Blue Vervain

BotanicalBest before bed

What is it

Blue vervain (Verbena hastata) is a North American perennial herb in the verbena family. Its aerial parts have been used traditionally as a nervine, mild sedative, and digestive bitter.

Evidence for 1 use

AI-assisted evidence assessment — talk to your doctor before relying on any single supplement.

Anxiety / mild sedation (traditional)

Mixed Evidence

Long traditional use as a nervine; no modern controlled human trials.

How it works

Blue vervain contains iridoid glycosides (verbenalin, hastatoside), flavonoids, and small amounts of volatile oils. These compounds are associated with mild relaxant, anti-inflammatory, and digestive effects in traditional use and some preclinical work. Mechanisms in humans are not well characterized. Verbenalin and related iridoids have shown anti-inflammatory and central nervous system effects in laboratory models. Human clinical evidence is essentially absent.

Dosage

Traditional doses: 2-4 g dried herb daily as tea, or 2-4 mL of 1:5 tincture three times daily.

When and how to take it

Traditionally taken in divided doses through the day for nervine support, or in the evening for mild sleep support. Take with or without food.

2 commercial forms

Compare the main delivery options and what they’re best suited for.

Liquid tincture

Common herbal preparation.

Alcohol-based; quickly absorbed.

Dried herb (tea)

Traditional preparation.

Water-soluble iridoids extract into tea.

Safety

Generally well tolerated at traditional doses. High doses may cause nausea and vomiting. Allergic reactions are possible in sensitive individuals.

Who should be cautious

Avoid in pregnancy (possible uterine-stimulating effects historically described). Avoid with severe depression or on sedative medications. Use cautiously with other herbs for sleep or anxiety.

Interactions

Theoretical interactions with sedatives, antidepressants, and antihypertensive medications. May affect hormone-sensitive conditions due to potential mild hormonal activity.

Frequently asked questions

Is blue vervain the same as lemon verbena?⌄

No. Blue vervain (Verbena hastata) and lemon verbena (Aloysia citrodora) are different plants in the same family. They have different uses and flavor profiles.

Will blue vervain help me sleep?⌄

It has traditional use as a mild relaxant, but there is no controlled clinical evidence. Better-studied options include valerian, passionflower, and magnesium for sleep concerns.

References

Blue Vervain on Wikidata — Wikidata link

Blue Vervain on NIH DSLD (US supplement label database) — NIH Dietary Supplement Label Database link

Research on Blue Vervain (PubMed search) — PubMed link

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Evidence-based·How we grade evidence

Disclaimer: These statements have not been evaluated by the FDA. This page is educational, not a substitute for personalized medical advice. Evidence grades are AI-assisted assessments — talk to your doctor before starting any new supplement, especially if you’re pregnant, breastfeeding, on medications, or managing a chronic condition.