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Substances, plants and mushrooms

The list contains the most frequently asked about and most common causes of poisoning in humans. You can search for items by typing in a search word. If you do not find the item you are looking for, you may call the Poison Information Center to check if it is poisonous.

Unfortunately, the Poison Information Center is not able to identify plants and mushrooms over the phone. Identification should always take place on the spot.

In addition to books on mushroom identification, mushroom experts can help you identify mushrooms. Experts can be found via mycological societies and the Martha Organization, for example.

To Poison Information Center's main page

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Type

Explanation of symbols marked after the plant:

[F] = Phytophotodermatitis; sap or juice from the plant may cause skin symptoms, such as blisters, after exposure to sunlight.

[K] = The plant is non-toxic in moderate amounts or when properly prepared.

Plant causes topical irritation = Sap or juice from the plant may cause irritation (such as stinging) on the skin and in the mouth. Does not absorb into the body.

H

Hair styling products

Substances

A single dose is considered harmless. Does not require treatment.​

Heartburn drugs

Substances

Keywords: Rennie ®, Antepsin ®, Balancid Novum ®, Gaviscon ®, Galieve Peppermint ®, antacids

A single dose of mentioned drugs is considered harmless. Does not require treatment.​

In case of other heartburn drug, contact the Poison Information Centre to confirm toxicity.

Helium

Substances

Keywords: balloon, foil balloon

Inhaled in small amounts, helium gas is not considered dangerous. In addition to a high-pitched voice, inhaling helium gas may cause symptoms such as headache and dizziness. These are caused by hypoxia resulting from the helium gas displacing oxygen.

Herbicide

Substances

Keywords: glyphosate

The content varies. Contact the Poison Information Centre to confirm toxicity.

Hydrocortisone

Substances

Keywords: Corticosteroids, Hydrocortison®

A single dose of cortisone tablets or cream is considered harmless. In large amounts, creams may cause gastrointestinal symptoms. Does not require treatment.​

Hydrogen peroxide

Substances

Toxicity of hydrogen peroxide depends on the amount and the concentration. Contact the Poison Information Centre to confirm toxicity.

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