Passionflower: the herbal tea that soothes sleep and anxiety

Passionflower (Passiflora incarnata) is one of the most scientifically recognised plants for its effects on anxiety and sleep. This climbing perennial, with its spectacular blooms, originates from South America and is today enjoyed worldwide as a herbal tea. Here is what the research says, how to brew it and our guidance on using it well.

Passionflower: portrait of a calming plant

Passionflower (Passiflora incarnata) is native to the south-eastern United States, Mexico and Central America. This climbing perennial is instantly recognisable by its intricate mauve and white flowers, almost otherworldly in their beauty. Spanish explorers who encountered it in the 16th century gave it its name, believing they could see the symbols of the Crucifixion within its complex bloom.

Used for centuries by Native Americans to ease insomnia and restlessness, passionflower is today recognised by the EMA (European Medicines Agency) for its gentle sedative properties.

The proven benefits of passionflower

Anxiety relief

Several quality clinical studies confirm passionflower's anxiolytic effect. An Iranian study (Akhondzadeh 2001) compared passionflower with oxazepam (a benzodiazepine) in 36 anxious patients: the results were comparable, but passionflower caused neither daytime drowsiness nor dependency. A more recent meta-analysis (Janda 2020) further supports its value in mild generalised anxiety.

Better sleep

Passionflower helps with falling asleep and improves overall sleep quality. An Australian study (Ngan 2011) conducted with 41 adults found that a cup of passionflower tea in the evening significantly improved subjective sleep quality over seven days, as measured by a standardised questionnaire.

How it works

Passionflower contains flavonoids (notably chrysin and vitexin) and alkaloids that bind to GABA receptors in the brain. GABA is the brain's primary inhibitory neurotransmitter, the compound that quiets nervous activity. The effect is gentle and lacks the potency or side effects associated with synthetic benzodiazepines.

Support during withdrawal

Passionflower is being studied as a support during withdrawal from tobacco and benzodiazepines (always under medical supervision). It may help ease the anxiety and sleep disturbances that typically accompany these processes.

Other traditional uses

• Nervous tension and irritability
• Palpitations of emotional origin
• Sleep difficulties in children (from age 6, with adapted doses)
• Hot flushes associated with menopause

How to brew a passionflower herbal tea

Basic recipe

• 1 tablespoon (2 to 3 g) of dried passionflower (aerial parts: leaves, flowers, stem)
• 250 ml of hot water
• Honey or sugar (optional)

Method

1. Pour the hot water over the passionflower in a cup.
2. Cover and steep for 10 minutes (this step matters for extracting the flavonoids).
3. Strain and drink while still warm.
4. Add honey if desired.

When to drink passionflower tea?

For sleep: 30 to 60 minutes before bedtime. For anxiety: 2 to 3 times throughout the day, avoiding times when full alertness is required.

Effective dosage

Clinical studies generally use between 400 mg and 800 mg of passionflower extract per day (the herbal tea equivalent being 2 to 6 g of dried plant). A course of 2 to 4 weeks is typical for assessing the effect, after which a break is advisable.

Start gently with one cup a day and build gradually according to how you feel. There is no risk of overdose, but drinking 4 to 5 strong cups daily is best avoided, as the sedative effect may become excessive.

Variations and blends

Passionflower and valerian

The classic combination for deep sleep. Use 50% of each, steep for 10 minutes. The sedative effect is noticeably stronger. Best reserved for persistent insomnia.

Passionflower and lemon balm

A gentle, pleasant calming blend. Lemon balm softens the sometimes slightly bitter taste of passionflower.

Passionflower and hops

Well suited to anxiety accompanied by mental rumination. Hops reinforce the quieting effect on an overactive mind.

Passionflower and chamomile

Mild and approachable, this blend is well suited to children from age 6 in very diluted doses.

Precautions and contraindications

• Pregnancy: contraindicated (theoretical uterotonic effect).
• Breastfeeding: not recommended as a precaution.
• Children: from age 6 only, in very diluted doses and with medical advice.
• Sedative or antidepressant treatment: possible potentiation; medical advice is essential.
• Before driving or operating machinery: avoid (possible sedative effect).
• General anaesthesia: discontinue at least 48 hours before the procedure.
• Low blood pressure: passionflower may accentuate hypotension.

Our T&T selection for sleep

Our herbal teas and infusions accompany your evenings with quiet gentleness. Explore our sleep blends and single-herb teas to create your own personalised infusions. For a broader view, visit our complete guide to herbal teas for better sleep.

Passionflower compared to other sleep-supporting plants

Frequently asked questions

Can passionflower replace an anxiolytic medication?

For mild to moderate anxiety, it can often be a helpful alternative. For severe anxiety or panic disorders, it is not sufficient: medical advice is essential. Never stop a prescribed medication without your doctor's agreement.

How long before noticing an effect?

For sleep: as early as the first cup (falling asleep more quickly). For anxiety: a regular course of 2 to 4 weeks is generally needed for a lasting effect.

Is passionflower habit-forming?

No, there is no documented addiction. There is no rebound effect when you stop. This is one of its key advantages over benzodiazepines.

Can passionflower be combined with other sleep plants?

Yes, combinations are common (passionflower with valerian, passionflower with lemon balm). The effect is often enhanced through synergy.

Is passionflower suitable for children?

From age 6, in very diluted doses (0.5 to 1 g per cup), one cup in the evening at most, and only after consulting a paediatrician. It can be an excellent natural alternative for anxious children who struggle to sleep.

What does passionflower taste like?

It is mildly herbal and vegetal, sometimes described as neutral or faintly bitter. A touch of honey or a slice of lemon brings it to life nicely.