T
The Daily Insight

Does Metolazone cause hypokalemia

Author

Andrew Campbell

Published Apr 14, 2026

Low sodium and potassium levels warning: In rare cases, taking metolazone has suddenly led to low sodium levels (hyponatremia) or low potassium levels (hypokalemia) or both. If this occurs, your doctor may have you stop using metolazone.

Is metolazone a potassium-sparing diuretic?

Thiazides, Loop Diuretics, and Potassium-Sparing Drugs Thiazides include hydrochlorothiazide, chlorthalidone, metolazone, indapamide. Examples of loop diuretics are furosemide and bumetanide. K+-sparing drugs are spironolactone, triamterene, and amiloride.

Which diuretics can cause hypokalemia?

Thiazide diuretics cause hypokalemia; at the level of the pancreatic B cells, this hypokalemia causes hyperpolarization of the B cell and decreases insulin secretion.

What are the side effects of metolazone?

  • dizziness.
  • weakness.
  • restlessness.
  • headache.
  • muscle cramps.
  • joint pain or swelling.
  • constipation.
  • diarrhea.

What diuretic does not cause hypokalemia?

Medications called potassium-sparing diuretics don’t lower potassium levels. Examples include spironolactone (Aldactone), eplerenone (Inspra) and triamterene (Dyrenium).

Does metolazone cause hyponatremia?

Metolazone was strongly associated with hyponatremia, hypokalemia, and worsening renal function (P<0.0001 for all) with minimal effect attenuation following covariate and propensity adjustment.

Does Lasix cause hypokalemia?

As with many diuretics, it can cause dehydration and electrolyte imbalance, including loss of potassium, calcium, sodium, and magnesium. Excessive use of furosemide will most likely lead to a metabolic alkalosis due to hypochloremia and hypokalemia.

What are the bad side effects of eliquis?

  • Bleeding gums.
  • Chest pain or tightness.
  • Coughing up or vomiting blood or material that looks like coffee grounds.
  • Feeling dizzy or faint.
  • Headache.
  • Heavy vaginal bleeding.
  • Nosebleeds.
  • Rash.

What is the side effect of spironolactone?

Drowsiness, dizziness, lightheadedness, stomach upset, diarrhea, nausea, vomiting, or headache may occur. To minimize lightheadedness, get up slowly when rising from a seated or lying position. If any of these effects persist or worsen, notify your doctor or pharmacist promptly.

Why do you give metolazone before furosemide?

Even at low doses metolazone significantly potentiates the diuretic effects of furosemide and therefore simplifies the treatment of fluid retention. High doses of furosemide can be avoided in many cases, a factor of particular advantage in ambulatory long term therapy and in patients with decreased kidney function.

Article first time published on

Which diuretics can cause hyperkalemia?

Hyperkalemia. Potassium-sparing diuretics such as spironolactone, amiloride, and triamterene all have the potential to cause hyperkalemia.

How does spironolactone cause hyperkalemia?

The pump acts to re-absorb sodium and water in exchange for potassium, which is then eliminated in the urine. Consequently, aldosterone antagonism can cause hyperkalemia. Hyperkalemia is an established adverse effect of both spironolactone and eplerenone. The symptoms of hyperkalemia begin with muscle weakness.

What is the most common cause of hypokalemia?

Low potassium (hypokalemia) has many causes. The most common cause is excessive potassium loss in urine due to prescription medications that increase urination. Also known as water pills or diuretics, these types of medications are often prescribed for people who have high blood pressure or heart disease.

Why do loop diuretics cause hypocalcemia?

Thiazide diuretics can cause hypercalcemia while loop diuretics increase the excretion of calcium which can lead to hypocalcemia.

Can spironolactone cause hypokalemia?

Spironolactone is a diuretic that may be used to remove excess fluid (edema) from the body, lower blood pressure, or treat hyperaldosteronism. It does not cause potassium loss from the body; however, other electrolytes may become depleted.

Does HCTZ increase potassium?

By combining hydrochlorothiazide with triamterene, sodium and water are eliminated from the body without the loss of potassium. However, this drug may allow potassium levels to increase so potassium levels should be closely monitored.

How does furosemide affect potassium?

Furosemide is mainly used to treat hyperkalemia, which brings about its desired effect by removing the excess serum potassium through its action on loop of Henle. [23] This property of furosemide resulted in an increased urinary potassium levels in experimental rats.

Can bumetanide cause hypokalemia?

Metabolic side effects associated with bumetanide, as with other loop diuretics, occur in 7% to 20% of patients, and include hyponatremia, hypokalemia, hypochloremia, and hyperuricemia. These side effects may be more likely in patients with renal insufficiency.

How does furosemide cause hyponatremia?

In contrast, loop diuretics such as furosemide block the NaK2Cl cotransporter in the medullary loop of Henle, and therefore, both urinary concentration and diluting mechanisms are impaired. As previously mentioned, furosemide may cause hypotonic urine and is thus much less likely to cause hyponatremia.

Why does HCTZ cause hyponatremia?

(1) The propensity of thiazides to promote hyponatremia is explained by the inhibition of urinary dilution due to reduced reabsorption of NaCl in the distal renal tubules. In contrast, loop diuretics do not impair urinary dilution and are not associated with reduction of sodium levels.

Does Metolazone increase sodium?

Metolazone works by inhibiting sodium transport across the epithelium of the renal tubules (mostly in the distal tubules), resulting in a decrease in sodium reabsorption and an increase in sodium, chloride, and water excretion.

Does spironolactone cause hyponatremia?

Spironolactone, a potassium sparing diuretic, has also been implicated in the development of hyponatremia [10, 12]. A possibility that coadministration of a second diuretic with potassium sparing diuretic can either cause or aggravate hyponatremia has been reported [17, 18].

What side effects does estradiol have?

Stomach upset, nausea/vomiting, bloating, breast tenderness, headache, or weight changes may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.

Can spironolactone cause anemia?

muscle weakness or cramps. rapid weight loss. signs of anemia (low red blood cells; e.g., dizziness, pale skin, unusual tiredness or weakness, shortness of breath)

Why spironolactone and furosemide are prescribed together?

Furosemide only is a bad choice. Combination therapy is faster but more likely to have lab abnormalities that need to be monitored (azotemia, hyponatremia) Spironolactone first is slightly slower, but gentler in terms of side effects and works just as well as combination therapy.

What drugs should you not take with eliquis?

Some products that may interact with this drug include: mifepristone, other drugs that can cause bleeding/bruising (including antiplatelet drugs such as clopidogrel, “blood thinners” such as warfarin, enoxaparin), certain antidepressants (including SSRIs such as fluoxetine, SNRIs such as desvenlafaxine/venlafaxine).

Can eliquis cause anemia?

The most frequent side effects with Eliquis (seen in between 1 and 10 patients in 100) are anaemia (low red blood cell counts), haemorrhage (bleeding), haematoma (a collection of blood under the skin), contusion (bruising), nausea (feeling sick), low blood pressure (hypotension), epistaxis (nose bleeds), haematuria ( …

What supplements to avoid while on eliquis?

OTC agents such as Chinese herbs, ginger, gingko biloba, herbal teas and turmeric can all potentially increase bleeding risk when combined with apixaban. Medications such as St. John’s wort may decrease the effectiveness of apixaban.

Can you take metolazone and furosemide together?

Before taking furosemide, tell your doctor if you also use metOLazone. You may need dose adjustments or special tests in order to safely take both medications together. This combination may lower levels of certain minerals in your body such as potassium, magnesium, and sodium.

Is metolazone contraindicated in renal failure?

Metolazone should be used cautiously in patients with severe renal disease including severe renal impairment or renal failure. Hypovolemia can precipitate azotemia in these patients. Therapy should be interrupted or discontinued if renal impairment or azotemia worsens.

Why is metolazone given before Bumex?

Due to its delayed absorption, some clinicians suggest that metolazone be given 30-60 minutes prior to the loop diuretic.