Patent ID: 7910553

Claim:
A method of delivering a drug to a patient comprising administering to the patient an effective amount of a compound of formula (I): DRUG-X—Y (n) —Z (n′) —Z′ (n″) —R (I) wherein each X, Y, Z, and Z′ is independently Met, Val, Thr, Tyr, Trp, Ser, Ala, or Gly; R is H; n is 1, and each n′ or n″ is independently 0 or 1; or a pharmaceutically acceptable salt thereof, with the proviso that the compound of formula (I) is influxed into target cells at a rate that is greater than or equal to a rate of influx of the respective DRUG, and is effluxed from target cells into which the compound has previously been influxed at a second rate that is lower than a rate at which the respective DRUG is effluxed from the target cells, wherein DRUG is selected from a set of bioactive compounds consisting of amioderone, lidocaine, quinidine, chloroquine, emetine, hydroxychloroquine, quinacrine, quinine, bepridil, diltiazem, felodipine, nifedipine, nisoldipine, nitrendipine, tiapamil, verapamil, chlorpromazine, trifluperazine, actinomycin D, colchicines, daunorubicin, doxorubicin, etoposide, mitomycin C, mithramycin, puromycin, taxol, topotecan, triamterene, vinblastine, vincristine, indinavir, nelfinavir, ritonavir, saquinavir, aldosterone, clomiphene, cortisol, deoxycorticosterone, progesterone analogs, testosterone, cyclosporine A, cyclosporine H, tacrolimus, sirolimus, reserpine, yohimbine, bupivacaine, desipramine, trazadone, ivermectin, valspodar, and terfindine.