St John’s Wort (Hypericum perforatum)

Contents

This package contains 20 g of dried, shredded St John’s Wort (Hypericum perforatum).

Traditional Characteristics

St John’s Wort is a well-known European herb with a long history in traditional herbal practice. It has traditionally been associated with soothing and mood-supporting properties and has been used in herbal preparations intended to promote relaxation and emotional wellbeing.

The European Medicines Agency recognises Hypericum perforatum as a plant with a long-established history of herbal use, while also highlighting important safety considerations, particularly regarding interactions with medicines.

How to Prepare

For a traditional herbal infusion:

• Use approximately 1–2 teaspoons of the dried herb per cup.
• Pour over hot water.
• Allow the tea to steep for around 15 minutes.
• Strain before drinking.

The original product guidance recommends no more than three cups per day. However, St John’s Wort can interact with numerous medicines, so anyone taking medication should seek professional advice before using it.

Important Medication Interactions

St John’s Wort is particularly notable for its ability to affect drug-metabolising enzymes and transport systems. This can reduce the concentration and effectiveness of certain medicines. Interactions have been documented with medicines including cyclosporine, digoxin, warfarin and theophylline, as well as some hormonal contraceptives and other prescription medicines.

It may also interact with medicines and substances that influence serotonin. Combining St John’s Wort preparations with certain antidepressants, including SSRIs, can increase serotonergic effects and may, in rare cases, contribute to serotonin syndrome.

For this reason:

• Consult a doctor or pharmacist before using St John’s Wort if you take prescription or regular medication.
• Do not start or stop St John’s Wort alongside medication without professional advice.
• Particular caution is required with antidepressants, anticoagulants, immunosuppressants, anticonvulsants, heart medicines, certain HIV medicines and hormonal contraceptives.
• Discuss its use with a healthcare professional before surgery because interactions with medicines used during anaesthesia may occur.

Traditional History

The name St John’s Wort is traditionally linked to the plant’s flowering period around St John’s Day on 24 June. Historically, flowering stems were hung in homes and placed near religious images as a protective symbol. In European folklore, the herb was associated with protection against evil and harmful influences.

The botanical name Hypericum perforatum refers to the small translucent glands visible in the leaves when they are held against the light. These characteristic markings are one of the easiest ways to distinguish the species.

Botanical Background

Hypericum perforatum is a flowering member of the Hypericaceae family. It is native to large parts of Europe and Asia and has subsequently become established in many other regions around the world.

The plant produces bright yellow flowers and is commonly found in grasslands, roadsides, meadows and other sunny habitats. Its adaptability has allowed it to spread widely beyond its original geographical range.

St John’s Wort has been documented in European herbal traditions for centuries. Historically, it was used in a variety of preparations, including herbal teas and topical preparations. Modern research has focused particularly on its phytochemical constituents and potential interactions with conventional medicines.

Product Information

• Botanical name: Hypericum perforatum
• Common name: St John’s Wort
• Plant material: Dried herb
• Form: Shredded
• Net quantity: 20 g

Storage

Keep in a cool, dry and dark place, away from direct sunlight and moisture. Reseal the packaging after use to preserve the herb’s quality.

Keep out of reach of children.

Safety Information

St John’s Wort should not be treated as an ordinary herbal tea when medicines are involved. The EMA notes significant interaction and safety concerns associated with Hypericum perforatum, and patients taking prescription medicines should consult a doctor or pharmacist before use.

This product is a dried botanical herb and not a substitute for medical treatment. Pregnant or breastfeeding individuals, people with existing medical conditions and anyone taking medication should seek advice from a qualified healthcare professional before use.