The nanocarrier systems involves different toxicity consist of physiological, physicochemical and molecular considerations. Normally nanocarriers show exposure through the skin, the respiratory tract, the gastrointestinal tract and the lymphatic systems. The property of nanocarrier systems to alter the properties of xenobiotics producing pharmaceutical changes in stability, solubility along with pharmacokinetic disposition and may induce cytotoxicity or genotoxicity. The enviourmental, health and safety issues are important factors to be studied while using the nanocarrier systems.
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