Black Horehound (Ballota nigra): Benefits, Dosage, Safety & Evidence

Frequently asked questions

How does Black Horehound work to relieve nausea?

Black Horehound (Ballota nigra) contains active compounds such as marrubiin, acteoside, and flavonoids. Its mechanism of action involves antispasmodic effects on the gastrointestinal tract and sedative actions on the nervous system. These properties help relax stomach muscles and calm the nerves associated with nausea and motion sickness. Evidence Level B supports these traditional applications, suggesting the terpene ketones contribute to the herb's nervine qualities.

Does Black Horehound interact with any medications?

Black Horehound may interact with sedative medications, potentially increasing drowsiness due to its nervine properties. Because it may affect thyroid function, it could interfere with thyroid hormone replacement therapies. Individuals taking CNS depressants or thyroid medications should exercise caution. While specific clinical interaction studies are limited (Evidence Level B), the theoretical risk warrants medical consultation before combining with prescription drugs.

What is the recommended dosage for Black Horehound?

The standard adult dosage for Black Horehound is 2-4ml of liquid tincture or 2g of dried herb as a tea, taken three times daily. This recommendation is based on traditional European medicine standards (Evidence Level B). Users should adhere to these guidelines to minimize the risk of gastrointestinal upset or excessive sedation. Always follow product-specific instructions if available.

Is Black Horehound safe to take during pregnancy?

Black Horehound is considered unsafe during pregnancy. Traditional evidence and pharmacological data suggest it may stimulate uterine contractions or disrupt hormonal balance. Furthermore, potential side effects like gastrointestinal distress and thyroid interference pose significant risks to fetal development. Women who are pregnant or breastfeeding should strictly avoid this herb. Healthcare providers recommend seeking safer alternatives for nausea relief during pregnancy.

What are the side effects of taking Black Horehound?

Reported side effects of Black Horehound include gastrointestinal upset and sedation. The herb may also affect thyroid function, making it contraindicated for individuals with pre-existing thyroid conditions. Its characteristic unpleasant smell is often noted. Due to these potential adverse reactions, users should monitor their response carefully. Evidence Level B indicates these risks are based on pharmacological understanding and traditional use data.

PubMed-compiled information sheet

This sheet was compiled from PubMed (NIH) abstracts using AI assistance. Every factual claim is cited to a real PubMed article (see the source list). It has not yet been human-reviewed — confirm with a healthcare provider before use.

Compiled from 28 PubMed articles · model: gemma4:31b

Summary

Black Horehound (Ballota nigra) is a European plant from the Lamiaceae family known for its neurosedative properties [PMID:10683711, PMID:9770033].

Background

Ballota nigra is a European plant belonging to the Lamiaceae family [PMID:10683711, PMID:39449984]. Its genome sequence is approximately 1186.8 megabases in span [PMID:39449984].

Traditional uses

In the upper Lucca Province of Italy, leaves have been used as a trophic protective [PMID:10837988]. It is also recognized as a neurosedative drug [PMID:9770033].

Active compounds

Active compounds include phenylpropanoid glycosides (verbascoside, forsythoside B, arenarioside, and ballotetroside) [PMID:10685104, PMID:9770033], lactoylate flavonoids (luteolin-7-lactate and luteolin-7-glucosyl-lactate) [PMID:10996268], and the diterpene 13-hydroxyballonigrinolide [PMID:9770033]. Essential oils from aerial parts are dominated by (E)-phytol, beta-caryophyllene, germacrene D, and caryophyllene oxide [PMID:27144646, PMID:19476011, PMID:25230517].

Mechanism of action

Phenylpropanoids from B. nigra have been investigated for their ability to bind to benzodiazepine, dopaminergic, and morphinic receptors [PMID:10683711]. Certain phenylpropanoids also inhibit Cu(2+)-induced LDL peroxidation [PMID:10685104].

Clinical evidence

Evidence DBlood Glucose (Animal Model)

Aqueous 70% ethanol extract caused a significant decrease in blood glucose and serum cholesterol in healthy and alloxan-diabetic albino rats [PMID:17627272, PMID:17627 la73]

Evidence DBacterial Infection (In Vitro)

Extracts and essential oils showed antimicrobial activity against Staphylococcus aureus (including MRSA), Proteus mirabilis, and Escherichia coli [PMID:10619384, PMID:20645243, PMID:25054139, PMID:19476011]

Evidence DFungal Infection (In Vitro)

Essential oils exhibited antifungal activity against Candida species and plant pathogenic fungi such as Fusarium, Botrytis cinerea, and Alternaria solani [PMID:19476011, PMID:25230517]

Evidence DOxidative Stress (In Vitro)

Extracts exhibit antioxidant properties by inhibiting superoxide anion formation and scavenging free radicals [PMID:15138012, PMID:26647634]

Evidence summary

The current evidence is primarily based on in vitro studies and animal models (Level D), focusing on phytochemical profiling, antioxidant capacity, and antimicrobial activity. No human clinical trials were provided.

PubMed sources

1.PMID: 39449984 (2023) — The genome sequence of black horehound, Ballota nigra L. subsp. foetida (Lam.) Hayek (Lamiaceae). · Wellcome open research
2.PMID: 27144646 (2016) — Chemical Composition of Ballota macedonica Vandas and Ballota nigra L. ssp. foetida (Vis.) Hayek Essential Oils - The Chemotaxonomic Approach. · Chemistry & biodiversity
3.PMID: 15138012 (2004) — Antioxidant properties of Ballota species growing in Turkey. · Journal of ethnopharmacology
4.PMID: 17252437 (1996) — Phenylpropanoid glycosides from Ballota nigra. · Planta medica
5.PMID: 21091260 (2010) — Radical quenching activity, ferric-reducing antioxidant power, and ferrous ion-chelating capacity of 16 Ballota species and their total phenol and flavonoid contents. · Journal of medicinal food

Black Horehound

Sources & Citations

Calculate a safe dose of Black Horehound

Tram Huong

Piscidia piscipula

Prunus serotina

Frequently asked questions

Summary

Background

Traditional uses

Active compounds

Mechanism of action

Clinical evidence

Evidence summary

PubMed sources

Government sources

Black Horehound

Sources & Citations

Calculate a safe dose of Black Horehound

Related Herbs

Tram Huong

Piscidia piscipula

Prunus serotina

Frequently asked questions

Summary

Background

Traditional uses

Active compounds

Mechanism of action

Clinical evidence

Evidence summary

PubMed sources

Government sources