S4 Pill — WHITE ROUND, 10mm — Captopril

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Imprint	S4
Colour	WHITE
Shape	ROUND
Size	10
Strength	CAPTOPRIL 100 mg
Dosage form	Tablet
Manufacturer	Sandoz Inc
NDC	0781-8080
Schedule	—
Availability	—
Ingredients	CAPTOPRIL[CAPTOPRIL]

What does this imprint mean?

The imprint "S4" is a code stamped or printed on the tablet or capsule by the manufacturer, used to identify the drug, its strength and the maker.

Active ingredient

Captopril

Uses and warnings

BOXED WARNING: Fetal Toxicity - "When pregnancy is detected, discontinue captopril tablets as soon as possible," since drugs acting on the renin-angiotensin system "can cause injury and death to the developing fetus." Other key warnings include angioedema of the head, neck, and extremities where "airway obstruction may occur and be fatal," intestinal angioedema, neutropenia/agranulocytosis risk (especially with renal impairment), symptomatic hypotension, and proteinuria/nephrotic syndrome.

Indicated for "treatment of hypertension," alone or with other agents; "treatment of congestive heart failure usually in combination with diuretics and digitalis"; to "improve survival following myocardial infarction" in clinically stable patients with left ventricular dysfunction; and "treatment of diabetic nephropathy (proteinuria greater than 500 mg/day)" in type I insulin-dependent diabetics with retinopathy.

Read the full drug profile →

How to identify this pill

• Check the imprint matches exactly: "S4".
• Confirm the colour (WHITE) and shape (ROUND).
• Compare the size (10) against a ruler if possible.
• When in doubt, confirm with a pharmacist before taking any medication.

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