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Methanol
Methanol is a highly toxic substance. Whenever a person is suspected of having ingested methanol, seek immediate medical assistance.
Milk caps (Lactarius)
Many Milk caps can, if eaten raw or uncooked, cause gastrointestinal symptoms (nausea, vomiting, abdominal pain and diarrhea). In most cases, the symptoms can be treated at home with sufficient amount of fluids and rest. Seek medical assistance if symptoms persist. Save the mushroom for possible identification afterwards.
Mosquito plates and coils
Does not require treatment when ingested in small doses. If ingested in greater amounts, contact the Poison Information Centre to confirm toxicity.
Mouse-ears (Cerastium)
The plant is non-toxic.
Multivitamins
Keywords: Vitamins, Berocca ®
Multivitamins contain water-soluble and fat-soluble vitamins varying amounts. In addition, some products may contain iron, zinc and other minerals.
If several tablets have been ingested, contact the Poison Information Centre to confirm toxicity.
Nail polish
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
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
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®
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.
Oftan Akvakol® eye drops
A 5mg/ml eye drop solution accidentally administered orally is harmless, when the dose is less than 10ml. Does not require treatment.