Levothyroxine
Brand names: LEVO-T, LEVOXYL, Levothyroxine Sodium, Levothyroxine sodium, Synthroid
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 ---
Uses
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. ---
Dosage forms & strengths
All identified pills
0 1
BROWN ROUND · Levothyroxine
2 manufacturers
0 2
BROWN ROUND · Levothyroxine
2 manufacturers
0 3
BROWN ROUND · Levothyroxine
2 manufacturers
0 4
BROWN ROUND · Levothyroxine
2 manufacturers
0 5
BROWN ROUND · Levothyroxine
2 manufacturers
0 6
BROWN ROUND · Levothyroxine
2 manufacturers
0 7
BROWN ROUND · Levothyroxine
2 manufacturers
0 8
BROWN ROUND · Levothyroxine
2 manufacturers
0 9
BROWN ROUND · Levothyroxine
0 10
BROWN ROUND · Levothyroxine
0 2
PINK OVAL · Levothyroxine
8 manufacturers
0 4
PINK OVAL · Levothyroxine
7 manufacturers
0 7
ORANGE OVAL · Levothyroxine
8 manufacturers
0 3
GREEN OVAL · Levothyroxine
8 manufacturers
0 5
WHITE OVAL · Levothyroxine
0 5
WHITE OVAL · Levothyroxine
7 manufacturers
0 1
YELLOW OVAL · Levothyroxine
8 manufacturers
0 8
BLUE OVAL · Levothyroxine
8 manufacturers
0 4
RED OVAL · Levothyroxine
0 1
BROWN OVAL · Levothyroxine
0 2
BROWN OVAL · Levothyroxine
0 3
BROWN OVAL · Levothyroxine
0 4
BROWN OVAL · Levothyroxine
0 5
BROWN OVAL · Levothyroxine
0 6
BROWN OVAL · Levothyroxine
0 7
BROWN OVAL · Levothyroxine
0 8
BROWN OVAL · Levothyroxine
0 6
PURPLE OVAL · Levothyroxine
8 manufacturers
1
BROWN ROUND · Levothyroxine
1
BROWN OVAL · Levothyroxine
2 manufacturers
1
BROWN OVAL · Levothyroxine
2 manufacturers
100 GG
YELLOW CAPSULE · Levothyroxine
21 manufacturers
100
YELLOW ROUND · Levothyroxine
100 GG
YELLOW OVAL · Levothyroxine
2 manufacturers
100 T4
YELLOW OVAL · Levothyroxine
3 manufacturers
100 GG
YELLOW BULLET · Levothyroxine
112 GG
PINK CAPSULE · Levothyroxine
2 manufacturers
112 GG
PINK CAPSULE · Levothyroxine
2 manufacturers
112 GG
RED CAPSULE · Levothyroxine
14 manufacturers
112
RED ROUND · Levothyroxine
112 T4
PINK OVAL · Levothyroxine
2 manufacturers
125 GG
BROWN CAPSULE · Levothyroxine
125 GG
BROWN CAPSULE · Levothyroxine
17 manufacturers
125
BROWN ROUND · Levothyroxine
125 T4
BROWN OVAL · Levothyroxine
3 manufacturers
125 GG
BROWN BULLET · Levothyroxine
3 manufacturers
137 GG
GREEN CAPSULE · Levothyroxine
4 manufacturers
137 T
BLUE CAPSULE · Levothyroxine
4 manufacturers
Side effects
Adverse reactions primarily result from "hyperthyroidism due to therapeutic overdosage" and include: - General: fatigue, weight loss, heat intolerance, fever, excessive sweating - CNS: headache, nervousness, anxiety, insomnia, tremors - Cardiovascular: palpitations, tachycardia, arrhythmias, angina, myocardial infarction - GI: diarrhea, vomiting, abdominal cramps - Other: muscle weakness, dyspnea, hair loss, menstrual irregularities In children: pseudotumor cerebri and slipped capital femoral epiphysis reported ---