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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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Nail polish

Substances

Nail polish is not easy to swallow and the bottles tend to be small. Therefore, the risk of ingesting toxic doses of nail polish is small.

Other nail care products may contain harmful substances. Contact the Poison Information Centre to confirm toxicity.

Naproxen

Substances

Keywords: Miranax®, Naprometin®

A single dose not exceeding 100mg/kg of body weight is harmless and does not require treatment. If the ingested amount is over 100mg/kg of body weight (or over 5g if body weight over 40 kg), contact the Poison Information Centre to confirm toxicity.

Nicotine products

Substances

Keywords: Nicotinell®, Nicorette®, Nicotine gum

Children: If the amount ingested is under 6 mg of any nicotine product and there are no symptoms or only gastrointestinal symptoms, monitor the child at home. If the ingested amount is greater or the child develops severe gastrointestinal or CNS symptoms, seek medical assistance.​ 

For snus, nicotine pouch and electronic cigarette, check the information separately.

Nitro®

Substances

Keywords: Glyceryl trinitrate, Nitroglycerin ®

Four sublingual 0.5 mg nitroglycerin tablets or less is not likely to cause symptoms that require special treatment. If the amount is greater contact the Poison Information Centre to confirm toxicity.​

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