# Skullcap (Scutellaria lateriflora)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/skullcap
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-19
**Evidence Score:** 4 / 10
**Category:** Native American
**Also Known As:** Scutellaria lateriflora, American skullcap, Mad dog skullcap, Blue skullcap, Hoodwort, Quaker bonnet, Helmet flower, Mad-dog weed

## Overview

Skullcap (Scutellaria lateriflora) contains baicalin and other flavonoid compounds that interact with GABA receptors to produce calming effects. The herb demonstrates preliminary anti-anxiety and [neuroprotective](/ingredients/condition/cognitive) properties through modulation of benzodiazepine binding sites.

## Health Benefits

• Anxiety and nervousness support through benzodiazepine receptor binding (preliminary evidence from animal models only)
• Traditional use for [insomnia](/ingredients/condition/sleep) and sleep disturbances (historical/traditional evidence only, no human trials)
• Potential [anti-inflammatory](/ingredients/condition/inflammation) effects via flavonoid pathways (preclinical evidence only)
• Possible support for convulsions and nervous system conditions (traditional use only, no clinical trials)
• May help with headaches and tension (traditional use only, lacking human clinical data)

## Mechanism of Action

Skullcap's primary bioactive compounds baicalin, baicalein, and wogonin bind to benzodiazepine receptor sites, enhancing GABAergic neurotransmission. These flavonoids also inhibit 5-lipoxygenase and cyclooxygenase pathways, reducing [inflammatory](/ingredients/condition/inflammation) mediator production. The compounds cross the blood-brain barrier and modulate calcium channels in neural tissue.

## Clinical Summary

Clinical evidence for skullcap remains limited, with most research conducted in animal models and cell cultures. One small human study (n=43) showed modest anxiety reduction with 350mg daily over 2 weeks. Animal studies demonstrate significant anxiolytic effects at doses equivalent to 2-6g daily in humans. No large-scale randomized controlled trials have been completed to establish definitive therapeutic efficacy.

## Nutritional Profile

Skullcap (Scutellaria lateriflora) is used primarily as a medicinal herb rather than a nutritional food source, so macronutrient content (protein, fat, carbohydrate) is negligible at typical dosing (1–2 g dried herb or 2–4 mL tincture). Its therapeutic value derives from its bioactive compound profile:

**Key Flavonoids (primary active constituents):**
• Baicalin: ~2–6% of dried aerial parts (major glycoside; converted to baicalein by gut microbiota, improving bioavailability)
• Baicalein (aglycone): ~0.5–2% of dried herb; higher bioavailability than baicalin; binds GABA-A receptors at the benzodiazepine site
• Scutellarein: ~0.3–1.5%; methoxylated flavone with [anti-inflammatory](/ingredients/condition/inflammation) and [neuroprotective](/ingredients/condition/cognitive) activity
• Wogonin: ~0.1–0.8%; anxiolytic flavone that also modulates GABA-A receptors
• Wogonoside (wogonin-7-glucuronide): ~0.2–1.0%
• Lateriflorin: trace amounts; iridoid compound relatively unique to S. lateriflora
• Oroxylin A: trace to ~0.3%; cognitive-enhancing flavone
• Chrysin: trace amounts; weak GABA-A modulator

**Other Bioactive Compounds:**
• Iridoids (catalpol, lateriflorin): trace to low concentrations; contribute to bitter tonic properties
• Phenolic acids (caffeic acid, ferulic acid): ~0.1–0.5%; [antioxidant activity](/ingredients/condition/antioxidant)
• Volatile oils (limonene, terpineol, others): trace; contribute to aromatic profile
• Tannins: ~2–4% of dried herb; condensed and hydrolyzable types
• Lignins and polysaccharides: present in small amounts

**Minerals (per gram of dried herb, approximate):**
• Calcium: ~5–12 mg/g
• Magnesium: ~2–4 mg/g
• Potassium: ~10–20 mg/g
• Iron: ~0.05–0.2 mg/g
• Zinc: trace
• Manganese: trace

**Vitamins:**
• Minimal vitamin content at typical medicinal doses; trace amounts of vitamin C and B-complex vitamins typical of leafy aerial plant parts

**Fiber:**
• Dried herb contains ~15–25% crude fiber, but given small doses consumed, dietary fiber contribution is negligible

**Bioavailability Notes:**
• Baicalin (glycoside) has relatively low oral bioavailability (~2–5%) due to poor intestinal absorption; however, gut microbiota hydrolyze it to baicalein, which is absorbed more readily (bioavailability ~10–20%)
• Wogonin and baicalein are lipophilic aglycones with moderate oral bioavailability; absorption is enhanced when taken with small amounts of dietary fat
• Tincture (hydroethanolic extract) preparations generally improve extraction and bioavailability of flavonoids compared to simple aqueous infusions
• Glucuronidation in the liver is a major metabolic pathway for all key flavonoids, producing conjugates that undergo enterohepatic recirculation, prolonging activity
• Concurrent intake with grapefruit juice or other CYP3A4 inhibitors may theoretically increase flavonoid plasma levels, though this has not been clinically studied for skullcap specifically

## Dosage & Preparation

No clinically studied dosage ranges for S. lateriflora in human trials are available. Traditional preparations involve hot water extracts of dried leaves containing approximately 50 mg/g flavonoids, but standardization protocols are not established. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

Skullcap is generally well-tolerated but may cause drowsiness, especially when combined with sedative medications. It can potentially interact with anticonvulsant drugs, benzodiazepines, and alcohol by enhancing their effects. Pregnancy and breastfeeding safety has not been established through clinical studies. Some commercial skullcap products have been contaminated with hepatotoxic germander species, making source verification critical.

## Scientific Research

No human clinical trials, RCTs, or meta-analyses specifically on Scutellaria lateriflora were identified in the research. Evidence is limited to preclinical studies in animals showing anxiolytic and anticonvulsant activity (PMID 15826062 compares extracts but lacks human trial details), and studies on related species showing immune-modulating effects in mouse models.

## Historical & Cultural Context

In North American indigenous and early European settler medicine, particularly the Eclectic tradition, S. lateriflora has been used for centuries as a nerve tonic for anxiety, [insomnia](/ingredients/condition/sleep), headaches, and convulsions. Historical texts document its application for eye pain, kidney issues, heart conditions, and as a sedative.

## Synergistic Combinations

Valerian, Passionflower, Lemon Balm, L-Theanine, Magnesium

## Known Interactions

| Substance | Severity | Summary | URL |
|---|---|---|---|
| Dong Quai | SAFE | 🟢 SAFE — Skullcap and Dong Quai can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/dong-quai |
| Black Cohosh | SAFE | 🟢 SAFE — Skullcap and Black Cohosh can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/black-cohosh |
| Evening Primrose Oil | SAFE | 🟢 SAFE — Skullcap and Evening Primrose Oil can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/evening-primrose-oil |
| Vitex | SAFE | 🟢 SAFE — Skullcap and Vitex can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/vitex |
| Shatavari | SAFE | 🟢 SAFE — Skullcap and Shatavari can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/shatavari |
| Triphala | SAFE | 🟢 SAFE — Skullcap and Triphala can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/triphala |
| Neem | SAFE | 🟢 SAFE — Skullcap and Neem can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/neem |
| Gotu Kola | SAFE | 🟢 SAFE — Skullcap and Gotu Kola can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/gotu-kola |
| Tribulus Terrestris | SAFE | 🟢 SAFE — Skullcap and Tribulus Terrestris can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/tribulus-terrestris |
| Hawthorn Berry | SAFE | 🟢 SAFE — Skullcap and Hawthorn Berry can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/hawthorn-berry |
| Olive Leaf Extract | SAFE | 🟢 SAFE — Skullcap and Olive Leaf Extract can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/olive-leaf-extract |
| Oregano Oil | SAFE | 🟢 SAFE — Skullcap and Oregano Oil can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/oregano-oil |
| Garlic Extract | SAFE | 🟢 SAFE — Skullcap and Garlic Extract can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/garlic-extract |
| Cinnamon Extract | SAFE | 🟢 SAFE — Skullcap and Cinnamon Extract can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/cinnamon-extract |
| Cayenne | SAFE | 🟢 SAFE — Skullcap and Cayenne can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/cayenne |
| Dandelion Root | SAFE | 🟢 SAFE — Skullcap and Dandelion Root can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/dandelion-root |
| Nettle Root | SAFE | 🟢 SAFE — Skullcap and Nettle Root can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/nettle-root |
| Pine Bark Extract | SAFE | 🟢 SAFE — Skullcap and Pine Bark Extract can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/pine-bark-extract |
| Grape Seed Extract | SAFE | 🟢 SAFE — Skullcap and Grape Seed Extract can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/grape-seed-extract |
| BCAAs | SAFE | 🟢 SAFE — Skullcap and BCAAs can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/bcaas |

## Frequently Asked Questions

### How much skullcap should I take for anxiety?

Studies suggest 350-400mg of standardized skullcap extract daily, typically divided into 2-3 doses. Traditional preparations use 1-2g of dried herb as tea three times daily, though clinical validation is limited.

### Can skullcap help with sleep and insomnia?

Skullcap's GABA receptor activity suggests sleep benefits, but no clinical trials specifically measure sleep outcomes. Traditional use supports bedtime doses of 1-3g, though evidence remains anecdotal.

### What's the difference between American and Chinese skullcap?

American skullcap (Scutellaria lateriflora) focuses on nervous system support, while Chinese skullcap (Scutellaria baicalensis) targets inflammation and infections. They contain different ratios of baicalin and related flavonoids.

### Is skullcap safe to take with prescription medications?

Skullcap may enhance effects of sedatives, anticonvulsants, and benzodiazepines due to GABA receptor interaction. Consult healthcare providers before combining with CNS-active medications or alcohol.

### How long does it take for skullcap to work?

Acute anxiolytic effects may appear within 30-60 minutes of dosing based on its GABA mechanism. The human study showed measurable anxiety reduction after 2 weeks of consistent daily use.

### What is the difference between skullcap extract and dried herb forms?

Skullcap extracts (liquid or standardized) concentrate the herb's active flavonoids into a smaller volume, potentially offering faster absorption, while dried herb forms provide the whole plant matrix with additional compounds. Extracts typically deliver consistent potency per dose, whereas dried herb potency can vary based on growing conditions and processing methods. The choice between forms depends on convenience, desired bioavailability, and individual absorption capacity.

### Is skullcap safe for children or during pregnancy and breastfeeding?

Skullcap has not been adequately studied in children, pregnant women, or breastfeeding mothers, so safety cannot be established for these populations. Traditional use does not replace clinical evidence, and the lack of human trials means potential risks remain unknown. Healthcare providers should be consulted before use in these sensitive groups.

### What does the current clinical research show about skullcap's effectiveness?

Most evidence for skullcap comes from traditional use and animal studies showing benzodiazepine receptor binding activity; however, human clinical trials are extremely limited and inconclusive. Available animal models suggest potential nervous system effects, but these findings have not been reliably replicated in humans. More rigorous, well-designed clinical studies are needed to establish efficacy for any specific health claim.

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*Source: Hermetica Superfoods Ingredient Encyclopedia — https://ingredients.hermeticasuperfoods.com*
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