Dosing & Uses
Pregnancy: 220 mcg/day
Lactation: 290 mcg/day
1-8 years: 90 mcg/day
8-13 years: 120 mcg/day
13-18 years: 150 mcg/day
Serious - Use Alternative
Significant - Monitor Closely
Frequency Not Defined
Acne (high dose)
Hypersensitivity to drug or components
Excessive iodine may cause hypothyroidism by feedback inhibition of thyroid hormone production & conversion of triiodothyronine (T3) to less active thyroxine (T4)
Use caution in patients with renal impairment
Pregnancy & Lactation
Pregnancy Category: Not studied
Lactation: Enters breast milk; use caution
A:Generally acceptable. Controlled studies in pregnant women show no evidence of fetal risk.
B:May be acceptable. Either animal studies show no risk but human studies not available or animal studies showed minor risks and human studies done and showed no risk.
C:Use with caution if benefits outweigh risks. Animal studies show risk and human studies not available or neither animal nor human studies done.
D:Use in LIFE-THREATENING emergencies when no safer drug available. Positive evidence of human fetal risk.
X:Do not use in pregnancy. Risks involved outweigh potential benefits. Safer alternatives exist.
NA:Information not available.
Mechanism of Action
Required for thyroid hormone synthesis; component of thyroid hormones (T3 & T4)
Excretion: 90% (urine)