Sambucus Nigra Flower

Dosage for Sambucus Nigra Flower extract is highly individualized and must be determined by an allergist or immunologist based on the patient's sensitivity levels. There is no single 'standard' dose due to the non-standardized nature of the extract.

Diagnostic Dosing

• Skin Prick Test: Typically, one drop of the 1:10 or 1:20 w/v concentration is applied to the skin, which is then pricked with a sterile lancet.
• Intradermal Test: If the prick test is negative, a healthcare provider may inject 0.02 mL to 0.05 mL of a much more dilute solution (e.g., 1:1000 w/v) into the skin.

Therapeutic Dosing (Immunotherapy)

Treatment is divided into two phases:

1. 1Build-up Phase: Injections are usually given 1-3 times per week. The dose starts very low (e.g., 0.05 mL of a 1:100,000 w/v dilution) and increases incrementally (e.g., 0.1, 0.2, 0.3, 0.4, 0.5 mL) until the maintenance dose is reached.
2. 2Maintenance Phase: Once the effective dose is reached (the 'maintenance dose'), the frequency of injections is reduced to once every 2-4 weeks. This phase typically lasts for 3 to 5 years to ensure long-term desensitization.

Sambucus Nigra Flower extracts may be used in children, but the dosage must be approached with extreme caution.

• Children under 5: Use is generally limited and must be weighed against the risk of systemic reactions and the child's ability to communicate symptoms of anaphylaxis.
• Children 5 and older: Dosing follows the adult escalation protocol but may start at even lower concentrations depending on the child's allergic history and skin test reactivity. Your pediatrician or pediatric allergist will provide a specific schedule.

Renal Impairment

No specific dosage adjustments are provided in the manufacturer labeling for renal impairment. Since the extract is composed of proteins that are naturally degraded, significant accumulation is not expected. However, the patient's overall health must be considered if a systemic reaction occurs.

Hepatic Impairment

No dosage adjustments are required for patients with liver disease, as the metabolism of allergenic proteins does not rely on hepatic CYP enzymes.

Elderly Patients

Elderly patients (over 65) require careful evaluation. The primary concern is not the dose of the extract itself, but the patient's ability to tolerate a systemic reaction or the emergency medications (like epinephrine) used to treat such a reaction. Patients with underlying cardiovascular disease may be at higher risk.

Sambucus Nigra Flower extract is never for self-administration. It must be administered in a clinical setting by a healthcare professional.

• Injection Site: Subcutaneous injections for immunotherapy are typically given in the posterior aspect of the upper arm.
• Observation Period: You must remain in the doctor's office for at least 30 minutes after every injection. Most fatal or near-fatal systemic reactions occur within this window.
• Storage: Vials should be stored in a refrigerator at 2°C to 8°C (36°F to 46°F). Do not freeze. If the extract becomes cloudy or changes color, it should not be used.

If you miss an immunotherapy appointment:

• Short Delay (1-2 weeks): The doctor may repeat the last dose.
• Long Delay (3+ weeks): The doctor may need to reduce the dose and restart the build-up to avoid a systemic reaction due to a loss of tolerance.
• Never double the dose to 'catch up.'

An overdose of Sambucus Nigra Flower extract usually manifests as an immediate and severe systemic allergic reaction.

• Signs: Hives (urticaria), swelling of the throat (angioedema), wheezing, shortness of breath, rapid heart rate, or a sudden drop in blood pressure (shock).
• Emergency Measures: Administration of Epinephrine (EpiPen), oxygen, intravenous fluids, and antihistamines. If an overdose is suspected, emergency medical services must be contacted immediately.

> Important: Follow your healthcare provider's dosing instructions exactly. Do not adjust your dose or skip appointments without medical guidance.

Most patients undergoing treatment with Sambucus Nigra Flower extract will experience some form of localized reaction. These are generally not dangerous but can be uncomfortable.

• Local Redness (Erythema): Redness at the injection site that may appear immediately or several hours later. It typically resolves within 24 hours.
• Local Swelling (Edema): A raised bump or 'wheal' at the injection site. If the swelling is smaller than a half-dollar (approx. 3 cm), it is considered a normal response.
• Itching (Pruritus): Intense itching at the site of the injection or skin test. This is caused by the localized release of histamine.
• Tenderness: The injection site may feel sore or bruised for a day or two.

• Large Local Reactions: Swelling that exceeds 5-10 cm in diameter. This may require a dose adjustment for the next injection.
• Fatigue: Some patients report feeling unusually tired for several hours after an immunotherapy session.
• Mild Nasal Congestion: A slight increase in hay fever symptoms shortly after the injection.
• Headache: Mild tension-type headaches have been reported following administration.

• Generalized Urticaria: Hives appearing on parts of the body far from the injection site.
• Nausea and Abdominal Cramping: These can be early signs of a systemic reaction.
• Persistent Cough: A dry, hacking cough that may signal the beginning of respiratory distress.

> Warning: Stop taking Sambucus Nigra Flower treatment and call your doctor immediately or seek emergency care if you experience any of the following symptoms of anaphylaxis.

• Anaphylaxis: A life-threatening, whole-body allergic reaction. This is the most serious risk of Sambucus Nigra Flower extract.
• Laryngeal Edema: Swelling of the throat, making it difficult to swallow or breathe. You may hear a high-pitched sound (stridor) when breathing.
• Bronchospasm: Severe wheezing and chest tightness, similar to an acute asthma attack.
• Hypotension: A sudden, dangerous drop in blood pressure, which may cause fainting, dizziness, or loss of consciousness.
• Angioedema: Significant swelling of the face, lips, tongue, or around the eyes.
• Cyanosis: A bluish tint to the lips or fingernails, indicating a lack of oxygen in the blood.

When used correctly for 3-5 years, the 'long-term effect' of Sambucus Nigra Flower immunotherapy is intended to be a permanent or semi-permanent reduction in allergy symptoms. However, some patients may develop:

• Persistent Sensitivity: In rare cases, the patient may become more sensitive to the allergen during the build-up phase.
• Injection Site Granuloma: A small, hard lump under the skin at the site of repeated injections. This is rare and usually benign.
• Autoimmune Concerns: While theoretical, there is no robust clinical evidence suggesting that long-term allergenic extract use leads to the development of autoimmune diseases.

While Sambucus Nigra Flower extract may not always carry a specific 'Black Box' on every individual vial, the FDA requires a General Boxed Warning for the entire class of allergenic extracts.

Summary of Warning:

• Allergenic extracts can cause severe life-threatening systemic reactions, including anaphylaxis.
• Extracts should only be administered by healthcare providers prepared to manage such reactions.
• Patients with unstable asthma are at a higher risk for fatal reactions.
• Patients taking beta-blockers may be resistant to the effects of epinephrine used to treat anaphylaxis.

Report any unusual symptoms to your healthcare provider immediately. Even a 'late' reaction occurring several hours after you leave the clinic should be reported before your next dose.

Sambucus Nigra Flower extract is a potent biological product. Safety depends on accurate dosing, proper administration, and vigilant monitoring. It is strictly for use in patients with a confirmed IgE-mediated allergy. It is not a treatment for non-allergic (vasomotor) rhinitis or viral infections.

No specific FDA black box warning exists uniquely for Sambucus Nigra Flower, but it falls under the mandatory class-wide warnings for all allergenic extracts.

• Anaphylaxis Risk: Injections can cause sudden, life-threatening allergic reactions.
• Clinical Setting: Must be administered in a facility equipped with oxygen, IV fluids, and emergency medications (epinephrine, antihistamines, corticosteroids).
• Observation: Patients must be observed for at least 30 minutes post-injection.

Allergic Reactions / Anaphylaxis Risk

The risk of anaphylaxis is highest during the build-up phase or when starting a new vial of extract (even if it is the same concentration). Patients must be screened for 'high-risk' factors, such as high pollen counts in the environment on the day of the injection, which can lower the threshold for a systemic reaction.

Asthma Status

Patients with asthma must have their condition well-controlled before receiving a Sambucus Nigra Flower injection. If your peak flow meter reading is significantly lower than your personal best, or if you are experiencing an asthma flare, the injection must be postponed. Uncontrolled asthma is the leading risk factor for fatal reactions to immunotherapy.

Cardiovascular Disease

Patients with pre-existing heart disease, including uncontrolled hypertension or arrhythmias, are at higher risk. If a systemic reaction occurs, the stress on the heart and the need for epinephrine can exacerbate cardiac conditions.

• Pre-Injection Screening: Your provider will ask about your current health, any new medications, and how you reacted to the previous dose.
• Peak Flow Monitoring: For asthmatic patients, a peak flow test may be required before administration.
• Vital Signs: Blood pressure and heart rate may be checked if you feel unwell after the dose.
• Skin Site Inspection: The provider will measure any local swelling before you are cleared to leave the office.

Generally, Sambucus Nigra Flower does not cause drowsiness. However, if you experience a systemic reaction or are given antihistamines to treat a local reaction, your ability to drive or operate machinery may be impaired. It is recommended to wait until you are sure you feel normal before driving after an injection.

Alcohol should be avoided for several hours before and after your injection. Alcohol can cause vasodilation (widening of blood vessels), which may increase the rate of allergen absorption and potentially increase the risk or severity of a systemic reaction.

If you decide to stop Sambucus Nigra Flower immunotherapy, there are no 'withdrawal' symptoms like those seen with opioids or antidepressants. However, your allergy symptoms will likely return to their baseline levels over time. If treatment is stopped during the build-up phase, the progress toward tolerance will be lost. Talk to your doctor about the best time to conclude your 3-5 year course of treatment.

> Important: Discuss all your medical conditions, especially respiratory or heart issues, with your healthcare provider before starting Sambucus Nigra Flower.

There are no drugs that are strictly 'contraindicated' in the sense of a chemical incompatibility, but certain medications make the use of Sambucus Nigra Flower extract unacceptably dangerous:

• Non-Selective Beta-Blockers: Drugs like Propranolol or Nadolol. In the event of anaphylaxis, beta-blockers can block the life-saving effects of epinephrine, making a systemic reaction much harder to treat and potentially fatal.

• Selective Beta-Blockers: Drugs like Atenolol or Metoprolol. While slightly less risky than non-selective versions, they still pose a significant risk during an allergic emergency.
• ACE Inhibitors: Drugs like Lisinopril or Enalapril. These medications can interfere with the body's ability to recover from a drop in blood pressure during anaphylaxis and may increase the risk of severe angioedema.
• MAO Inhibitors (MAOIs): Used for depression. These can potentiate the effects of epinephrine, leading to a hypertensive crisis if an emergency occurs.

• Antihistamines: Drugs like Loratadine (Claritin), Cetirizine (Zyrtec), or Diphenhydramine (Benadryl). These must be stopped 3 to 7 days before a diagnostic skin test, as they will suppress the wheal and flare reaction, leading to a false-negative result. They do not need to be stopped for immunotherapy unless directed by your doctor.
• Tricyclic Antidepressants (TCAs): Like Amitriptyline. Similar to MAOIs, these can affect how your body responds to emergency medications.
• Systemic Corticosteroids: Long-term use of prednisone may suppress skin test reactivity and may also mask the early signs of a systemic reaction during immunotherapy.

• High-Fat Meals: No direct interaction with the extract, but heavy meals immediately before an injection may cause gastrointestinal discomfort that could be confused with a systemic reaction.
• Alcohol: As mentioned, alcohol increases vasodilation and should be avoided.

• Sambucus Nigra Supplements (Elderberry): If you are taking oral elderberry supplements, inform your doctor. While the proteins in the flower (pollen) and the fruit (berry) differ, there may be cross-reactivity that could affect your sensitivity levels.
• Immune-Stimulating Herbs: Herbs like Echinacea or Astragalus may theoretically interfere with the immune-modulating goals of immunotherapy, though clinical data is lacking.

• Skin Prick Tests: The extract itself is the tool for the test. However, other tests like the 'Histamine Release Test' or 'Specific IgE (RAST/ImmunoCAP)' blood tests will be affected by immunotherapy, as the goal is to change these levels over time.

> Important: Tell your doctor about ALL medications, supplements, and herbal products you are taking, especially any 'heart' or 'blood pressure' pills.

Sambucus Nigra Flower extract must NEVER be used in the following circumstances:

1. 1Severe, Uncontrolled Asthma: Patients with an FEV1 (forced expiratory volume) consistently below 70% of predicted value are at an extreme risk of a fatal respiratory reaction.
2. 2Recent Myocardial Infarction (Heart Attack): Within the last 3-6 months. The risk of a systemic reaction and the subsequent need for epinephrine could cause a second cardiac event.
3. 3History of Severe Anaphylaxis to this Specific Extract: If a patient has previously had a near-fatal reaction to Sambucus Nigra Flower, the risks of continuing treatment usually outweigh the benefits.
4. 4Beta-Blocker Therapy: As noted, the inability to respond to epinephrine is a major contraindication in many clinical guidelines.

Conditions requiring a careful risk-benefit analysis by your specialist:

• Pregnancy: Immunotherapy is generally not started during pregnancy, though it may be continued if the patient is already on a stable maintenance dose.
• Autoimmune Diseases: Patients with active systemic lupus erythematosus (SLE) or rheumatoid arthritis may experience a flare of their condition due to the immune stimulation of the extract.
• Malignancy: Patients undergoing active chemotherapy or with certain cancers may have altered immune responses.
• Young Children (Under 5): Due to the difficulty in diagnosing and treating anaphylaxis in this age group.

Patients allergic to Sambucus Nigra Flower may also show cross-sensitivity to:

• Other members of the Adoxaceae family.
• Certain other pollens that share similar profilin proteins.
• In rare cases, there may be cross-reactivity with elderberries (the fruit), though this is less common than pollen-to-pollen cross-reactivity.

> Important: Your healthcare provider will evaluate your complete medical history and current health status before prescribing Sambucus Nigra Flower.

Pregnancy Category C: Animal reproduction studies have not been conducted with Sambucus Nigra Flower extract. It is also not known whether the extract can cause fetal harm when administered to a pregnant woman.

• Risk Summary: The primary risk during pregnancy is not the extract itself, but the potential for maternal anaphylaxis, which can cause fetal hypoxia (lack of oxygen).
• Clinical Recommendation: Most allergists recommend against starting a new course of Sambucus Nigra immunotherapy during pregnancy. If a woman becomes pregnant while on a stable maintenance dose and is tolerating it well, the treatment may be continued, but the dose is typically not increased until after delivery.

It is not known whether Sambucus Nigra allergenic proteins or the antibodies they induce are excreted in human milk. Because many drugs are excreted in human milk, caution should be exercised. However, since the treatment involves naturally occurring proteins and the goal is to produce protective IgG antibodies (which are naturally present in breast milk), many clinicians consider it safe to continue immunotherapy while breastfeeding. Talk to your doctor about your specific situation.

• Efficacy: Immunotherapy has been shown to be effective in children for reducing allergic rhinitis and preventing the progression to asthma.
• Safety: The main concern is the child's ability to report early symptoms of a reaction (e.g., an itchy throat or 'funny feeling' in the chest).
• Dosing: Pediatric patients usually follow the same weight-to-volume dosing as adults, as the immune response is not strictly weight-dependent.

Patients over 65 are at a higher risk for complications from Sambucus Nigra Flower extract due to:

• Polypharmacy: A higher likelihood of taking beta-blockers or ACE inhibitors.
• Cardiovascular Reserve: A decreased ability to survive the physiological stress of anaphylaxis.
• Renal Function: While not a primary route of metabolism, decreased renal clearance should be noted in overall health assessments.

There are no specific guidelines for dosage adjustment in renal impairment. However, clinicians should be aware that if a patient requires emergency medications for a reaction, the clearance of those medications (like certain antihistamines) may be delayed in patients with kidney disease.

No dosage adjustment is required. The liver is not the primary site of action or degradation for allergenic protein extracts.

> Important: Special populations require individualized medical assessment and more frequent monitoring during the build-up phase of treatment.

Sambucus Nigra Flower extract functions as an immunomodulator. At the molecular level, the extract contains various proteins and glycoproteins that act as antigens.

• Diagnostic: These antigens cross-link allergen-specific IgE on the surface of cutaneous mast cells, triggering the release of histamine via the FcεRI receptor.
• Therapeutic: Repeated exposure leads to the 'desensitization' of mast cells and basophils. It also induces T-cell anergy (unresponsiveness) and promotes the expansion of Regulatory T-cells (Tregs). These Tregs produce IL-10, which signals B-cells to switch production from IgE to IgG4, the protective blocking antibody.

• Onset of Action: For skin testing, the onset is 15-20 minutes. For immunotherapy, clinical improvement typically takes 6 to 12 months of consistent treatment.
• Duration of Effect: The diagnostic effect lasts only as long as the mediators are present (a few hours). The therapeutic effect can last for 3 to 5 years or longer after the completion of a full course.
• Dose-Response: There is a clear dose-response relationship in immunotherapy; higher maintenance doses are generally more effective but carry a higher risk of systemic reactions.

| Parameter | Value |

|---|---|

| Bioavailability | Low (localized) for SPT; Variable for SCIT |

| Protein Binding | Minimal (binds to IgE/IgG antibodies) |

| Half-life | Minutes to hours (proteins); Years (immune memory) |

| Tmax | 15-20 minutes (diagnostic wheal) |

| Metabolism | Proteolytic degradation (proteases) |

| Excretion | Renal (as peptide fragments) |

• Composition: A complex mixture of water-soluble proteins, glycoproteins, and polysaccharides.
• Major Allergens: While not as extensively characterized as 'Phl p 1' (Timothy grass), Sambucus Nigra contains various pollen-specific proteins in the 10-70 kDa range.
• Solubility: Highly soluble in buffered saline solutions used for extraction.

Sambucus Nigra Flower is classified as a Non-Standardized Plant Allergenic Extract. It is grouped with other deciduous tree and shrub pollens used in clinical immunology. It is distinct from 'Standardized Extracts' (like Cat Hair or Grass Pollen) which have federally mandated potency units.