Central Nervous System: Weakness, fatigue, dizziness, headache, dry mouth.

Is fatigue a side effect of hydrochlorothiazide?

Corticosteroids. Hydrochlorothiazide can lower your electrolyte levels. Taking corticosteroids with hydrochlorothiazide can cause further loss of electrolytes (especially potassium). Low potassium levels can lead to constipation, fatigue, muscle breakdown, and weakness.

Does triamterene cause fatigue?

Dizziness, lightheadedness, tiredness, headache, stomach upset, or diarrhea may occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly.