Lasix is the name of furosemide, a prescription drug used to eliminate excess water and salt in people who have problems with fluid retention.
Tumor and fluid retention (also known as edema) can be caused by congestive heart failure, liver or kidney disease, and other conditions. Lasix is also used alone or together with other drugs to treat high blood pressure (hypertension).
Lasix is part of a group of drugs known as loop diuretics, which reduce the amount of water in the body, increasing the flow of urine.
Approved by the Food and Drug Administration (FDA) in 1966, Lasix is manufactured by SanofiAventis US, and its generic form (furosemide) is produced by several manufacturers. It is available in tablets (20, 40 and 80 milligrams), solution (10 mg) and injection (10 mg).
Lasix has also been used by racehorses to treat exercise-induced pulmonary hemorrhages, which has caused serious debates in recent years. Supporters argue that drug use is ethical and humane, while opponents call it a drug that improves effectiveness, saying that its continued use weakens the genetics of a racehorse.
Lasix Warnings (Furosemide)
Older patients taking Lasix often have age-related problems with the liver, kidneys, or heart.
Before taking Lasix, talk with your doctor about whether you are allergic to it, and whether you have other allergies, especially with the participation of sulfa drugs:
- Sulfamethoxazole (Bactrim, Septra)
- Sulfasalazine (Azulfidine)
- Sulfisoxazole (Gantrizin)
- Erythromycin Sulfisoxazole (Pediazole)
Tell your doctor if you change your workout and diet, quit smoking or reduce stress. These changes may require your doctor to re-evaluate the dosage.
When using Lasix, your doctor should conduct periodic tests of the kidneys and the level of minerals in your blood to monitor your progress or check for side effects. It is also important to check your blood pressure regularly, so ask your doctor how you can do it at home.
If you have diabetes, Lasix can affect your blood sugar, so you need to monitor and report it to your doctor. Your diabetic drug or diet can also be adjusted.
If you experience prolonged diarrhea or vomiting, be sure to tell your doctor, as this can lead to dehydration.
Be sure to give your doctor a full medical history to help him decide if this medication is right for you. Tell your doctor if you have any of the following conditions:
- Difficulty of urination
- Kidney problems
- Problems with the liver
- Hearing problems
- High levels of uric acid
- Low levels of calcium, chlorine, potassium, magnesium or sodium in the blood
- Low blood pressure or low blood volume
- Low protein in the blood because of kidney problems
Pregnancy and Lasix (Furosemide)
It is not yet clear how Lasix can affect your unborn child. If you plan on breastfeeding, you should know that Lasix is falling into your breast milk. Tell your doctor right away if you are pregnant, plan to become pregnant or breastfeed.
Side Effects of Lasix
Call your doctor right away if you notice any of these side effects.
- Allergic reaction
- Swelling, peeling, red skin rash
- Chest pain, dyspnea
- Weakness, muscle twitching
- Dry mouth, increased thirst, muscle cramps, nausea or vomiting, uneven heartbeat
- Sudden and severe pain in the stomach, nausea, vomiting, fever, lightheadedness
- Hearing loss, ringing in the ears
- Dizziness, fainting
- Severe diarrhea
- Unusual bleeding or bruising
- Yellow skin or eyes
If you have these less serious side effects, talk with your doctor:
- Loss of appetite
- Stomach cramps
Those who use Lasix also reported ringing in the ears, especially when they had a severe kidney disease, taken a higher dose than prescribed, or used Lasix along with certain medications.
Lasix can also lead to severe dehydration.
Stop taking Lasix and consult a doctor immediately if you have the following:
- Muscle spasms
- Unusual fatigue
- Severe dizziness
- Unusual dry mouth / thirst
- Fast / irregular heartbeat
- An unusual decrease in the amount of urine that your body produces
- Swelling of the hands and feet
- Hearing changes
- Abdominal pain
- Yellowing of eyes or skin
Seek immediate medical attention if you experience an allergic reaction. Symptoms of the problem may include difficulty breathing, swelling of the face, lips, tongue, or throat.
Lasix (Furosemide) and interaction with other drugs
Give your doctor a complete list of all medications you use, including vitamins and herbal products. Some drugs can interact with Lasix, increasing side effects or decreasing its effectiveness.
Consult your physician before using Lasix with the following drugs:
- Antibiotics, such as cephalexin (ceflex) or neomycin (Neo-Fradin)
- Lysinopril (Prinivil or Zestril)
- Valsartan (Diovan)
- Chlorine hydrate (Noctec)
- Cisplatin (platinotin or platinol-AQ)
- Cyclosporine (Sandimmune, Neoral or Gengraf)
- Ectric acid (Edecrine)
- Lithium (Eskalith or Lithobid)
- Methotrexate (Trexall)
- Non-steroidal anti-inflammatory drugs (NSAIDs) such as indomethacin (indocin), norepinephrine (Levophed)
- Phenytoin (Phenytek, Dilantin or Dilantin-125)
- Succinylcholine (Anectine or Quelicin)
- Sucralfate (karafat)
- Tubokurarin (Tubarin)
If you are taking an aminoglycoside (gentamicin / tobramycin), it can affect your hearing.
Lasix (Furosemide) and other interactions
Lasix can lower the level of potassium in the blood, so you should closely monitor this. If necessary, you can take potassium supplements.
It is also known that this medicine makes you more sensitive to the sun, so try to avoid prolonged exposure to the sun, as well as sunburn. Be sure to use sunscreen and protective clothing when you go out.
Since Lasix can make you dizzy or cause blurred vision, it is important to avoid driving, using technique or participating in any activity that requires you to be vigilant until you know how the drug affects you.
You should also limit the consumption of alcoholic beverages.
If you suffer from high blood pressure, do not use over-the-counter suppressants or medications that can affect your blood pressure.
To avoid dehydration, drink plenty of fluids while taking Lasix (unless your doctor restricts fluid intake).
Your doctor will determine what dose you should take based on your condition and medical history. Never stop taking Lasix and do not change your dose without the doctor’s approval.
Adults who have problems with fluid retention usually take from 20 mg to 80 mg. The dose in children will vary depending on what your doctor deems appropriate.
Adults who have high blood pressure often begin with 40 mg, twice a day. Dosage can be adjusted for elderly patients.
If you use sucralfate (Carafate), cholestyramine (Questran or Prevalite), and colestipol (Colestid), you should take these medications at least two hours before you take Laxix.
Immediately notify your doctor if your condition does not improve or worsen.
Lasix (furosemide) Overdose
If you think that you may have taken too much, call the emergency department or the toxicology center immediately.
The symptoms of an overdose range from fainting and severe weakness to a serious reduction in the amount of urine that your body produces.
The missed dose of Lasix (Furosemide)
If you forget to take the medicine, take it as soon as you remember, if this is not the time for the next dose. If so, skip it and resume the regular schedule. Never double the dose and do not take more than one at a time.