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Passionflower

Passionflower suppliers and sourcing guide

Passionflower as an ingredient is the dried aerial parts of Passiflora incarnata, a vine native to the southern US and cultivated in Europe and India. It is sold as cut herb for tea, powder, and dry or liquid extracts standardized to flavonoids such as vitexin and isovitexin. It is a different plant and plant part from passion fruit (Passiflora edulis), which is sold as fruit juice and pulp.

See suppliersWhat to ask for on the COA
Also known as
Passiflora incarnata · maypop · passion flower herb
Facts checked
November 2026

Forms and grades of passionflower

Suppliers sell different products under the same name. Specify the one you need.

  • Cut herb

    Dried, cut aerial parts (stems, leaves, flowers) for tea.

  • Herb powder

    Milled dried aerial parts; not standardized.

  • Standardized extract

    Dry extract sold on total flavonoids (often expressed as vitexin) by UV or on named flavone C-glycosides by HPLC.

  • Liquid extract

    Tincture or glycerite sold on a herb-to-solvent ratio.

What to check on the COA

Compare each result with your own specification when the lot arrives.

Identity (HPTLC)
Confirms Passiflora incarnata and screens for other Passiflora species with different flavonoid patterns.
Flavonoids assay
Total flavonoids by UV or vitexin, isovitexin and related compounds by HPLC; the method should be on the COA.
Heavy metals
Lead, arsenic, cadmium and mercury by ICP-MS.
Microbiology
Total plate count, yeast and mold, E. coli and Salmonella.
Residual solvents and moisture
Ethanol for extracts against USP <467>; loss on drying for herb.

Storage, lots and expiry

Storage and shelf life

Keep herb and extract sealed, cool, dry and out of light. Extracts are hygroscopic and should be resealed promptly. Shelf life or retest date comes from the supplier.

Lots and expiry dates

Flavonoid content changes with harvest time and the leaf-to-stem ratio. Record supplier lot and assay method, and check species on each lot.

Regulatory status

Facts from regulators and standards bodies, each linked to its source.

This is general information, not regulatory advice. Status differs by country and by how the ingredient is used, so check the rules for your product and market.

Passionflower suppliers

Manufacturers and distributors whose own websites say they sell it.

We are checking passionflower suppliers now

Every listing is checked against the supplier’s own website before it goes live, so this list fills in over the coming weeks. The specs and COA checklist above are ready today.

Sell passionflower? Request a listing

Frequently asked questions

What forms of passionflower can brands buy?

Common forms include cut herb, herb powder, standardized extract and liquid extract. Ask each supplier for the specification sheet of the exact grade they quote.

What should the COA for passionflower include?

Expect identity (HPTLC), flavonoids assay, heavy metals, microbiology and residual solvents and moisture, each with its method, specification and result for that lot.

How should passionflower be stored?

Keep herb and extract sealed, cool, dry and out of light. Extracts are hygroscopic and should be resealed promptly. Shelf life or retest date comes from the supplier.

What is the regulatory status of passionflower?

21 CFR 172.510 lists passion flower (Passiflora incarnata L.) among natural flavoring substances that may be used in food under that section's conditions. Health Canada's natural health product monograph for passionflower lists the dried herb top of Passiflora incarnata as the source material.

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