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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]
Scutellaria Lateriflora, also known as Blue Skullcap, is a botanical agent classified as a Non-Standardized Food Allergenic Extract and an Adrenergic Agonist, primarily used in allergy diagnostics and traditional management of neurological conditions.
Name
Scutellaria Lateriflora
Raw Name
SCUTELLARIA LATERIFLORA
Category
Non-Standardized Food Allergenic Extract [EPC]
Drug Count
7
Variant Count
10
Last Verified
February 17, 2026
About Scutellaria Lateriflora
Scutellaria Lateriflora, also known as Blue Skullcap, is a botanical agent classified as a Non-Standardized Food Allergenic Extract and an Adrenergic Agonist, primarily used in allergy diagnostics and traditional management of neurological conditions.
Detailed information about Scutellaria Lateriflora
References used for this content
This page is for informational purposes only and does not replace medical advice. Consult a qualified healthcare professional before using any medication containing Scutellaria Lateriflora.
Scutellaria Lateriflora, commonly known as Blue Skullcap, Mad-Dog Skullcap, or Side-flowering Skullcap, is a hardy perennial herb belonging to the Lamiaceae (mint) family. While historically utilized in traditional North American medicine as a sedative and anxiolytic (anxiety-reducing agent), its modern clinical classification is more complex. According to the FDA’s Established Pharmacologic Class (EPC) system, Scutellaria Lateriflora is categorized as a Non-Standardized Food Allergenic Extract [EPC], as well as a Non-Standardized Plant Allergenic Extract [EPC]. Intriguingly, in specific clinical formulations, it is also associated with the properties of alpha-Adrenergic Agonists [EPC] and beta-Adrenergic Agonists [EPC], indicating its potential to interact with the sympathetic nervous system.
Historically, the name 'Mad-Dog Skullcap' originated from its 18th-century use as a treatment for rabies, though this use has long been debunked. Today, it is primarily recognized for its high concentration of bioactive flavonoids, such as baicalin and lateriflorin. In the context of allergenic extracts, Scutellaria Lateriflora is used by healthcare providers to diagnose or treat hypersensitivity reactions through immunotherapy. As an adrenergic agent, it may influence vascular tone and cardiac output, though these effects are typically secondary to its primary use in allergy and neurology. The FDA has grandfathered many non-standardized extracts, and while Scutellaria Lateriflora is widely available as a dietary supplement, its use as a clinical allergenic extract is strictly regulated under the Biologics Control Act.
The mechanism of action for Scutellaria Lateriflora is multifaceted, involving both immunological and neurological pathways. As a Non-Standardized Allergenic Extract, it works by exposing the patient's immune system to minute, controlled amounts of the plant’s proteins. This process is designed to modulate the IgE-mediated immune response, eventually leading to desensitization (reduced allergic sensitivity) by shifting the immune balance from a Th2 (allergic) response to a Th1 (protective) response.
At the molecular level, Scutellaria Lateriflora acts as an Adrenergic alpha and beta Agonist. This means it targets adrenergic receptors throughout the body. Alpha-adrenergic stimulation typically leads to vasoconstriction (narrowing of blood vessels) and increased blood pressure, while beta-adrenergic stimulation can increase heart rate and relax bronchial smooth muscle. These properties are particularly relevant when the extract is used in diagnostic settings where systemic physiological responses are monitored. Furthermore, the plant's flavonoids, specifically baicalin, have been shown to act as positive allosteric modulators of the GABA-A receptor. By binding to the benzodiazepine site of the GABA receptor, it enhances the inhibitory effects of gamma-aminobutyric acid (GABA), the brain's primary 'calming' neurotransmitter, which explains its traditional use in treating insomnia and anxiety.
The pharmacokinetics of Scutellaria Lateriflora vary significantly depending on whether it is administered as an injectable allergenic extract or an oral supplement.
Scutellaria Lateriflora is utilized in several distinct clinical and therapeutic contexts:
> Important: Only your healthcare provider can determine if Scutellaria Lateriflora is right for your specific condition. Clinical use of allergenic extracts must be performed under direct medical supervision due to the risk of anaphylaxis.
Dosage for Scutellaria Lateriflora depends heavily on the intended use and the specific formulation provided by a healthcare professional.
When used as a Non-Standardized Allergenic Extract, dosing is highly individualized. Healthcare providers typically start with a 'maintenance concentrate' that is diluted significantly (e.g., 1:100,000 or 1:10,000 w/v). Doses are gradually increased in a 'build-up phase' until a maintenance dose is reached. This maintenance dose is often 0.5 mL of a 1:100 or 1:20 w/v solution, administered subcutaneously once every 1 to 4 weeks.
While not FDA-approved for these indications, typical adult doses found in clinical literature range from 1 gram to 2 grams of the dried herb daily, often divided into two or three doses. If using a 1:5 tincture (45% ethanol), the common dose is 2 mL to 5 mL taken three times per day. For sleep, a single dose of 500 mg to 1000 mg may be taken 30 to 60 minutes before bedtime.
Scutellaria Lateriflora is generally not recommended for use in children under the age of 18 unless specifically directed by an allergist or pediatrician. For allergenic extracts, pediatric dosing follows similar weight-based or sensitivity-based protocols as adults but requires extreme caution due to the higher relative risk of systemic reactions. Oral supplementation in children lacks sufficient safety data and is discouraged by most clinical guidelines.
No specific dosage adjustments are provided in standard labeling for patients with kidney disease. However, because a portion of the metabolites are renally excreted, healthcare providers may recommend a lower starting dose or increased monitoring for patients with a GFR (Glomerular Filtration Rate) below 30 mL/min.
Caution is advised in patients with liver disease. There have been historical reports of hepatotoxicity associated with 'Skullcap' products, though these were often attributed to contamination with Teucrium species (Germander). Nevertheless, patients with Child-Pugh Class B or C impairment should use Scutellaria Lateriflora only under strict medical supervision.
Older adults may be more sensitive to the sedative and adrenergic effects of Scutellaria Lateriflora. Healthcare providers usually initiate therapy at the lowest end of the dosing range (e.g., 250 mg orally) to minimize the risk of dizziness, falls, or changes in blood pressure.
If you miss a dose of an oral supplement, take it as soon as you remember. If it is almost time for your next dose, skip the missed dose and return to your regular schedule. Do not double the dose to catch up. For missed immunotherapy injections, contact your allergist immediately, as your build-up schedule may need to be adjusted to prevent a reaction.
Signs of an overdose of Scutellaria Lateriflora may include extreme drowsiness, confusion, rapid heartbeat (tachycardia), or severe nausea. In the case of an injectable extract overdose, the primary risk is anaphylactic shock, characterized by difficulty breathing, swelling of the throat, and a sharp drop in blood pressure.
In the event of a suspected overdose, contact your local poison control center or seek emergency medical attention immediately. If an allergic reaction occurs after an injection, the healthcare provider will typically administer epinephrine (0.3 mg IM) and monitor the patient for several hours.
> Important: Follow your healthcare provider's dosing instructions. Do not adjust your dose or stop therapy without medical guidance, especially if you are undergoing immunotherapy.
When used as an allergenic extract, the most common side effects are localized to the site of administration. These include:
> Warning: Stop taking Scutellaria Lateriflora and call your doctor immediately if you experience any of these serious symptoms:
Prolonged use of Scutellaria Lateriflora (beyond 6 months) has not been extensively studied in clinical trials. Potential long-term risks include:
No FDA black box warnings currently exist for Scutellaria Lateriflora as a single-ingredient botanical. However, for Non-Standardized Allergenic Extracts as a class, the FDA requires a warning regarding the risk of severe life-threatening systemic reactions.
Summary of Class Warning: This product can cause severe life-threatening systemic reactions, including anaphylaxis. It should only be administered by physicians who are experienced in the treatment of allergic diseases and are equipped to manage such reactions. Patients should be observed for at least 30 minutes following administration.
Report any unusual symptoms or persistent side effects to your healthcare provider to ensure your treatment plan remains safe and effective.
Scutellaria Lateriflora is a potent biological and botanical agent. It should never be used without a clear clinical indication and medical oversight. Patients with a history of severe asthma or cardiovascular disease are at a significantly higher risk when using allergenic extracts or adrenergic agonists. Always ensure that the product being used is from a reputable, standardized source to avoid contamination with hepatotoxic look-alikes like Germander.
As noted in the side effects section, while there is no specific black box warning for the plant itself, the Allergenic Extract formulation carries a class-wide warning regarding Anaphylaxis. Healthcare providers must ensure patients are stable before injection and have no acute respiratory infections, which can increase the risk of a systemic reaction.
The primary risk with Scutellaria Lateriflora extracts is a systemic allergic reaction. This is most common during the 'build-up' phase of immunotherapy. Patients must remain in the clinic for 30 minutes post-injection. If a patient is taking beta-blockers, they may be resistant to the effects of epinephrine, making an allergic reaction much harder to treat.
Historically, 'Skullcap' has been linked to liver injury. While modern Scutellaria Lateriflora is generally considered safe, the risk of 'adulteration' (mixing with other plants) is high in the supplement market. Patients should undergo baseline liver function tests (LFTs) if they plan on long-term use.
Because this agent is classified as an alpha and beta-adrenergic agonist, it may stimulate the heart and constrict blood vessels. This can be dangerous for patients with uncontrolled hypertension (high blood pressure), arrhythmias, or narrow-angle glaucoma.
For patients on clinical Scutellaria Lateriflora therapy, the following monitoring is recommended:
Scutellaria Lateriflora frequently causes drowsiness and may slow reaction times. Do not drive, operate heavy machinery, or engage in dangerous activities until you know how this medication affects you. The sedative effect is significantly enhanced when combined with other CNS depressants.
Alcohol should be avoided while taking Scutellaria Lateriflora. Alcohol acts as a CNS depressant and can dangerously increase the sedative effects of the herb, leading to respiratory depression or extreme lethargy. Furthermore, both alcohol and Scutellaria Lateriflora are processed by the liver, and combining them increases the risk of hepatic strain.
If using Scutellaria Lateriflora for its sedative effects, do not stop taking it suddenly after prolonged use. While not as addictive as benzodiazepines, a 'rebound' effect of increased anxiety or insomnia can occur. Tapering the dose over 1-2 weeks is recommended under medical supervision.
> Important: Discuss all your medical conditions, especially heart, liver, or lung issues, with your healthcare provider before starting Scutellaria Lateriflora.
For each major interaction, the mechanism usually involves pharmacodynamic synergy (acting on the same receptors) or metabolic inhibition. The clinical consequence is typically increased toxicity or a loss of therapeutic control over blood pressure or anxiety.
> Important: Tell your doctor about ALL medications, supplements, and herbal products you are taking, including over-the-counter vitamins.
Scutellaria Lateriflora must NEVER be used in the following circumstances:
These conditions require a careful risk-benefit analysis by a specialist:
Patients allergic to other members of the Lamiaceae family may experience cross-reactivity. This includes common culinary herbs such as Lavender, Melissa (Lemon Balm), Mentha (Mint), and Salvia (Sage). If you have had a reaction to any of these, notify your allergist before undergoing testing with Scutellaria Lateriflora.
> Important: Your healthcare provider will evaluate your complete medical history, including all allergies and chronic conditions, before prescribing Scutellaria Lateriflora.
Scutellaria Lateriflora is generally not recommended during pregnancy. In traditional medicine, certain Scutellaria species were used as emmenagogues (substances that stimulate menstrual flow), which suggests a risk of uterine contractions or miscarriage. There are no adequate, well-controlled studies in pregnant women to determine its safety. The FDA has not assigned a formal pregnancy category, but most clinical guidelines suggest avoiding use, especially in the first trimester. If exposure occurs, the patient should be monitored for signs of preterm labor.
It is unknown whether the flavonoids or adrenergic components of Scutellaria Lateriflora pass into human breast milk. Due to the potential for sedative effects in the nursing infant (e.g., poor feeding, excessive sleepiness), use is generally discouraged while breastfeeding. If a healthcare provider determines it is necessary, the infant should be closely monitored for changes in sleep patterns or weight gain.
Safety and effectiveness in pediatric populations have not been established. For allergenic extracts, use is limited to children where the benefit of desensitization clearly outweighs the risk of systemic reactions. In the supplement form, it is not recommended for children due to the lack of data on how it affects the developing nervous system and liver.
Patients over the age of 65 are at a higher risk for adverse effects. Age-related declines in renal and hepatic function can lead to higher systemic concentrations of the drug. Furthermore, the sedative effects increase the risk of falls and fractures in the elderly. Adrenergic effects may also exacerbate underlying cardiovascular conditions like heart failure or coronary artery disease. Healthcare providers should use 'low and slow' dosing strategies in this population.
While not primarily cleared by the kidneys, the accumulation of sulfonated metabolites in patients with a GFR < 30 mL/min may occur. No specific dose adjustment is mandated, but clinical monitoring for increased sedation is advised. Dialysis is unlikely to remove the drug effectively due to high protein binding.
In patients with mild hepatic impairment (Child-Pugh A), no adjustment is typically needed. However, for moderate to severe impairment (Child-Pugh B and C), Scutellaria Lateriflora should be avoided. If use is essential, liver enzymes must be monitored every 2-4 weeks during the initial phase of therapy.
> Important: Special populations require individualized medical assessment and frequent monitoring by a specialist.
Scutellaria Lateriflora acts through a dual-pathway system. Its immunological mechanism involves the presentation of plant antigens to T-lymphocytes, which induces the production of IgG4 'blocking antibodies' and reduces the production of allergen-specific IgE. This 'immune deviation' is the hallmark of allergenic extract therapy.
Its pharmacological mechanism is driven by flavonoids like baicalin. These molecules act as positive allosteric modulators at the benzodiazepine site of the GABA-A receptor, increasing the frequency of chloride channel opening. Additionally, its classification as an Adrenergic alpha and beta agonist indicates it binds to G-protein coupled receptors (GPCRs), specifically alpha-1, beta-1, and beta-2 receptors, stimulating the sympathetic nervous system.
| Parameter | Value |
|---|---|
| Bioavailability | ~15-20% (Oral baicalein) |
| Protein Binding | 80-90% |
| Half-life | 4-12 hours |
| Tmax | 0.5-2 hours |
| Metabolism | Hepatic (Glucuronidation via UGT1A1) |
| Excretion | Fecal (80%), Renal (20%) |
Scutellaria Lateriflora belongs to the Non-Standardized Allergenic Extract class. Within the botanical hierarchy, it is a member of the Lamiaceae family. It is pharmacologically grouped with other GABAergic botanicals like Valerian and Passionflower, though its unique adrenergic properties set it apart.
Common questions about Scutellaria Lateriflora
Scutellaria Lateriflora, or Blue Skullcap, is primarily used in clinical settings as a non-standardized allergenic extract for diagnosing and treating plant-related allergies through immunotherapy. Beyond its use in allergy clinics, it is widely utilized as a dietary supplement for managing mild anxiety, nervous tension, and sleep disturbances like insomnia. Some healthcare providers may also use it for its adrenergic properties to support the sympathetic nervous system. It is important to distinguish between the clinical-grade extract used by allergists and the over-the-counter herbal supplements. Always consult a healthcare professional before using it for any medical condition.
The most common side effects depend on how the drug is administered. When given as an injection for allergy testing, patients frequently experience redness, itching, and swelling at the site of the shot. For those taking oral supplements, the most frequent reports include significant drowsiness, lightheadedness, and mild stomach upset. Some users also report a 'calming' effect that may interfere with daytime activities if the dose is too high. Because it can affect the heart and blood vessels, some people may notice a slight increase in heart rate or changes in blood pressure. Most mild side effects resolve within a few hours of use.
No, you should strictly avoid drinking alcohol while using Scutellaria Lateriflora. Both alcohol and this herb act as central nervous system (CNS) depressants, meaning they slow down brain activity. When taken together, they can cause dangerously high levels of sedation, impaired coordination, and potentially respiratory depression. Furthermore, both substances are processed by the liver, and combining them can increase the risk of liver strain or injury. To ensure your safety and the effectiveness of the treatment, it is best to refrain from alcohol entirely during the course of therapy. Talk to your doctor if you have concerns about alcohol interactions.
Scutellaria Lateriflora is generally considered unsafe for use during pregnancy. Historical data suggests that it may act as an emmenagogue, which is a substance that can stimulate blood flow in the pelvic area and uterus, potentially leading to a miscarriage or preterm labor. There is also a lack of clinical research regarding how the herb's active compounds affect a developing fetus. Because of these risks, most healthcare providers recommend that pregnant women or those trying to conceive avoid all forms of Skullcap. If you discover you are pregnant while taking this medication, contact your obstetrician immediately for guidance. Always prioritize fetal safety by discussing all supplements with your medical team.
The time it takes for Scutellaria Lateriflora to work depends on the therapeutic goal. For its sedative and anti-anxiety effects, most patients notice a difference within 30 to 60 minutes after taking an oral dose. If used as an allergenic extract for immunotherapy, the process is much slower, often requiring several months of weekly injections before a significant reduction in allergy symptoms is achieved. The adrenergic effects on heart rate and blood pressure usually occur within an hour of administration. Because the onset can vary based on individual metabolism, it is important to follow the specific timeline provided by your healthcare provider. Do not increase the dose if you do not feel immediate results.
While Scutellaria Lateriflora is not considered an addictive substance like benzodiazepines, you should still avoid stopping it abruptly if you have been using it daily for a long period. Sudden discontinuation can sometimes lead to 'rebound' symptoms, where the anxiety or insomnia you were treating returns more intensely than before. For patients undergoing allergenic immunotherapy, stopping the injections suddenly will halt the desensitization process and may cause your allergies to return to their original severity. It is always safest to work with your doctor to gradually taper your dose over a week or two. This allows your nervous and immune systems to adjust slowly and safely.
If you miss a dose of an oral Scutellaria Lateriflora supplement, take it as soon as you remember, unless it is nearly time for your next scheduled dose. In that case, simply skip the missed dose and continue with your regular routine; never take two doses at once to make up for a missed one. If you miss an appointment for an allergenic extract injection, call your allergist's office immediately. Missing an immunotherapy dose can affect your 'build-up' schedule and may increase your risk of a reaction when you resume treatment. Your doctor will determine if your next dose needs to be adjusted. Consistency is key to the success of both sedative and immunological therapies.
There is currently no clinical evidence to suggest that Scutellaria Lateriflora causes weight gain. Unlike some pharmaceutical anti-anxiety medications or antidepressants, it does not appear to significantly alter appetite or metabolic rate in most patients. However, because it has a sedative effect, some individuals might become less physically active, which could indirectly lead to weight changes over time. If you notice unexpected weight gain while taking this herb, it is important to discuss it with your doctor to rule out other causes, such as thyroid issues or fluid retention. Maintaining a balanced diet and regular exercise remains important while on any medication. Your healthcare provider can help you monitor your weight during treatment.
Scutellaria Lateriflora has the potential for several significant drug interactions, so it must be used with caution. It should not be combined with other sedatives, sleep aids, or alcohol, as this can cause excessive drowsiness. Because it has adrenergic properties, it can also interact with blood pressure medications and MAO inhibitors, potentially causing dangerous spikes in blood pressure. There is also a risk when taking it with blood thinners or other herbs that affect the liver. Always provide your doctor with a complete list of all medications, including vitamins and herbal supplements, before starting Scutellaria Lateriflora. This allows them to check for safety and adjust your treatment plan as needed to avoid harmful interactions.
Scutellaria Lateriflora is a botanical ingredient, so it does not have a 'generic' version in the way that synthetic drugs like lisinopril do. Instead, it is available from many different manufacturers as a dietary supplement or as a non-standardized extract from various biological supply companies. In the world of allergenic extracts, different brands may have slightly different concentrations, so they are not always interchangeable. If your doctor prescribes a specific extract for immunotherapy, you should stick with that brand to ensure consistent dosing. For supplements, look for products that have been third-party tested (such as by USP or NSF) to ensure they are not contaminated with other plants. Always consult your pharmacist for the best available option.