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Updated: 1 20, 2025

Hypericum perforatum

What is Hypericum perforatum?

Hypericum perforatum is a perennial herbaceous plant that belongs to the family Clusiaceae.

It has oval-shaped leaves, 1-3 cm long, with a perforated membrane on the underside, and produces yellow flowers, 2-3 cm in diameter, with five petals, in summer. The flowers are followed by capsules containing numerous seeds. Hypericum perforatum grows up to 1 meter tall, with a woody stem that is branched in the upper part, and has a strong, pungent smell.

The plant contains hypericin and hyperforin, bioactive compounds with antimicrobial and anti-inflammatory properties.

What ailments can you heal with this herb?

The most common ailments you can heal with Hypericum perforatum are depression, where studies show a significant reduction in symptoms after treatment.

Anxiety and insomnia are also alleviated by the plant's ability to regulate neurotransmitters and promote relaxation. Hypericum perforatum has anti-inflammatory properties, which help in reducing inflammation and associated pain. Additionally, the plant accelerates wound healing and reduces the risk of infection in wounds, making it effective in treating skin conditions, migraines, and fever.

Furthermore, its analgesic and antiseptic properties make it beneficial in treating pain, digestive issues, gastrointestinal issues, infections, and skin issues, while also providing pain relief, managing rheumatism, and potentially alleviating symptoms of diabetes, and showing promise in treating psoriasis and eczema.

What are the therapeutic properties this herb?

The main therapeutic properties of Hypericum perforatum are attributed to its antioxidant activity, which protects cells from oxidative damage, thereby supporting the prevention of chronic diseases.

The plant's antimicrobial properties are also notable, with flavonoids such as quercetin and kaempferol exhibiting antibacterial and antifungal effects, preventing infections and promoting wound healing. Additionally, the anti-inflammatory properties of Hypericum perforatum have been linked to the presence of naphthodianthrones, which have been shown to reduce inflammation and alleviate symptoms associated with arthritis and other inflammatory conditions. Furthermore, the antiviral properties of the plant have been attributed to its ability to inhibit the replication of viruses, including herpes simplex and influenza, thereby preventing the spread of infections.

The neuroprotective effects of Hypericum perforatum, which have been linked to the presence of hyperforin and adhyperforin, a pair of phloroglucinol derivatives, support the prevention of neurodegenerative diseases such as Alzheimer's and Parkinson's.

What are the medicinal constituents this herb?

The most important healing constituents of Hypericum perforatum are flavonoids such as quercetin, kaempferol, and rutin, which have antioxidant and anti-inflammatory properties.

Naphthodianthrones like hyperforin and pseudohypericin are responsible for its antidepressant effects, as they inhibit the reuptake of serotonin and norepinephrine in the brain. Emodin, a naphthoquinone, has anti-inflammatory and antimicrobial properties, while hyperoside, a flavonoid glycoside, has antioxidant and anti-inflammatory effects. Aucubin, a phenylethanoid glycoside, has anti-inflammatory and antimicrobial properties, contributing to the plant's wound-healing and antimicrobial activities.

These constituents work synergistically to explain Hypericum perforatum's efficacy in treating mild to moderate depression, anxiety, and other conditions.

What are the main herbal preparations this herb?

The main herbal preparations of Hypericum perforatum include a standardized tincture containing 0.3-1% hyperforin, an infusion made by steeping the flowers in hot water, a topical salve applied to the skin for pain relief, dried flowers steeped in hot water to make a tea, and capsules containing 300-500 mg of dried extract.

The tincture is often used for treating mild to moderate depression due to its high hyperforin content. Infusions and teas are used for their antiviral and antibacterial properties. The salve is applied topically to treat wounds, burns, and minor skin irritations due to its anti-inflammatory and antiseptic properties.

Capsules are used for their standardized extract content, providing a consistent dose of hyperforin and hypericin.

What are the possible side effects of using this herb improperly?

The possible side effects of using Hypericum perforatum improperly include developing seizures, particularly in individuals with a history of seizure disorders, due to its potential to interact with anticonvulsant medications and decrease the seizure threshold.

Excessive consumption of Hypericum perforatum can also lead to nausea, dizziness, and gastrointestinal disturbances, likely caused by its stimulatory effects on the central nervous system. Furthermore, high doses of the herb may cause liver damage, as it contains compounds that can induce liver enzyme activity and potentially lead to hepatotoxicity, particularly in individuals with pre-existing liver conditions. Additionally, Hypericum perforatum may induce photosensitivity, a condition characterized by increased susceptibility to sunburn and skin damage, due to its ability to stimulate the production of porphyrins, which can be exacerbated by sunlight exposure.

These adverse effects can be attributed to the herb's bioactive compounds, including hyperforin and hypericin, which can have a synergistic effect when consumed in excess.