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Triamterene

Triamterene Side Effects

Robert Chad Hakim, PharmD, BCCCPAllison Gourley, PharmD
Reviewed by Robert Chad Hakim, PharmD, BCCCP, Allison Gourley, PharmD
Last reviewed on January 9, 2025

The following side effects may get better over time as your body gets used to the medication. Let your healthcare provider know immediately if you continue to experience these symptoms or if they worsen over time.

Common Side Effects

See "Other Side Effects."

Less Common Side Effects

Triamterene serious side effects

Contact your healthcare provider immediately if you experience any of the following.

  • High potassium levels: nausea, vomiting, muscle weakness, tiredness, tingling or numbness, irregular heartbeat

Source: DailyMed

The following Triamterene side effects have also been reported

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur:

Incidence not known

Abdominal or stomach pain

agitation

black, tarry stools

bleeding gums

blood in the urine or stools

chills

clay-colored stools

cloudy urine

confusion

convulsions

cough

dark urine

decreased urine output

depression

difficulty breathing

difficulty swallowing

dizziness

dry mouth

fainting spells

fast or irregular heartbeats

fever

headache

hives

hostility

increased thirst

irritability

itching

joint pain

lethargy

loss of appetite

loss of consciousness

mood changes

muscle pain or cramps

muscle twitching

nausea or vomiting

nervousness

numbness or tingling in the hands, feet, or lips

pain in the groin or genitals

pain in the lower back or side

pinpoint red spots on the skin

puffiness or swelling of the eyelids or around the eyes, face, lips or tongue

rapid or unusual weight gain

seizures

sharp back pain just below the ribs

shortness of breath

skin rash

stupor

swelling of the face, ankles, feet, or hands

tightness in the chest

unpleasant breath odor

unusual bleeding or bruising

unusual tiredness or weakness

vomiting of blood

weakness or heaviness of the legs

wheezing

yellow eyes or skin

Get emergency help immediately if any of the following symptoms of overdose occur:

Symptoms of overdose

Blurred vision

diarrhea

dizziness, faintness, or lightheadedness when getting up from a lying or sitting position suddenly

indigestion

pain or weakness in the hands or feet

passing of gas

stomach fullness or discomfort

sweating

trembling

Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

Incidence not known

Increased sensitivity of skin to sunlight

redness or other discoloration of the skin

severe sunburn

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

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