Passion flower - also known as passion flower herb, maypops, and by its Latin name passiflora incarnata - is a herbal product traditionally used for temporary relief of symptoms associated with mild anxiety and sleep disturbance. Used with other ingredients, it is used for mild digestive complaints, such as bloating and flatulence.
It is one of the eight most popular herbal ingredients in the UK.
Some products containing passion flower are registered with the Medicines and Healthcare products Regulatory Agency (MHRA) under the Traditional Herbal Registration (THR) scheme.
This does not mean the regulator has tested products which contain it to prove it works, or that claims about it have been verified by clinical studies. However, it does mean that passion flower has been confirmed as being used as a traditional medicine for at least 30 years, including 15 years within the EU.
Registration under the THR scheme also confirms that the manufacturer of the product is meeting specific standards of safety and quality. These products must also be accompanied by clear dosage instructions and other patient information to allow its safe use.
Passion flower containing products for sleep are not recommended for under 18s. It is not recommended during pregnancy or breastfeeding.
It may also affect the ability to drive or operate machinery safely .