section name header

Pronunciation

hye-droe-klor-oh-THYE-a-zide audio

Classifications

Therapeutic Classification: antihypertensives, diuretics

Pharmacologic Classification: thiazide diuretics

Indications

REMS

Action

Therapeutic Effects:

Pharmacokinetics

Absorption: Rapidly absorbed after oral administration.

Distribution: Distributed into extracellular space; crosses the placenta and enters breast milk.

Metabolism/Excretion: Excreted mainly unchanged by the kidneys.

Half-life: 6–15 hr.

Time/Action Profile

(diuretic effect)

ROUTEONSETPEAKDURATION
PO2 hr3–6 hr6–12 hr

†Onset of antihypertensive effect is 3–4 days and does not become maximal for 7–14 days of dosing.

Contraind./Precautions

Contraindicated in:

Use Cautiously in:

Adv. Reactions/Side Effects

CNS: dizziness, drowsiness, lethargy, weakness.

CV: hypotension.

Derm: SKIN CANCER (NON-MELANOMA), STEVENS JOHNSON SYNDROME, photosensitivity, rash.

EENT: acute angle-closure glaucoma, acute myopia.

Endo: hyperglycemia.

F and E: hypokalemia, dehydration, hypercalcemia, hypochloremic alkalosis, hypomagnesemia, hyponatremia, hypophosphatemia, hypovolemia.

GI: PANCREATITIS, anorexia, cramping, hepatitis, nausea, vomiting.

Hemat: blood dyscrasias.

Metab: hyperuricemia, hypercholesterolemia.

MS: muscle cramps.

Interactions

Drug-Drug:

Route/Dosage

see Calculator

When used as a diuretic in adults, generally given daily, but may be given every other day or 2–3 days/week

Availability

(Generic available)

Assessment

Lab Test Considerations:

Implementation

Patient/Family Teaching

Evaluation/Desired Outcomes

US Brand Names

Microzide

Canadian Brand Names

Urozide

Pill Image

hydrochlorothiazide_195_9228.jpg

Code

NDC Code*