St. John's Wort (Klamath Weed) |
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Basic Information
Biological name (genus and species):
Hypericum perforatum
Parts used for medicinal purposes:
Petals/flower
Chemicals this herb contains:
Hypericin
Resin (See Glossary)
Tannins (See Glossary)
Volatile oils (See Glossary)
KNOWN EFFECTS
Causes photosensitization.
Interferes with absorption of iron and other minerals when
taken internally.
Slightly depresses central nervous system.
Miscellaneous information:
Appears on the FDA list of unsafe herbs.
UNPROVED SPECULATED BENEFITS
Acts as an anti-depressant.
Repels or destroys "demons."
Relieves anxiety.
WARNINGS AND PRECAUTIONS
Don't take if you:
Are pregnant, think you may be pregnant or plan pregnancy in
the near future.
Consult your doctor if you:
Take this herb for any medical problem that doesn't improve in
2 weeks. There may be safer, more-effective treatments.
Take any medicinal drugs or herbs including aspirin, laxatives,
cold and cough remedies, antacids, vitamins, minerals, amino
acids, supplements, other prescription or non-prescription
drugs.
Pregnancy:
Problems in pregnant women taking small or usual amounts have
not been proved. But the chance of problems does exist. Don't
use unless prescribed by your doctor.
Breast-feeding:
Problems in breast-fed infants of lactating mothers taking
small or usual amounts have not been proved. But the chance of
problems does exist. Don't use unless prescribed by your doctor.
Infants and children:
Treating infants and children under 2 with any herbal
preparation is hazardous.
Others:
None expected if you are beyond childhood and under 45,
basically healthy and take for only a short time.
Storage:
Keep cool and dry, but don't freeze. Store safely away from
children.
Safe dosage:
At present no "safe" dosage has been established.
TOXICITY
Rated slightly dangerous, particularly in children, persons over
55 and those who take larger than appropriate quantities for
extended periods of time.
For symptoms of toxicity: See ADVERSE REACTIONS, SIDE
EFFECTS OR OVERDOSE SYMPTOMS section below.
ADVERSE REACTIONS, SIDE EFFECTS OR OVERDOSE SYMPTOMS
| Signs and symptoms: |
What to do: |
| Abnormal skin coloring |
Discontinue. Call doctor |
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when convenient. |
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