AP 331 Pill — BROWN ROUND, 8mm — Levothyroxine
| Imprint | AP / 331 |
|---|---|
| Colour | BROWN |
| Shape | ROUND |
| Size | 8 |
| Strength | LEVOTHYROXINE 57 ug;LIOTHYRONINE 13.5 ug |
| Dosage form | Tablet |
| Manufacturer | Northwind Pharmaceuticals |
| NDC | 51655-124 |
| Schedule | — |
| Availability | — |
| Ingredients | LEVOTHYROXINE[LEVOTHYROXINE];LIOTHYRONINE[LIOTHYRONINE] |
What does this imprint mean?
The imprint "AP 331" 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
Levothyroxine
Uses and warnings
BOXED WARNING: "Thyroid hormones should not be used for the treatment of obesity or for weight loss. Larger doses may produce serious or even life threatening manifestations of toxicity." Major Warnings: - Cardiac risks: "Over-treatment may cause an increase in heart rate, cardiac wall thickness, and cardiac contractility and may precipitate angina or arrhythmias"—especially in elderly and cardiac disease patients - Myxedema coma: Do not use oral products; requires intravenous administration - Adrenal crisis: Treat adrenal insufficiency with glucocorticoids before initiating therapy - Narrow therapeutic index: Risk of adverse effects on growth, cardiac function, metabolism, and cognitive function from over/undertreatment - Diabetic control: May "worsen glycemic control and result in increased antidiabetic agent or insulin requirements" - Bone density: Over-replacement increases bone resorption ---
Levothyroxine sodium tablets are indicated for: - Hypothyroidism: "replacement therapy in primary (thyroidal), secondary (pituitary) and tertiary (hypothalamic) congenital or acquired hypothyroidism" - TSH Suppression: "as an adjunct to surgery and radioiodine therapy in the management of thyrotropin-dependent well-differentiated thyroid cancer" Limitations: Not for benign thyroid nodules/nontoxic goiter in iodine-sufficient patients or hypothyroidism during recovery from subacute thyroiditis. ---
How to identify this pill
- • Check the imprint matches exactly: "AP 331".
- • Confirm the colour (BROWN) and shape (ROUND).
- • Compare the size (8) against a ruler if possible.
- • When in doubt, confirm with a pharmacist before taking any medication.
Similar-looking pills
AN 2
BROWN ROUND · Phenazopyridine
67
BROWN ROUND · Estradiol
IBU200
BROWN ROUND · Ibuprofen
10
BROWN ROUND · Citalopram
AN 1
BROWN ROUND · Phenazopyridine
G2
BROWN ROUND · Ibuprofen
44 291
BROWN ROUND · Ibuprofen
L114 40
BROWN ROUND · Famotidine
IBU 200
BROWN ROUND · Ibuprofen
114
BROWN ROUND · Ibuprofen
M 530
BROWN ROUND · Mirtazapine
S 430
BROWN ROUND · Ranitidine
Other pills of Levothyroxine
SYNTHROID 150
BLUE ROUND · Levothyroxine
0 6
PURPLE OVAL · Levothyroxine
S
BROWN OVAL · Levothyroxine
M L
YELLOW OVAL · Levothyroxine
JSP 520
BLUE ROUND · Levothyroxine
SYNTHROID 100
YELLOW ROUND · Levothyroxine
JSP 520
BLUE ROUND · Levothyroxine
JSP 514
WHITE ROUND · Levothyroxine
125 GG
BROWN CAPSULE · Levothyroxine
JSP 561
GREEN ROUND · Levothyroxine
JSP 522
PINK ROUND · Levothyroxine
137 GG
TURQUOISE CAPSULE · Levothyroxine
Official references
Source: FDA Structured Product Label via NLM Pillbox archive (retired 2021); source file 54b002f1-1a91-46c8-b549-970d2f43c465.xml