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Calcium tablets
Keywords: Calcium, Calcichew®, Calsorin®, Kalcipos®
A single dose of calcium tablets is unlikely to cause symptoms. Does not require treatment.
However, some products may contain sweeteners, which may cause gastrointestinal symptoms.
Calla, Calla lily (Zantedeschia)
The plant causes local irritation. The plant fluid, or sap, can cause local irritation symptoms, such as stinging and burning at the exposure site. Does not absorb into the body. Rinse the exposed area with water.
Candles
A single dose is considered harmless. Does not require treatment.
Cannabis sativa (Cannabis sativa)
The plant is toxic, but ingesting a small amount rarely causes symptoms.
Car lock de-icer
Depending on the ingredients, see isopropanol or glycols.
Carbon monoxide
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.
Cashew (Anacardium occidentale)
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)
The plant is non-toxic.
Cetirizine
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
Keywords: Crayons, board chalk, wax pastel
A single dose is considered harmless. Does not require treatment.