58 81 Pill — WHITE OVAL, 11mm — Spironolactone
| Imprint | 58 / 81 |
|---|---|
| Colour | WHITE |
| Shape | OVAL |
| Size | 11 |
| Strength | SPIRONOLACTONE 50 mg |
| Dosage form | Tablet, Film Coated |
| Manufacturer | Aidarex Pharmaceuticals LLC |
| NDC | 33261-895 |
| Schedule | — |
| Availability | — |
| Ingredients | SPIRONOLACTONE[SPIRONOLACTONE] |
What does this imprint mean?
The imprint "58 81" 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
Spironolactone
Uses and warnings
No boxed warning. Contraindications include hyperkalemia, Addison's disease, and concomitant use with eplerenone. Key warnings include hyperkalemia, which can be serious or fatal, requiring potassium monitoring "within the first week" of therapy and periodically thereafter, especially with ACE inhibitors, ARBs, or potassium supplements; risk of hypotension and acute worsening of renal function; electrolyte disturbances such as hyponatremia; and tumorigenicity noted in chronic animal toxicity studies.
Spironolactone is indicated for management of NYHA Class III-IV heart failure with reduced ejection fraction, to increase survival and manage edema, generally combined with other heart-failure therapies; management of hypertension as add-on therapy when other agents are inadequate; management of edema in cirrhosis of the liver when fluid/sodium restriction alone is ineffective; treatment of edema of nephrotic syndrome when other therapies are inadequate; and short-term preoperative treatment or long-term maintenance therapy for primary hyperaldosteronism.
How to identify this pill
- • Check the imprint matches exactly: "58 81".
- • Confirm the colour (WHITE) and shape (OVAL).
- • Compare the size (11) against a ruler if possible.
- • When in doubt, confirm with a pharmacist before taking any medication.
Similar-looking pills
APO 101
WHITE OVAL · Paroxetine
4 NO
WHITE OVAL · Ondansetron
H 104
WHITE OVAL · Metformin
FN2
WHITE OVAL · Fenofibrate
L0R1 2
WHITE OVAL · Loperamide
M2A4 57344
WHITE OVAL · Acetaminophen
S G
WHITE OVAL · Pramipexole
Apotex 5306
WHITE OVAL · Acyclovir
G 13
WHITE OVAL · Gabapentin
AP 117
WHITE OVAL · Meclizine
IG 257
WHITE OVAL · Nabumetone
ZC46
WHITE OVAL · Pravastatin
Other pills of Spironolactone
M 146
WHITE ROUND · Spironolactone
5880 V
WHITE ROUND · Spironolactone
661
WHITE OVAL · Spironolactone
AN 514
YELLOW ROUND · Spironolactone
R 672
WHITE OVAL · Spironolactone
AN 511
WHITE ROUND · Spironolactone
AF
ORANGE ROUND · Spironolactone
5880 V
WHITE ROUND · Spironolactone
MP 542
WHITE ROUND · Spironolactone
M 243
WHITE ROUND · Spironolactone
SEARLE 1001
YELLOW ROUND · Spironolactone
MP 303
WHITE OVAL · Spironolactone
Official references
Source: FDA Structured Product Label via NLM Pillbox archive (retired 2021); source file b82a7117-a881-4efb-a22a-69842616fbb5.xml