
Warfarin ( Coumadin): Coumadin is a blood thinner used to prevent blood clots.In excess, they can cause difficulty breathing, coma, and heart failure. Beta blockers: Beta blockers are a class of drugs used to treat heart conditions (for example, angina, abnormal heart rhythms) and other conditions, (for example, high blood pressure, migraine headache prevention, social phobia, and certain types of tremors).Food that has not been properly prepared or handledĭrugs that are helpful in therapeutic doses may be deadly when taken in excess.

Drinking water contaminated by agricultural or industrial chemicals.


Many poisons, however, are substances meant for humans to eat, including foods and medicines. Poisons include highly toxic chemicals not meant for human ingestion or contact, such as cyanide, paint thinners, or household cleaning products.
