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Get a prescription refill ror Furosemide (Lasix) online

Furosemide is typically prescribed to treat edema or fluid retention due to kidney, heart, or liver disease. It is also prescribed alone or in combination for high blood pressure. Getting a Furosemide prescription online is very straightforward; you can connect with a doctor at any time and place of your choice at Your Doctors Online. However, please note that Furosemide online will only be provided after consultation with the doctor and if the treatment is suitable and safe for you.

What is Furosemide (Lasix)?

Furosemide is a prescription drug for treating high blood pressure and edema (water retention). It is available as Lasix, Furoscix, Diaqua-2, and Lo-Aqua in the market. Furosemide belongs to the diuretic class of medication. Some other medications from this class include Bumetanide, Torsemide, and Ethacrynic acid. Due to its safety profile and effectiveness, Furosemide is not a first-line of treatment in patients with hypertension; however, it is often prescribed for edema due to congestive heart failure, liver cirrhosis, and renal disease.

Uses of Furosemide (Lasix)

Edema and fluid retention are treated with diuretics like Furosemide when the underlying cause is something like heart failure, cirrhosis of the liver, or kidney disease. The stimulation of urination aids in the reduction of swelling and the alleviation of associated symptoms. Furosemide is used to treat hypertension when other antihypertensive medications have failed. Excess fluid and salt loss is also discussed for conditions like pulmonary edema and hypercalcemia. Strong diuretic effects necessitate close medical supervision, as do concerns about electrolyte balance and other potential side effects.

How does it work?

Furosemide is a loop diuretic that is indicated for use in edema and high blood pressure. Furosemide acts on the kidney to increase the excretion of urine from the kidney by inhibiting electrolyte reabsorption. This helps in excessive water loss from the body leading to less fluid retention in edema. Low levels of water content and lower electrolyte reabsorption also help manage low blood pressure.

How to take Furosemide? 

Furosemide is an oral medication available as a tablet, in varying dosage strengths of 20 mg, 40 mg, and 500 mg It is vital to take Furosemide online prescription as directed.

The tablet can be taken once a day, with or without food, as it does not upset the stomach if taken with food. Take it in the morning time and avoid taking it in the later hours of the day as it may cause sleep disturbances.

Side effects of Furosemide (Lasix)

Some side effects include: 

  • Increased thirst
  • Confusion
  • Muscle cramps
  • Weakness
  • Sensitivity to sunlight
  • Headache
  • Nausea
  • Diarrhea
  • Weakness
  • Blurred vision

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Hi I’m dr. Nicole. How may I help you?

Dr. Nicole, I have long-term kidney disease and high blood pressure and have developed leg swelling. Can you help? 


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  • Furosemide (Lasix) 40 mg tablet.
  • Take one tablet once daily for one month. 


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Precautions and contraindications

  • Furosemide may interact with various medications, such as Desmopressin, Lithium, Salicylates, NSAIDs, Indomethacin, and Ethacrynic acid. If you take other medicines, share them with your healthcare professional before taking Furosemide.
  • Electrolyte disturbances, specifically hypokalemia (low potassium levels), are possible side effects of furosemide. Electrolyte levels should usually be checked regularly.
  • Dehydration can occur if a person has excessive diuresis. It’s important to drink plenty of water and tell a doctor if you start feeling dizzy or faint because you’re dehydrated.
  • Since the kidneys are responsible for furosemide’s primary route of excretion, its dosage may need to be adjusted for those with compromised renal function. There may be a need for routine monitoring of kidney function.
  • Gout can be made worse by furosemide because it raises uric acid levels.
  • Patients with a previous history of gout require special attention.
  • Blood pressure can drop quickly upon standing after taking Furosemide.
  • People who have a history of low blood pressure should exercise caution.
  • People who are allergic to Furosemide or any other sulfa drug should not take it.

FAQs About Furosemide (Lasix)

What happens when you stop taking Lasix?

When you stop taking Furosemide abruptly, it may lead to an imbalance of electrolyte and fluid retention. The electrolyte imbalance can be severe due to increased sodium (hypernatremia) and decreased potassium (hypokalemia). This can worsen your existing symptoms of the disease.

Should you drink a lot of water when taking Lasix?

It is generally recommended to avoid drinking a lot of water while taking Furosemide. It is recommended to take enough water so you may not feel thirsty or dehydrated for a long duration, especially when exercising and in hot weather.

How can I refill my Lasix prescription?

You can connect with one of our qualified doctors at Your Doctors Online to get a refill for your Lasix prescription online.

Who should not take Lasix?

It is recommended that patients with anuria and known hypersensitivity to Furosemide, dehydration, and electrolyte imbalance should not take Furosemide. At the same time, others with liver and kidney disease, diabetes, and gout should use it cautiously and as directed by the healthcare provider. Avoid taking Lasix when pregnant or breastfeeding unless otherwise advised by your doctor.

What happens if I miss a dose of Lasix?

If the time for your next dose is not near, take the missed dose of Lasix as soon as you remember; otherwise, skip your dose and take the next dose in time. Never double the dose to compensate for the missed dose. 

What happens if I take too much Lasix?

Too much Lasix intake can lead to severe dehydration due to excessive water and fluid loss from the body. You may also experience severe electrolyte imbalances, which can prove life-threatening if not treated immediately due to excessive intake of Furosemide.

What is a stronger diuretic than furosemide?

Torsemide is considered a more potent diuretic than furosemide because it has better bioavailability, a longer half-life, and higher potency. However, Furosemide is still the most commonly used diuretic for fluid retention due to kidney, liver, and heart disease.

How long does it take for Furosemide to reduce swelling?

Furosemide starts working immediately after intake within 1hr, but you may observe improvement in your symptoms within a few weeks after you begin taking Furosemide regularly.

Your Doctors Online uses high-quality and trustworthy sources to ensure content accuracy and reliability. We rely on peer-reviewed studies, academic research institutions and medical associations to provide up-to-date and evidence-based information to the users.

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