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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 0800 147 111 to check if it is poisonous.

Plant and mushroom species and genera are listed depending on whether all species of a genus are poisonous or only some. 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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Candles

Substances

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

Cannabis sativa (Cannabis sativa)

Plants

The plant is toxic, but ingesting a small amount rarely causes symptoms.

Car lock de-icer

Substances

Depending on the ingredients, see isopropanol or glycols.​

Carbon monoxide

Substances

Keywords: CO, carbon monoxide

First aid includes breathing fresh air and resting in a semi-sitting position.

If the patient develops other symptoms (nausea, vomiting, headache or fainting) or if you are unsure about the severity of CO exposure, seek medical assistance.

Carob (Ceratonia siliqua)

Plants

The plant is non-toxic.

Cashew (Anacardium occidentale)

Plants

The plant is toxic, but ingesting a small amount rarely causes symptoms. Shelled cashews and cashew tree fruit are non-toxic.

Cast-iron-plant (Aspidistra elatior)

Plants

The plant is non-toxic.

Caucasian rockcress (Arabis caucasica)

Plants

The plant is non-toxic.

Cetirizine

Substances

Keywords: Alzyr®, Cetimax®, Cetirizin®, Heinix®, Histec®, Zyrtec®​

Ingesting a few tablets or taking a few gulps of cetirizine mixture is not toxic and does not require specific treatment. If the ingested amount is greater, contact the Poison Information Centre to confirm toxicity.

Chalk

Substances

Keywords: Crayons, board chalk, wax pastel

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

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