Drug Toxicity / Drug Monitoring/ Drug Therapeutic Levels
Therapeutic benefits of a drug on the market far outweighs it risks. 
All drugs are likely to have some side effects. Therapeutic monitoring of drugs is now readily available to make some of the drugs even safer. The current medindia utility has a list of 88 drugs with complete information in the following areas:

a. Normal levels and critical levels where the drug is likely to be toxic.
b. Physiological action and toxicity of the drug. 
c. Interpretation of drug levels.
d. Laboratory test methods for monitoring drug levels. 
e. Therapeutic monitoring and management of drug levels.
f.  Related drugs and lab test information