The capability of carbon nanotubes to have synergistic effect on the bioavailability of artemisinin was investigated. The uptake of drug molecules from a solution into carbon nanotubes (CNTs) will be achieved adsorption of 88.7% of artemisinin onto CNTs surface without alteration in drug properties. The MTT assays on K562 cancer cell lines proved that CNTs enhance the anticancerous effect of artemisinin. The interaction between artemisinin and DNA was also studied. A sensitive impedimetric immunosensor was developed for determination of human growth hormone (hGH) and insulin like growth factor-1 (IGF-1). A selective molecularly imprinted polymer (MIP) was synthesized for isoxicam pre-concentration, followed by its spectrophotometric determination. A new MIP-CNT modified carbon paste electrode was proposed for the square wave voltammetric determination of rutin.