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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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Liberty cap (Psilocybe semilanceata)

Mushrooms

Liberty cap is poisonous to the central nervous system (CNS). Disorientation, dizziness and hallucinations occur rapidly after ingestion. Maximum of two ingested mushrooms does not require any treatment.

If ingested in greater amounts, seek medical assistance. Contact the Poison Information Center if someone has ingested Liberty cap. Save the mushroom for possible identification afterwards.​

Licorice plant (Helichrysum petiolare)

Plants

The plant is non-toxic.

Lily of the Valley (Convallaria majalis)

Plants

The entire plant is toxic, but ingesting a small amount rarely causes symptoms. If less than 10 flowers or berries have been ingested, monitoring at home is sufficient. If more symptoms develop, such as severe vomiting, seek medical attention.

Linden (Tilia)

Plants

The plant is non-toxic.

Lingonberry (Vaccinium vitis-idaea) leaves

Plants

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

Lipstick plant (Aeschynanthus radicans)

Plants

The plant is non-toxic.

Lobelia (Lobelia)

Plants

The plant is non-toxic.

Indian tobacco (L. inflata) and Cardinal flower (L. cardinalis):  The plant is toxic, but ingesting a small amount rarely causes symptoms.

Loosestrifes (Lysimachia)

Plants

The plant is non-toxic.

Lovage [K][F] (Levisticum officinale)

Plants

[K] = Can be used for human consumption in moderation.

[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.

Lucky Clover (Oxalis tetraphylla)

Plants

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

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