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Pharmacology and toxicology of naturally occurring toxins international encyclopedia of pharmacology and therapeutics section 71 volume ii v 2 raskova h on amazoncom free shipping on qualifying offers pharmacology and toxicology of naturally occurring toxins international encyclopedia of pharmacology and therapeutics section 71 volume ii v. 15 toxicology terms o the term toxicant refers to toxic substances that are produced by or are a byproduct of human made activities o the term toxin refers to toxic substances that are produced naturally o a toxic symptom is any feeling or sign indicating the presence of a poison in the system o toxic effects refers to the health effects that occur due to exposure to a. Pharmacology and toxicology are very similar disciplines that require an understanding of basic properties and actions of chemicals however pharmacology places more emphasis on the therapeutic effects of chemicals particularly drugs while toxicology focusses more on the adverse effects of chemicals and risk assessment. Environmental toxicology and pharmacology publishes the results of studies concerning toxic and pharmacological effects of human and veterinary drugs and of environmental contaminants in animals and man areas of special interest are molecular mechanisms of toxicity biotransformation and toxicokinetics including toxicokinetic modelling molecular biochemical and physiological mechanisms . It is also similar to pharmacology and were going to be comparing these two disciplines toxicology and pharmacology throughout this lecture in pharmacology we have very good control over who receives what dosage of what substance as described by the 5 rs you are responsible for giving the right medication to the right patient