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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.

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Coral bead plant (Nertera granadensis)

Plants

The plant is non-toxic.

Corn cockle (Agrostemma githago)

Plants

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

Corrosive substances

Substances

Keywords: sulfuric acid, nitric acid, hydrochloric acid, lye, soda, base

Orally: Rinse the mouth. If the person develops symptoms such as difficulties in swallowing, increased salivation, vomiting or abdominal pains, seek immediate medical assistance.

Skin and Eye: Rinse the skin and eyes immediately with water for 30-60 minutes. If pain, photophobia or other symptoms occur in the eye, seek medical assistance.

Corticosteroids (cortisone)

Substances

Keywords: Hydrocortisone, Hydrocortison®, Prednisolon®, Prednison®​

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

Corydalis (Corydalis)

Plants

The plant is non-toxic.

Cosmos (Cosmos)

Plants

The plant is non-toxic.

Couch grass (Elytrigia repens)

Plants

The plant is non-toxic.

Cow Parsley [F] (Anthriscus sylvestris)

Plants

[F] = May cause a phototoxic reaction if the skin is exposed first to the sap and then to sunlight. Photodermatitis, or phytophotodermatitis, is manifested as redness, blistering, and burning of the skin. Skin exposed to the sap should be washed with soap and water. Symptoms can be avoided by protecting the skin from sunlight for at least 48 hours. Skin symptoms may be severe and require medical attention.

Cranberry (Vaccinium oxycoccos)

Plants

The plant is non-toxic.

Creeping saxifrage (Saxifraga stolonifera)

Plants

The plant is non-toxic.

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