Complementary & Alternative Medicine for Mental Health

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 There are insufficient data available at this time to recommend use of St. John’s wort by
children or during pregnancy or breast-feeding.
 The list of all of the many observed side effects of St. John’s wort includes:
 sensitivity to sunlight (danger of severe sunburn), rare, under 1% risk, and generally
in light-skinned people or with use of antibiotics or birth control pills. Nonetheless,
persons using St. John’s wort should use sunscreen and other protection outdoors.
 gastrointestinal symptoms including nausea, loose stools, constipation and
heartburn/gastric upset. Persons using St. John’s wort should take it with food.
 anxiety
 dry mouth
 dizziness
 fatigue/sedation
 headache
 sexual dysfunction/disinterest (including impotence)
 confusion
 insomnia
 bruxism (teeth clenching)
 vivid dreams
 restless legs
 tingling
 suicidal and homicidal thoughts. Mischoulon and Rosenbaum report 17 cases of
psychosis, but lesser disturbance is difficult to quantify. If these thoughts persist,
get help.


  1. DOSAGE: The typical dose for mild to moderate depression is 900 mg per day standardized
    to contain 0.3% hypericin or hyperforin and split in three dosages. Brown et al. note that
    treating severe depression may require doses of up to 1,800 mg. per day for 6-12 weeks.
    At these higher doses, Saint John’s wort causes more side effects, similar to Zoloft and
    increases the risk of interactions with medications. This is twice the dosage used in most

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