How does lasix work in the body




















Taking lithium with furosemide can increase the levels of lithium in your body. This raises your risk of side effects from lithium. Taking certain muscle relaxers with furosemide can increase the effects of these drugs.

This raises your risk of side effects. Taking furosemide with other blood pressure drugs can cause your blood pressure to drop to a dangerously low level. Taking NSAIDs nonsteroidal anti-inflammatory drugs with furosemide can increase the levels of these drugs in your body. This raises your risk of dangerous side effects. NSAIDs include:.

Taking high doses of levothyroxine with furosemide can make levothyroxine less effective. Taking sucralfate with furosemide can make furosemide less effective. Taking other diuretics with furosemide can increase your risk of hearing damage or loss. However, because drugs interact differently in each person, we cannot guarantee that this information includes all possible interactions.

Always speak with your healthcare professional about possible interactions with all prescription drugs, vitamins, herbs and supplements, and over-the-counter drugs that you are taking. If you have an allergy to sulfonamides sulfa drugs , you may also be allergic to furosemide. Taking this drug can cause a severe allergic reaction, causing symptoms such as:. Taking it a second time after any allergic reaction to it could be fatal cause death. For instance, it can worsen a sudden drop in blood pressure when you stand up after sitting or lying down.

It can also make you feel dizzier or more lightheaded. For people with kidney problems: Furosemide is removed from your body by your kidneys.

If you have kidney problems, more of the drug may stay in your body longer. This could lead to dangerous side effects, including very low blood pressure. Your doctor may start you on a lower dose of this drug. Your doctor may also monitor how well your kidneys are working to make sure furosemide is safe for you to take. Furosemide can cause very low electrolyte levels, which can cause serious liver damage and loss of brain function.

Electrolytes are minerals that help control the fluid balance in your body and help with other important functions. Your doctor will monitor you closely.

For people with diabetes : Furosemide can make it harder to control your blood sugar glucose levels. Before taking this drug, be sure your doctor knows you have diabetes. For people with bladder disorders: If you have severe problems with emptying your bladder completely, furosemide can make your condition worse. Before taking this drug, be sure your doctor knows you have a bladder disorder.

For people with thyroid problems: High doses over 80 mg of furosemide can cause low levels of thyroid hormones. Be sure to tell your doctor about your thyroid problems before you start taking furosemide.

For pregnant women: Furosemide is a category C pregnancy drug. That means two things:. This drug should only be used if the potential benefit justifies the potential risk to the fetus. For women who are breastfeeding: Furosemide may pass into breast milk and can cause serious side effects in a child who is breastfed. It may also cause your body to produce less milk. Tell your doctor if you are breastfeeding.

You will need to decide either to stop breastfeeding, or stop taking this drug. For children: In premature infants and children younger than 4 years of age, furosemide may cause kidney problems. It can lead to kidney stones and calcium deposits in the kidneys. If furosemide is given to premature infants during the first few weeks of life, it may increase the risk of problems with the lungs and heart.

This dosage information is for furosemide oral tablet. All possible dosages and drug forms may not be included here. Your dose, drug form, and how often you take the drug will depend on:. The kidneys of older adults may not work as well as they used to. This can cause your body to process drugs more slowly. As a result, more of a drug stays in your body for a longer time. This increases your risk of side effects. Your doctor may start you on a lowered dose or a different medication schedule.

This can help keep levels of this drug from building up too much in your body. Furosemide is removed from your body by your kidneys. This can cause dangerous side effects. Your doctor may start you on a lower dose and monitor how well your kidneys are working to make sure this drug is safe for you.

However, because drugs affect each person differently, we cannot guarantee that this list includes all possible dosages. Always speak with your doctor or pharmacist about dosages that are right for you.

Furosemide oral tablet is used for short-term or long-term treatment. This raises your risk of serious problems such as stroke or heart attack.

If you are treating edema, your swelling could get worse. This increases your risk of serious problems such as pain, infections, leg ulcers long-lasting sores , and blood clots. For this drug to work well, a certain amount needs to be in your body at all times. If you take too much: You could have dangerous levels of the drug in your body.

Symptoms of an overdose of this drug can include:. If your symptoms are severe, call or go to the nearest emergency room right away. What to do if you miss a dose: Take your dose as soon as you remember. But if you remember just a few hours before your next scheduled dose, take only one dose. Never try to catch up by taking two doses at once. This could result in dangerous side effects.

But you will likely not feel any different. Your doctor will monitor your blood pressure. You can also check it at home using a home blood pressure monitor.

A prescription for this medication is refillable. You should not need a new prescription for this medication to be refilled. Your doctor will write the number of refills authorized on your prescription. You can do this using a home blood pressure monitor. Your doctor can tell you where to buy this device and how to use it.

Furosemide can cause low blood pressure. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.

Using this medicine with any of the following medicines is not recommended. Your doctor may decide not to treat you with this medication or change some of the other medicines you take. Using this medicine with any of the following medicines is usually not recommended, but may be required in some cases. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines. Using this medicine with any of the following medicines may cause an increased risk of certain side effects, but using both drugs may be the best treatment for you.

Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. Using alcohol or tobacco with certain medicines may also cause interactions to occur.

The presence of other medical problems may affect the use of this medicine. Make sure you tell your doctor if you have any other medical problems, especially:. Take this medicine exactly as directed by your doctor to benefit your condition as much as possible. Do not take more of it, do not take it more often, and do not take it for a longer time than your doctor ordered. Many patients who have high blood pressure will not notice any symptoms of the condition. In fact, most patients feel normal.

It is very important that you take your medicine exactly as directed and that you keep your appointments with your doctor even if you feel well.

In addition to using this medicine, treatment of your high blood pressure may include weight control and changes in the types of foods you eat, especially foods high in sodium salt or potassium.

Your doctor will tell you which of these are most important for you. You should check with your doctor before changing your diet. This medicine will not cure your high blood pressure, but it does help control it.

You must continue to take it as directed if you expect to lower your blood pressure and keep it down. You might have to take high blood pressure medicine for the rest of your life. If high blood pressure is not treated, it can cause serious problems such as heart failure, blood vessel disease, strokes, or kidney disease.

It may keep furosemide from working properly. The dose of this medicine will be different for different patients. Follow your doctor's orders or the directions on the label.

The following information includes only the average doses of this medicine. If your dose is different, do not change it unless your doctor tells you to do so. The amount of medicine that you take depends on the strength of the medicine.

Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine. If you miss a dose of this medicine, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule.

Do not double doses. Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light. Keep from freezing. It is very important that your doctor check the progress of you or your child at regular visits to make sure this medicine is working properly. Blood or urine tests may be needed to check for unwanted effects. Using this medicine while you are pregnant may cause your unborn baby to be bigger than normal. If you think you have become pregnant while using this medicine, tell your doctor right away.

This medicine may cause you or your child to lose more potassium from your body than normal hypokalemia. This is more likely to occur if you have liver disease e.

Tell your doctor if you become sick with severe or continuing nausea, vomiting, or diarrhea, and drink fluids to prevent getting dehydrated. Check with your doctor right away if you have dry mouth, increased thirst, muscle cramps, or nausea or vomiting.

Dizziness, lightheadedness, or fainting may occur, especially when you get up suddenly from a lying or sitting position. Getting up slowly may help. If the problem continues or gets worse, check with your doctor.

Stop using this medicine and check with your doctor right away if you have a sudden decrease in hearing or loss of hearing. You may also have dizziness or ringing in the ears. Tell your doctor if you have a feeling of constant movement of self or surroundings or a sensation of spinning. This medicine may cause an increase in blood sugar levels. If you are diabetic and notice a change in the results of your blood or urine sugar tests, check with your doctor. This medicine may make your skin more sensitive to sunlight.



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