the mouth. The sublingual mucosa is highly permeable and thereby provides access to the underlying expansive network composed of capillaries, leading to rapid drug absorption. Buccal Buccally administered medication is achieved by placing the drug between gums and the inner lining of the cheek. In comparison with sublingual tissue, buccal tissue is less permeable resulting in slower absorption. Sublabial administration Sublabial administration Research Neural drug delivery is the next step beyond the basic addition of growth factors to nerve guidance conduits. Drug delivery systems allow the rate of growth factor release to be regulated over time, which is critical for creating an environment more closely representative of in vivo development environments. See also ADME Catheter Dosage form Drug injection Ear instillation Hypodermic needle Intravenous marijuana syndrome List of medical inhalants Nanomedicine Absorption (pharmacology) References External links The 10th US-Japan Symposium on Drug Delivery Systems FDA Center for Drug Evaluation and Research Data Standards Manual: Route of Administration. FDA Center for Drug Evaluation and Research Data Standards Manual: Dosage Form. A.S.P.E.N. American Society for Parenteral and Enteral Nutrition Drugs Pharmacokinetics Routes of administration