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Compare Aldactone vs. Lasix

Head-to-head comparisons of medication uses, side effects, warnings, and more.

Key takeaways

Spironolactone (Aldactone) and furosemide (Lasix) are both diuretics, but they work differently and are used for different purposes. Spironolactone is a potassium-sparing diuretic, meaning it helps you get rid of extra fluids without losing potassium. It's used to treat heart failure, high blood pressure, and swelling from liver or kidney problems. Furosemide, on the other hand, is a loop diuretic that makes you urinate more by getting rid of extra water and electrolytes, including potassium. It's mainly used to relieve swelling and can also lower blood pressure, though it's not a first-choice option for high blood pressure. Spironolactone can cause side effects like breast tenderness and lower sex drive, while furosemide can cause dizziness and make your skin more sensitive to the sun. Both medications are available in generic forms and come in tablet and liquid forms for those who have trouble swallowing pills.

  • Spironolactone (Aldactone)
    Furosemide (Lasix)
  • Spironolactone (Aldactone)
    Furosemide (Lasix)

  • Summary of Aldactone vs. Lasix

    Summary for Potassium sparing diuretic
    Prescription only

    Spironolactone (Aldactone) is a type of potassium-sparing diuretic (water pill). It's used to treat heart failure, high blood pressure, and swelling from kidney or liver problems in adults. Because it blocks aldosterone (a hormone that affects sodium and potassium levels), spironolactone (Aldactone) can also treat conditions where there's too much aldosterone. Spironolactone (Aldactone) is taken by mouth, generally once or a few times a day, depending on your condition. Some common side effects of this medication include breast tenderness (males and females) and loss of libido (in males).

    Summary for Diuretic (water pill)
    Prescription only

    Furosemide (Lasix) is a loop diuretic, a type of water pill. Furosemide (Lasix) is used to relieve swelling from extra fluids in children and adults. This medication can also lower blood pressure, though it's not a first-choice option for this condition. Furosemide (Lasix) comes as a tablet that's taken by mouth, typically once or twice daily. It's also available as an oral solution for people who've trouble swallowing tablets. Furosemide (Lasix) will cause you to urinate more often as a side effect, so it's best to not take this medication too close to bedtime.

  • Indications of Aldactone vs. Lasix

    Indications for
    •Heart failure
    •High blood pressure
    •Swelling due to liver damage (cirrhosis)
    •Swelling due to nephrotic syndrome (a rare kidney condition) - tablets only
    •Primary aldosteronism (a hormone imbalance) - tablets only
    Indications for
    •Swelling (edema) due to heart failure, liver problems, or kidney problems
    •High blood pressure

  • Pros and Cons of Aldactone vs. Lasix

    Pros and Const for Potassium sparing diuretic
    Pros
    •Taken by mouth
    •Oral suspension available for adults who've difficulty swallowing tablets
    •Lower-cost generics available
    Cons
    •Can make you urinate more often
    •Need to get blood tests regularly to check your electrolytes and kidney health
    •Can cause breast growth and lower sex drive in males
    Pros and Const for Diuretic (water pill)
    Pros
    •Starts working within an hour after you take it
    •Available in liquid form for children or people who have trouble swallowing pills
    •Available as a lower-cost generic medication
    Cons
    •Not a good choice for people with a sulfa allergy
    •Might cause you to urinate in the middle of the night if you take it later in the day
    •Can make you more dizzy and raise your risk for falling down

  • Common Side Effects of Aldactone vs. Lasix

    Common Side Effects for
    •Dizziness
    •Headache
    •Sleepiness
    •Nausea
    •Vomiting
    •Diarrhea
    •Stomach cramps
    •Enlargement of male breasts
    •Breast pain
    •Lower sex drive
    •Sexual dysfunction
    •Irregular or lack of menstrual periods
    •Leg cramps
    •Higher potassium levels
    •Lower sodium levels
    Common Side Effects for
    •Urinating more often
    •Dizziness
    •Headache
    •Feeling off balance when you get up suddenly
    •Skin sensitive to the sun

  • Warnings of Aldactone vs. Lasix

    Common Side Effects for
    •High blood potassium levels
    •Low blood pressure and kidney problems
    •Abnormal electrolyte levels
    •Breast pain or swelling
    Common Side Effects for
    •Dehydration and electrolyte imbalance
    •Caution in people with liver problems
    •Hearing problems
    •Problems with urination
    •Allergic reaction
    •Gout

  • Prices with our coupons for Aldactone vs. Lasix

    Learn more about Spironolactone
    Learn more about Furosemide

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