When medications (such as digoxin, lithium, or certain blood pressure drugs) are taken together with Lasix, drug interactions can occur. Some of the drug interactions with Lasix may result in certain side effects, such as hearing loss, extremely low blood pressure, or low potassium levels. Prior to taking Lasix, be sure to talk to your healthcare provider about potential drug interactions that may apply to you. Your healthcare provider may need to monitor you more closely and/or adjust your dose of these medications.