This invention relates to a composition formulated into a parenteral or injectable dosage form for the treatment of cancer, more particularly, this invention relates to a composition formulated into a parenteral dosage form suitable for administration in and around cancerous tissue, the composition including: a pharmaceutically acceptable solvent including from 20% to 100% ethanol (V/V) and a reverse transcriptase inhibitor exhibiting an anti-cancer effect, dissolved in the solvent.