Ask your health care provider if Sumycin may interact with other medicines that you take. EDITOR’S TIP: For the best results, our experts recommend using weight loss pills for at least 3 months. DPDPE may increase the sedative activities of Ropinirole. The metabolism of Fulvestrant can be increased when combined with Carbamazepine. Metformin is substantially excreted by the kidney, and the risk of metformin accumulation and lactic acidosis increases with the degree of renal impairment. Apply sunscreen to all skin that will be exposed.