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Contraceptive pills
A single dose is considered harmless. Does not require treatment.
Coral bead plant (Nertera granadensis)
The plant is non-toxic.
Corn cockle (Agrostemma githago)
The plant is toxic, but ingesting a small amount rarely causes symptoms.
Cornflower (Centaurea cyanus)
The plant is non-toxic.
Corrosive 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)
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)
The plant is non-toxic.
Cosmos (Cosmos)
The plant is non-toxic.
Cotoneaster (Cotoneaster)
The plant is toxic, but ingesting a small amount rarely causes symptoms. If the berries have been ingested, monitoring at home is sufficient. If more symptoms develop, such as severe vomiting, seek medical attention.
Cotyledon (Cotyledon)
The plant is non-toxic.