 [ Symptoms ] why was i prescribed with folic acid glycomet and oosure for delayed period [ Disease ] first off let me just clarify that not everyone who takes a diuretic water pill needs to take a potassium supplement diuretics come in two general types potassium sparing and non potassium sparing also called loop diuretics most of the newer diuretics are potassium sparing which means they do not strip potassium from the body the way loop diuretics do the reason i want to clarify this is because patients who take loop diuretics like lasix furosemide should always receive a prescription for potassium from their doctor if you are taking a diuretic and did not receive a prescription for potassium they you may not need to take any extra potassium potassium is a key mineral for heart health but too much or too little potassium can cause an irregular heartbeat thus it is not always a good idea to take a potassium supplement if a person wants to make sure they are getting enough potassium they should consider eating potassium rich foods like sweet potatoes tomato sauces and beans this is a safer way to get potassium than taking a pill    unless a medical professional tells you to take a pill wishing you well