Before you start treatment with Gemtesa, talk to your doctor:, About all the medications you take, including prescription, over-the-counter, vitamins, and herbal supplements. If you are taking digoxin, your digoxin levels should be monitored before starting Gemtesa., About your allergies, About your health conditions, If you are pregnant or plan to become pregnant, If you are breastfeeding or plan to breastfeed, Gemesa can cause urinary retention. Your risk may be greater if you have bladder outlet obstruction or if you are taking muscarinic antagonists for overactive bladder. If you are not sure whether or not you are taking a muscarinic antagonist, ask your doctor., Treatment with Gemtesa is not recommended if you have end-stage kidney disease or severe liver problems About all the medications you take, including prescription, over-the-counter, vitamins, and herbal supplements. If you are taking digoxin, your digoxin levels should be monitored before starting Gemtesa., About your allergies, About your health conditions, If you are pregnant or plan to become pregnant, If you are breastfeeding or plan to breastfeed