Standardized Plant Allergenic Extract for the diagnosis and treatment of specific hypersensitivity reactions and allergic sensitization.
Name
Stachys Officinalis
Raw Name
STACHYS OFFICINALIS
Category
Non-Standardized Plant Allergenic Extract [EPC]
Drug Count
5
Variant Count
5
Last Verified
February 17, 2026
About Stachys Officinalis
Stachys Officinalis, also known as Wood Betony, is utilized in clinical immunology as a Non-Standardized Plant Allergenic Extract for the diagnosis and treatment of specific hypersensitivity reactions and allergic sensitization.
Detailed information about Stachys Officinalis
This page is for informational purposes only and does not replace medical advice. Consult a qualified healthcare professional before using any medication containing Stachys Officinalis.
Stachys Officinalis, commonly referred to as Wood Betony or Bishop’s Wort, is a perennial herbaceous plant belonging to the Lamiaceae (mint) family. In a clinical and pharmacological context, Stachys Officinalis is classified as a Non-Standardized Plant Allergenic Extract [EPC]. This classification indicates that the substance is used primarily by allergists and immunologists to diagnose or treat allergic sensitivities through skin testing or immunotherapy (allergy shots). Unlike 'standardized' extracts, which have a fixed potency measured in Bioequivalent Allergy Units (BAU), non-standardized extracts like Stachys Officinalis are prepared from raw botanical materials and are measured in terms of weight-to-volume (w/v) or Protein Nitrogen Units (PNU).
Historically, Stachys Officinalis has a deep-rooted presence in European folk medicine, but its modern pharmaceutical application is strictly regulated under the FDA’s biologics framework. As a member of the Non-Standardized Plant Allergenic Extract class, it is used to identify patients who exhibit Type I hypersensitivity (immediate allergic reactions) to the proteins found within the plant's pollen or leaf matter. According to the FDA (2024), these extracts are essential tools for clinicians managing complex environmental allergies. The extract is typically prepared by macerating the plant material in a glycerin-based or aqueous solution to extract the allergenic proteins (antigens).
The mechanism of action for Stachys Officinalis as an allergenic extract is centered on the modulation of the human immune system, specifically the interaction between antigens and Immunoglobulin E (IgE) antibodies. When used for diagnostic purposes (such as a skin prick test), the extract is introduced into the epidermis. If the patient is sensitized, the specific IgE antibodies bound to mast cells recognize the Stachys Officinalis proteins, triggering mast cell degranulation. This release of histamine and other inflammatory mediators results in a 'wheal and flare' reaction (a raised bump and redness), confirming the allergy.
When used for therapeutic purposes (Allergen Immunotherapy or AIT), the mechanism is more complex. The goal is to induce 'desensitization' or 'immunological tolerance.' By administering gradually increasing doses of the Stachys Officinalis extract, the body shifts its immune response from a Th2-dominated profile (which promotes IgE and allergic inflammation) to a Th1-dominated profile. This process stimulates the production of 'blocking antibodies' known as IgG4. These IgG4 antibodies compete with IgE for the allergen binding sites, effectively preventing the allergic cascade. Additionally, the therapy increases the activity of Regulatory T-cells (Tregs), which secrete interleukin-10 (IL-10) to suppress allergic inflammation at the cellular level.
Because Stachys Officinalis allergenic extracts are biological proteins administered via subcutaneous (under the skin) or epicutaneous (on the skin) routes, they do not follow traditional small-molecule pharmacokinetics (ADME).
Stachys Officinalis allergenic extract is indicated for the following clinical uses:
Stachys Officinalis is available in several specialized formulations for clinical use:
> Important: Only your healthcare provider, typically an allergist or immunologist, can determine if Stachys Officinalis is right for your specific condition. Administration must occur in a clinical setting equipped to handle emergency reactions.
Dosage for Stachys Officinalis must be highly individualized based on the patient's level of sensitivity, which is determined by initial skin testing. There is no 'standard' dose for all patients.
Stachys Officinalis extracts are used in pediatric populations for both diagnosis and treatment. However, the safety and efficacy have not been established in children under the age of 5. For children over 5, the dosing schedule is generally similar to adults but may be adjusted more conservatively (smaller increments) to minimize the risk of systemic reactions. Pediatric patients must be monitored even more closely for signs of respiratory distress following administration.
No specific dosage adjustments are required for patients with renal impairment, as the allergenic proteins are primarily metabolized by proteases. However, if the patient is on medications for kidney-related hypertension (like ACE inhibitors), caution is advised due to increased anaphylaxis risk.
No dosage adjustments are necessary for hepatic impairment. The clearance of biological allergens does not rely on the cytochrome P450 system.
Geriatric patients (over 65) should be evaluated for cardiovascular stability before starting Stachys Officinalis immunotherapy. If an elderly patient has significant heart disease, the risk of using epinephrine to treat a potential reaction must be weighed against the benefits of the therapy.
Stachys Officinalis allergenic extract is NEVER for self-administration. It must be administered by a trained healthcare professional in a medical facility.
In the context of immunotherapy, a missed dose can disrupt the desensitization process.
An 'overdose' in the context of Stachys Officinalis refers to the administration of a dose higher than the patient's current tolerance level. This is a medical emergency.
> Important: Follow your healthcare provider's dosing instructions exactly. Do not attempt to adjust your dose or administration schedule without medical guidance.
Most patients receiving Stachys Officinalis extracts will experience some form of local reaction. These are generally not dangerous but can be uncomfortable.
> Warning: Stop taking Stachys Officinalis and call your doctor immediately or seek emergency care if you experience any of these symptoms of anaphylaxis:
There are no known 'toxic' long-term effects of Stachys Officinalis extracts on organs like the liver or kidneys. The primary long-term effect is a permanent change in the immune system's response to the plant. In rare cases, chronic 'Large Local Reactions' can lead to minor scarring or thickening of the skin at the injection sites (subcutaneous nodules). These are usually benign and resolve if the injection site is rotated.
Allergenic extracts, including Stachys Officinalis, carry a class-wide FDA-mandated warning regarding the risk of severe systemic reactions.
Report any unusual symptoms, even if they seem minor, to your healthcare provider immediately. Delayed reactions can occur up to 6 hours after administration.
Stachys Officinalis extract is a potent biological substance. It is not a 'natural' supplement in the context of its clinical use; it is an immunomodulator. Patients must be aware that the very substance used to treat their allergy can, in certain circumstances, trigger a severe allergic event. You must inform your doctor if you have had a recent illness, as even a common cold can lower your 'reaction threshold' and make an immunotherapy injection more dangerous.
No FDA black box warnings for Stachys Officinalis specifically, but it falls under the general warning for all Non-Standardized Allergenic Extracts. The warning states that these products can cause severe, life-threatening systemic reactions, including anaphylaxis. It further specifies that the risk is higher in patients with symptomatic asthma and that the extract should only be administered in settings where emergency resuscitative equipment and personnel are immediately available.
Unlike many drugs, Stachys Officinalis does not require routine blood counts or liver function tests. Instead, monitoring is clinical:
Most patients can drive themselves to and from their appointments. However, if you experience a systemic reaction or are given antihistamines/epinephrine, you should not drive until the symptoms have fully resolved and the medication effects have worn off.
Alcohol should be avoided for several hours before and after an injection. Alcohol causes vasodilation (widening of blood vessels), which can speed up the absorption of the allergen into the bloodstream, potentially increasing the risk of a systemic reaction.
Stopping Stachys Officinalis immunotherapy does not cause 'withdrawal' symptoms. However, the allergic symptoms that the therapy was treating may gradually return over several months if the maintenance phase was not completed (usually 3–5 years of treatment is required for lasting results).
> Important: Discuss all your medical conditions, especially respiratory or heart issues, with your healthcare provider before starting Stachys Officinalis.
There are no direct food interactions with Stachys Officinalis extract. However, patients with a 'Wood Betony' allergy may sometimes experience Oral Allergy Syndrome (OAS) with certain related herbs or foods in the Lamiaceae family (like mint, oregano, or basil). If you notice an itchy mouth after eating these herbs, inform your allergist.
For each major interaction, the management strategy usually involves either switching the offending medication (e.g., moving from a beta-blocker to a calcium channel blocker) or performing a very careful risk-benefit analysis before proceeding with immunotherapy.
> Important: Tell your doctor about ALL medications, supplements, and herbal products you are taking, especially those for blood pressure or heart rhythm.
There are several scenarios where Stachys Officinalis extract must NEVER be used:
These conditions require careful consideration by the physician:
Patients allergic to Stachys Officinalis may also react to other members of the Lamiaceae family, including:
If you have had a severe reaction to any of these plants, you must inform your doctor before undergoing a skin test for Stachys Officinalis.
> Important: Your healthcare provider will evaluate your complete medical history and current lung function before prescribing Stachys Officinalis.
Stachys Officinalis allergenic extract is classified as FDA Pregnancy Category C. This means there have been no adequate and well-controlled studies in pregnant women.
It is generally considered safe to continue Stachys Officinalis immunotherapy while breastfeeding. The allergenic proteins are broken down in the mother's tissues and are not known to pass into breast milk in a form that would sensitize or harm the nursing infant. However, the mother should be monitored for systemic reactions as usual.
In patients over 65, the decision to use Stachys Officinalis must be based on 'biological age' rather than 'chronological age.'
There are no specific guidelines for dose adjustment in renal impairment. However, clinicians should be cautious if the patient is on dialysis, as the timing of immunotherapy should not coincide with dialysis sessions to avoid confusing a drug reaction with a dialysis-related complication.
No adjustments are required. The liver is not significantly involved in the processing of injected allergenic proteins.
> Important: Special populations require individualized medical assessment and often a more conservative 'build-up' schedule.
Stachys Officinalis extract works through active immunization. The primary molecular targets are the High-Affinity IgE Receptors (FcεRI) located on the surface of mast cells and basophils.
| Parameter | Value |
|---|---|
| Bioavailability | N/A (Subcutaneous/Epicutaneous) |
| Protein Binding | Primarily binds to IgE and IgG4 antibodies |
| Half-life | Proteins are degraded within hours; Immunological effect lasts years |
| Tmax | 15–30 minutes for systemic absorption of proteins |
| Metabolism | Tissue proteases and endocytosis by dendritic cells |
| Excretion | Minimal renal excretion of peptide fragments |
Stachys Officinalis is a Non-Standardized Plant Allergenic Extract. It belongs to the broader category of Biologicals. Related medications include extracts for other Lamiaceae members (e.g., Sage extract) or other common plant allergens like Ragweed or Oak, though these are often 'Standardized' while Stachys remains 'Non-Standardized.'
Common questions about Stachys Officinalis
In a clinical setting, Stachys Officinalis extract is used primarily for the diagnosis and treatment of allergic sensitivities. Allergists use it in skin prick tests to determine if a patient is allergic to the Wood Betony plant. If an allergy is confirmed and symptoms are severe, the extract is used in 'allergy shots' (immunotherapy) to desensitize the patient's immune system. This process helps reduce symptoms like sneezing, itchy eyes, and asthma caused by exposure to the plant. It is not used as a general medication for other conditions in mainstream medicine.
The most common side effects are localized to the site where the extract was applied or injected. Patients frequently experience redness, itching, and a small raised bump (wheal) similar to a mosquito bite. These reactions usually appear within minutes and resolve within a few hours. Some patients may also experience a 'large local reaction,' where the swelling spreads across the arm, but this is less common. Systemic side effects like tiredness or mild congestion can occur but are generally rare and short-lived.
It is strongly recommended to avoid alcohol consumption on the days you receive a Stachys Officinalis injection or skin test. Alcohol causes your blood vessels to dilate (expand), which can lead to the allergenic extract being absorbed into your bloodstream much faster than intended. This rapid absorption significantly increases the risk of a dangerous systemic allergic reaction or anaphylaxis. Furthermore, alcohol can mask the early symptoms of a reaction, making it harder for you or your doctor to identify an emergency. Always wait at least 24 hours after an injection before consuming alcohol.
Stachys Officinalis is generally not started during pregnancy because the risk of a severe allergic reaction (anaphylaxis) could be life-threatening to both the mother and the fetus. Anaphylaxis can cause a dangerous drop in blood pressure and reduce oxygen flow to the baby. However, if a woman is already on a stable 'maintenance' dose of allergy shots before becoming pregnant, her doctor may choose to continue the treatment at that same dose. The dosage is never increased during pregnancy. Decisions are made on a case-by-case basis by an allergy specialist.
For diagnostic purposes, Stachys Officinalis works almost instantly, with skin test results appearing in about 15 to 20 minutes. For therapeutic purposes (allergy shots), the process is much slower. Most patients do not notice a significant reduction in their allergy symptoms until they reach the 'maintenance phase' of treatment, which usually takes 3 to 6 months of weekly injections. Full, long-lasting clinical benefits typically require a commitment to the treatment for 3 to 5 years. Patience is essential for the immune system to successfully retrain itself.
Yes, you can stop taking Stachys Officinalis immunotherapy suddenly without experiencing physical withdrawal symptoms like those seen with narcotics or antidepressants. However, stopping the treatment prematurely—especially before the 3-year mark—usually means that your allergy symptoms will eventually return. The 'tolerance' that the shots were building will not be permanent. If you need to stop treatment due to side effects or lifestyle changes, discuss a plan with your allergist. They can advise you on the likelihood of your symptoms returning based on how much treatment you have already completed.
If you miss a scheduled allergy shot for Stachys Officinalis, you should contact your allergist's office as soon as possible to reschedule. Do not simply wait for your next appointment and expect to receive the next higher dose. Because the treatment involves building up your tolerance, a gap in treatment may require your doctor to repeat your last dose or even reduce the dose to ensure your safety. If you miss several weeks of treatment, you may need to go back several steps in your dosing schedule to prevent a severe reaction when you resume.
There is no clinical evidence to suggest that Stachys Officinalis allergenic extract causes weight gain. Unlike systemic corticosteroids (like prednisone), which are known to affect metabolism and appetite, allergenic extracts are proteins that work specifically on the immune system's allergic pathways. They do not contain hormones or calories that would lead to weight changes. If you experience weight gain while undergoing immunotherapy, it is likely due to other factors or medications, and you should discuss this with your primary care physician.
Stachys Officinalis can be taken alongside many common medications, but there are critical exceptions. You must inform your doctor if you are taking beta-blockers, ACE inhibitors, or MAO inhibitors, as these can make allergic reactions much more dangerous and difficult to treat. Antihistamines should be avoided before skin testing because they will block the reaction and lead to an incorrect diagnosis. Most other routine medications for conditions like cholesterol or diabetes do not interact with the extract. Always provide your allergist with a complete and updated list of all your medications.
The concept of 'generic' vs. 'brand name' is slightly different for allergenic extracts. Stachys Officinalis is a biological product, and various laboratories (such as Greer, HollisterStier, or ALK) produce their own versions of the extract. While these are not 'generics' in the traditional pill sense, they are essentially equivalent products. However, because these are non-standardized extracts, doctors usually prefer to keep a patient on the extract from the same manufacturer throughout their treatment to ensure the most consistent potency and safety.