Amiloride hydrochloride

Last updated on RxList: 7/7/2021
Amiloride hydrochloride Side Effects Center

Medical Editor: John P. Cunha, DO, FACOEP

What Is Amiloride Hydrochloride?

Amiloride hydrochloride is a diuretic (water pill) used to treat congestive heart failure, high blood pressure (hypertension), and other conditions such as low potassium levels in the blood (hypokalemia).

What Are Side Effects of Amiloride Hydrochloride?

Common side effects of amiloride hydrochloride include:

Dosage for Amiloride Hydrochloride

The recommended dosage of Amiloride Hydrochloride is one 5 mg tablet daily. The dosage may be increased to 10 mg per day, if necessary. Amiloride Hydrochloride may cause high potassium levels in the blood (hyperkalemia).

What Drugs, Substances, or Supplements Interact with Amiloride Hydrochloride?

Amiloride Hydrochloride may interact with tacrolimus, cyclosporine, lithium, nonsteroidal anti-inflammatory drugs (NSAIDs), or other diuretics. Tell your doctor all medications you use.

Amiloride Hydrochloride During Pregnancy or Breastfeeding

Amiloride should be used during pregnancy only if clearly needed. Consult your doctor before using Amiloride Hydrochloride if you are breastfeeding.

Additional Information

Our Amiloride Hydrochloride Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.


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Amiloride hydrochloride Consumer Information

Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Stop taking amiloride and call your doctor at once if you have:

  • increased thirst, decreased urination;
  • heavy sweating, or hot and dry skin;
  • tremors, confusion, loss of consciousness;
  • jaundice (yellowing of the skin or eyes);
  • high potassium--tiredness, numbness or tingling, slow or unusual heart rate, muscle weakness or limp feeling; or
  • low levels of sodium in the body--headache, confusion, slurred speech, severe weakness, vomiting, loss of coordination, feeling unsteady.

Common side effects may include:

  • nausea, stomach pain, gas, loss of appetite;
  • headache; or
  • rash.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Read the entire detailed patient monograph for Amiloride hydrochloride (Amiloride Hydrochloride)


Salt and sodium are the same. See Answer
Amiloride hydrochloride Professional Information


Amiloride HCl is usually well tolerated and, except for hyperkalemia (serum potassium levels greater than 5.5 mEq liter - see WARNINGS), significant adverse effects have been reported infrequently. Minor adverse reactions were reported relatively frequently (about 20%) but the relationship of many of the reports to amiloride HCl is uncertain and the overall frequency was similar in hydrochlorothiazide treated groups. Nausea/anorexia, abdominal pain, flatulence, and mild skin rash have been reported and probably are related to amiloride. Other adverse experiences that have been reported with amiloride are generally those known to be associated with diuresis, or with the underlying disease being treated.

The adverse reactions for amiloride HCl listed in the following table have been arranged into two groups: (1) incidence greater than one percent; and (2) incidence one percent or less. The incidence for group (1) was determined from clinical studies conducted in the United States (837 patients treated with amiloride HCl). The adverse effects listed in group (2) include reports from the same clinical studies and voluntary reports since marketing. The probability of a causal relationship exists between amiloride HCl and these adverse reactions, some of which have been reported only rarely.

Incidence > 1% Incidence ≤ 1%
Body as a Whole
  Headache* Back pain
  Weakness Chest pain
  Fatigability Neck/shoulder ache
Pain, extremities
  None Angina pectoris
Orthostatic hypotension
  Nausea/anorexia* Jaundice
  Diarrhea* GI bleeding
  Vomiting* Abdominal fullness
  Abdominal pain GI disturbance
  Gas pain Thirst
  Appetite changes Heartburn
  Constipation Flatulence
   Elevated serum potassium levels ( > 5.5 mEq per liter)** None
  None Skin rash
Dryness of mouth
  Muscle cramps Joint pain
Leg ache
  Dizziness Paresthesia
  Encephalopathy Tremors
  None Nervousness
Mental confusion
Decreased libido
  Cough Shortness of breath
Special Senses
  None Visual disturbances
Nasal congestion
Increased intraocular pressure
  Impotence Polyuria
Urinary frequency
Bladder spasms
*Reactions occurring in 3% to 8% of patients treated with amiloride HCl. (Those reactions occurring in less than 3% of the patients are unmarked.)

Causal Relationship Unknown

Other reactions have been reported but occurred under circumstances where a causal relationship could not be established. However, in these rarely reported events, that possibility cannot be excluded. Therefore, these observations are listed to serve as alerting information to physicians.

Activation of probable pre-existing peptic ulcer
Aplastic anemia
Abnormal liver function

Read the entire FDA prescribing information for Amiloride hydrochloride (Amiloride Hydrochloride)

© Amiloride hydrochloride Patient Information is supplied by Cerner Multum, Inc. and Amiloride hydrochloride Consumer information is supplied by First Databank, Inc., used under license and subject to their respective copyrights.

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