Pemetrexed Clonmel is a medicine used in the treatment of cancer. It is given in combination with cisplatin, another anti-cancer medicine, as treatment for malignant pleural mesothelioma, a form of cancer that affects the lining of the lung, to patients who have not received prior chemotherapy. Pemetrexed Clonmel is also given in combination with cisplatin for the initial treatment of patients with advanced stage of lung cancer. Pemetrexed Clonmel can be prescribed to you if you have lung cancer at an advanced stage if your disease has responded to treatment or it remains largely unchanged after initial chemotherapy Pemetrexed Clonmel is also a treatment for patients with an advanced stage of lung cancer whose disease has progressed after other initial chemotherapy has been used.