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Medication guide

Hydrochlorothiazide: uses, appearance and warnings

What the official FDA label says Hydrochlorothiazide is used for, what it looks like, and its most important warnings — in plain English, with the label text one click away.
Thiazide DiureticPrescription label

Uses

What the official label says Hydrochlorothiazide is used for

The FDA label for Hydrochlorothiazide states:

Hydrochlorothiazide tablets USP are indicated as adjunctive therapy in edema associated with congestive heart failure, hepatic cirrhosis, and corticosteroid and estrogen therapy. Hydrochlorothiazide tablets USP have also been found useful in edema due to various forms of renal dysfunction such as nephrotic syndrome, acute glomerulonephritis, and chronic renal failure. Hydrochlorothiazide tablets USP are indicated in the management of hypertension either as the sole therapeutic agent or to enhance the effectiveness of other antihypertensive drugs in the more severe forms of hypertension. …
Read the label's “Indications and usage” section (verbatim)
Hydrochlorothiazide tablets USP are indicated as adjunctive therapy in edema associated with congestive heart failure, hepatic cirrhosis, and corticosteroid and estrogen therapy. Hydrochlorothiazide tablets USP have also been found useful in edema due to various forms of renal dysfunction such as nephrotic syndrome, acute glomerulonephritis, and chronic renal failure. Hydrochlorothiazide tablets USP are indicated in the management of hypertension either as the sole therapeutic agent or to enhance the effectiveness of other antihypertensive drugs in the more severe forms of hypertension. Use in pregnancy Routine use of diuretics during normal pregnancy is inappropriate and exposes mother and fetus to unnecessary hazard. Diuretics do not prevent development of toxemia of pregnancy and there is no satisfactory evidence that they are useful in the treatment of toxemia. Edema during pregnancy may arise from pathologic causes or from the physiologic and mechanical consequences of pregnancy. Thiazides are indicated in pregnancy when edema is due to pathologic causes, just as they are in the absence of pregnancy (see PRECAUTIONS, Pregnancy ). Dependent edema in pregnancy, resulting from restriction of venous return by the gravid uterus, is properly treated through elevation of the lower extremities and use of support stockings. Use of diuretics to lower intravascular volume in this instance is illogical and unnecessary. During normal pregnancy there is hypervolemia which is not harmful to the fetus or the mother in the absence of cardiovascular disease. However, it may be associated with edema, rarely generalized edema. If such edema causes discomfort, increased recumbency will often provide relief. Rarely this edema may cause extreme discomfort which is not relieved by rest. In these instances, a short course of diuretic therapy may provide relief and be appropriate.

Names & forms

Brand names, forms and strengths

Brand names (from RxNorm; not every brand is still sold): Inzirqo.

Generic name: hydrochlorothiazide · RxNorm ID (RxCUI): 5487

Forms and strengths of Hydrochlorothiazide listed in RxNorm
FormStrengths listed in RxNorm
Oral Capsule12.5 MG
Oral Tablet12.5 MG, 25 MG, 50 MG
Powder for Oral Suspension800 MG

Strengths are listed so you can recognise a product — not as dosing information. Only your prescriber can decide what is right for you.

Appearance

What Hydrochlorothiazide looks like

Illustration: PEACH round tablet, imprint EP 155EP 155

hydrochlorothiazide 12.5 mg
Leading Pharma, LLC

Illustration: PEACH round tablet, imprint EP 131EP 131

hydrochlorothiazide 25 mg
Leading Pharma, LLC

Illustration: PEACH round tablet, imprint EP 130EP 130

hydrochlorothiazide 50 mg
Leading Pharma, LLC

Illustration: light orange to peach colored round tablet, imprint H 2H 2

hydrochlorothiazide 25 mg
Accord Healthcare Inc.

Illustration: light orange to peach colored round tablet, imprint H 1H 1

hydrochlorothiazide 12.5 mg
Accord Healthcare Inc.

Illustration: light orange to peach colored round tablet, imprint H 3H 3

hydrochlorothiazide 50 mg
Accord Healthcare Inc.

Illustration based on label data — not a photo; appearance varies by manufacturer. Confirm with your pharmacist.
Appearance of Hydrochlorothiazide products from DailyMed product data
StrengthFormColourShapeSizeImprintScoreLabeler
hydrochlorothiazide 12.5 mgtabletyellow“PEACH”round6 mmEP · 1551Leading Pharma, LLC
hydrochlorothiazide 25 mgtabletyellow“PEACH”round6 mmEP · 1312Leading Pharma, LLC
hydrochlorothiazide 50 mgtabletyellow“PEACH”round8 mmEP · 1302Leading Pharma, LLC
hydrochlorothiazide 25 mgtabletorange“light orange to peach colored”round6 mmH · 22Accord Healthcare Inc.
hydrochlorothiazide 12.5 mgtabletorange“light orange to peach colored”round5 mmH · 11Accord Healthcare Inc.
hydrochlorothiazide 50 mgtabletorange“light orange to peach colored”round8 mmH · 32Accord Healthcare Inc.
hydrochlorothiazide 25 mgtabletorange“Peach”round6 mm361 · O2REMEDYREPACK INC.
hydrochlorothiazide 25 mgtabletorange“light orange”round6 mmTEVA · 20832Redpharm Drug

From the product data in each manufacturer's label on DailyMed. Many companies make Hydrochlorothiazide, so your medicine may look different from any shown here. If a pill looks unfamiliar, ask your pharmacist before taking it.

Read the label's “How supplied” section (verbatim)
Hydrochlorothiazide tablets USP, 12.5 mg are available as peach color, round, flat face, beveled edge tablets, debossed “EP” above and “155” below on one side, and plain on the other side containing 12.5 mg of hydrochlorothiazide USP, packaged in bottles of 100 (NDC 69315-155-01) and 1000 (NDC 69315-155-10) tablets. Hydrochlorothiazide tablets USP, 25 mg are available as peach color, round, flat face, beveled edge bisected tablets, debossed "EP" above bisect and "131" below bisect on one side and plain on the other side containing 25 mg of hydrochlorothioazide USP, packaged in bottles of 100 (NDC 69315-131-01), 1000 (NDC 69315-131-10) and 5000 (NDC 69315-131-50) tablets. Hydrochlorothiazide tablets USP, 50 mg are available as peach color, round, flat face, beveled edge, bisected tablets, debossed "EP" above bisect and "130" below bisect on one side and plain on the other side containing 50 mg of hydrochlorothiazide USP, packaged in bottles of 100 (NDC 69315-130-01) and 1000 (NDC 69315-130-10) tablets. Dispense in a well-closed container as defined in the USP, with a child-resistant closure (as required). Store at 20° to 25°C (68° to 77°F) [See USP Controlled Room Temperature]. KEEP THIS AND ALL MEDICATIONS OUT OF THE REACH OF CHILDREN. Manufactured by: Leading Pharma, LLC Fairfield, NJ 07004 Rev.07 01/26

Safety

Important warnings for Hydrochlorothiazide

Use with caution in severe renal disease. In patients with renal disease, thiazides may precipitate azotemia. Cumulative effects of the drug may develop in patients with impaired renal function. Thiazides should be used with caution in patients with impaired hepatic function or progressive liver disease, since minor alterations of fluid and electrolyte balance may precipitate hepatic coma. Thiazides may add to or potentiate the action of other antihypertensive drugs. …

Contraindications — who should not use it (verbatim)
Anuria. Hypersensitivity to this product or to other sulfonamide-derived drugs.
Warnings and precautions (verbatim excerpt)
Use with caution in severe renal disease. In patients with renal disease, thiazides may precipitate azotemia. Cumulative effects of the drug may develop in patients with impaired renal function. Thiazides should be used with caution in patients with impaired hepatic function or progressive liver disease, since minor alterations of fluid and electrolyte balance may precipitate hepatic coma. Thiazides may add to or potentiate the action of other antihypertensive drugs. Sensitivity reactions may occur in patients with or without a history of allergy or bronchial asthma. The possibility of exacerbation or activation of systemic lupus erythematosus has been reported. Lithium generally should not be given with diuretics (see PRECAUTIONS, Drug Interactions ). Acute Myopia and Secondary Angle-Closure Glaucoma Hydrochlorothiazide, a sulfonamide, can cause an idiosyncratic reaction, resulting in acute transient myopia and acute angle-closure glaucoma. Symptoms include acute onset of decreased visual acuity or ocular pain and typically occur within hours to weeks of drug initiation., Untreated acute angle-closure glaucoma can lead to permanent vision loss. The primary treatment is to discontinue hydrochlorothiazide as rapidly as possible. Prompt medical or surgical treatments may need to be considered if the intraocular pressure remains uncontrolled. Risk factors for developing acute angle-closure glaucoma may include a history of sulfonamide or penicillin allergy.
Side effects — opening of the label's adverse reactions section
The following adverse reactions have been reported and, within each category, are listed in order of decreasing severity. Body as a Whole Weakness. Cardiovascular Hypotension including orthostatic hypotension (may be aggravated by alcohol, barbiturates, narcotics or antihypertensive drugs). Digestive Pancreatitis, jaundice (intrahepatic cholestatic jaundice), diarrhea, vomiting, sialadenitis, cramping, constipation, gastric irritation, nausea, anorexia. Hematologic Aplastic anemia, agranulocytosis, leucopenia, hemolytic anemia, thrombocytopenia. Hypersensitivity Anaphylactic reactions, necrotizing angiitis (vasculitis and cutaneous vasculitis), respiratory distress including pneumonitis and pulmonary edema, photosensitivity, fever, urticaria, rash, purpura. Metabolic Electrolyte imbalance (see PRECAUTIONS ), hyperglycemia, glycosuria, hyperuricemia Musculoskeletal Muscle spasm. …

This is not a complete list of warnings or side effects. Read the full label and talk to your prescriber or pharmacist. To report a side effect to the FDA, use MedWatch.

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Sources

Label text is quoted from the Leading Pharma, LLC label (label version effective June 12, 2026), retrieved October 20, 2026. Other manufacturers' labels for the same medicine may differ in wording.

If anything here differs from the label that came with your medicine, follow your label and your pharmacist.

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