I have 40 years of experience, and specialize in the field of basic medical science, non-clinical medicine with specific knowledge in the areas of toxicology, pharmacology, medical biochemistry, drug toxicity, adverse drug reactions, illicit drugs, nutritional supplements and drug interactions. I have published on such topics as toxicology, forensic toxicology, drug metabolism, drug developments, toxic reactions to drugs and chemicals, bacterial infections and antibiotics. I have testified 50 times on topics such as toxicity of chemicals, pharmaceuticals illicit drugs, prescribing errors, drug overdoses, wrongful deaths and drug interactions. I have been a practicing toxicologist for 44 years with experience in product developments and as an expert witness involving toxicities.