In addition to overdoses of drugs, many plants are toxic to humans.
Symptoms vary based on the type of toxin ingested.
Many will cause nausea and vomiting, but most will be associated with other, more specific symptoms such as weakness, numbness, hot and cold reversal, and rash. See other sections in this guide for details on specific poisonings. If the victim is alert and ingestion is recent, with the exception of fuel oils and caustic soaps, induce vomiting. To cause someone to vomit, use syrup of ipecac, which is often in first aid kits. Do not induce vomiting with an oily poison because the substance may enter the lungs where it will create even greater problems.