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St. John's Wort Trivia Questions

How much do you really know about St. John's Wort? Below are 8 true or false statements. Click each one to reveal the answer and explanation.

1.

St. John’s Wort is completely safe to take with prescription antidepressants for a stronger effect.

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Easy
✗ FALSE

Combining them can cause serotonin syndrome, a dangerous condition with symptoms like agitation and rapid heart rate.

2.

St. John’s Wort can make birth control pills less effective by speeding up liver metabolism.

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Medium
✓ TRUE

It induces liver enzymes, reducing hormone levels in contraceptives, which can lead to unintended pregnancy.

3.

All species of Hypericum, the genus of St. John’s Wort, have medicinal properties.

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Medium
✗ FALSE

Only a few species, like Hypericum perforatum, are used medicinally; many others are toxic or ineffective.

4.

St. John's Wort gets its name from its traditional harvest date on St. John's Day, June 24, when it blooms.

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Medium
✓ TRUE

It was historically gathered around the feast of St. John the Baptist, and the red oil resembles his blood.

5.

St. John's Wort is native only to North America and was introduced to Europe by early settlers.

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Medium
✗ FALSE

St. John's Wort is native to Europe, Asia, and parts of Africa, and was brought to North America by colonists.

6.

St. John's Wort contains hyperforin, a compound that inhibits the reuptake of serotonin, norepinephrine, and dopamine.

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Hard
✓ TRUE

Hyperforin is believed to be the main active constituent responsible for the antidepressant effects of St. John's Wort, primarily through reuptake inhibition of these neurotransmitters.

7.

St. John’s Wort was used in ancient Greece by Hippocrates to treat snake bites.

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Hard
✗ FALSE

Hippocrates used it for various ailments, but snake bite treatment is a medieval myth; ancient Greeks mainly used it for wounds.

8.

St. John’s Wort can cause severe photosensitivity in livestock that eat too much of it.

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Hard
✓ TRUE

Hypericin in the plant makes skin ultra-sensitive to sunlight, leading to sunburn and blisters in animals.

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