Thyroid Medications Flashcards
generic name
synthetic thyroxine (T4)
levothyroxine
brand name
synthetic thyroxine (T4)
synthroid
indication
synthetic thyroxine (T4)
hypothyroidism
MOA
synthetic thyroxine (T4)
T4 is a synthetic form of thyroxine, an endogenous hormone secreted by the thyroid gland
contraindications
synthetic thyroxine (T4)
- Uncorrected adrenal insufficiency
- Thyrotoxicosis
- Benign thyroid nodules
- acute MI (myocardial infarction)
black box warnings
synthetic thyroxine (T4)
should not be used for weight reduction
common ADRs
synthetic thyroxine (T4)
- anxiety
- decreased appetite
- diarrhea
- insomnia
rare but serious ADRs
synthetic thyroxine (T4)
- Aggravation of pre-existing CV disease
- hyperthyroidism
key counseling points
synthetic thyroxine (T4)
- Take consistently on an empty stomach each day (with water and at least 30 min before food)
- Separate calcium and iron-containing products by at least 4 hours
brand name
dessicated thyroid
armour thyroid
generic name
dessicated thyroid
thyroid
indication
dessicated thyroid
hypothyroidism
MOA
dessicated thyroid
derived thyroid replacement containing both levothyroxine (T4) and liothyronine (T3)
contraindications
dessicatd thyroid
- Untreated thyrotoxicosis
- Uncorrected adrenal insufficiency
- Myxedema
black box warnings
dessicated thyroid
should not be used for weight reduction
common ADRs
dessicated thyroid
- hair loss
- diarrhea
- nausea/vomiting
- weight loss
rare but serious ADRs
dessicated thyroid
- Aggravation of pre-existing CV disease
- hyperthyroidism
key counseling points
dessicated thyroid
- Take consistently each day on an empty stomach (30 to 60 minutes prior to breakfast) to increase absorption
- Some desiccated thyroid products are acquired from porcine thyroid gland (pork)
generic name
antithyroid agents
potassium iodide
brand name
antithyroid agents
SSKI & ThyroShield
indication
antithyroid agents
hyperthyroidism
MOA
antithyroid agents
inhibits release of thyroid hormones via direct effect of thyroid gland
contraindications
antithyroid agents
nodular thyroid condition with heart disease
common ADRs
antithyroid agents
- GI upset
- diarrhea
- nausea/vomiting
- salivary gland swelling
rare but serious ADRs
antithyroid agents
- Hypersensitivity Reaction
- Hypothyroidism
- Thyroid
adenoma/Goiter
key counseling points
antithyroid agents
- Take with food to minimize GI upset
- Take with 4 oz of water. Other liquids can be used; dilution in chocolate milk can help mask the taste