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"Poisonous" does not mean deadly. Some manifestations of toxicity are subtle. The dose, as always, determines if a plant is safe source of nutrients or a toxic hazard.

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BRIEF: Is St Johns Wart poisonous to humans?

I have another question about St. Johns Wort. Is it poisonous to humans? I've been drinking the tea for about 2 weeks now.


The dose is key. If you were grazing on the stuff and went out to do some sun-bathing, then you would have a problem, but the little bit of hypericin you get in a few sips of tea are unlikely to hurt you.