... of AbsorptionRoutes of AbsorptionEnteral: Oral, rectal.Parenteral: Intradermal, subcutaneous, intravascular (intravenous, intra-arterial ), intramuscular. Cutaneous: Topical and transdermal.Miscellaneous: ... Gastrointestinal AbsorptionDelayed gastric emptying: Often results from fatty meals, anticholinergics, antiserotoninergics (ondansetron ), barbiturates, ethanol, glutethi-mide, methaqualone, and opioids.Drug ... management, gen-eral preventive medicine and public heath, occupational and environmental medicine, and medical toxicol-ogy. He currently serves as Professor of Public Health and Program Head, Environmental...