Hypothyroidism and Drugs

Question 1

What is the effect of Prednisone (anti-inflammatory) on thyroid hormones (TT4, TT3, fT4, TSH)?

Answer 1

TT4: unchanged or low
TT3: low
fT4: unchanged
TSH: unchanged

Question 2

What is the effect of Prednisone (immunosuppressive) on thyroid hormones (TT4, TT3, fT4, TSH)?

Answer 2

TT4: low
TT3: low
fT4: low
TSH: unchanged

Question 3

What is the effect of Dexamethasone (anti-inflammatory) on thyroid hormones (TT4, TT3, fT4, TSH)?

Answer 3

TT4: low
TT3: not studied
fT4: not ED
TSH: unchanged

Question 4

What is the effect of Dexamethasone (immunosuppressive) on thyroid hormones (TT4, TT3, fT4, TSH)?

Answer 4

TT4: unchanged
TT3: low
fT4: not studied
TSH: not studied

Question 5

What is the effect of phenobarbital (3 weeks, short term) on thyroid hormones (TT4, TT3, fT4, TSH)?

Answer 5

TT4: unchanged
TT3: not studied
fT4: unchanged
TSH: unchanged

Question 6

What is the effect of phenobarbital (long term) on thyroid hormones (TT4, TT3, fT4, TSH)?

Answer 6

TT4: low
TT3: unchanged
fT4: low or unchanged
TSH: high or unchanged

Question 7

What is the effect of KBr on thyroid hormones (TT4, TT3, fT4, TSH)?

Answer 7

TT4: unchanged
TT3: unchanged
fT4: unchanged
TSH: unchanged

Question 8

What is the effect of Zonisamide on thyroid hormones (TT4, TT3, fT4, TSH)?

Answer 8

TT4: unchanged
TT3: not studied
fT4: unchanged
TSH: unchanged

Question 9

What is the effect of Imepitonin on thyroid hormones (TT4, TT3, fT4, TSH)?

Answer 9

TT4: unchanged
TT3: unchanged
fT4: unchanged
TSH: unchanged

Question 10

What is the effect of Aspirin on thyroid hormones (TT4, TT3, fT4, TSH)?

Answer 10

TT4: low
TT3: low
fT4: low or unchanged
TSH: unchanged

Question 11

What is the effect of Carprofen on thyroid hormones (TT4, TT3, fT4, TSH)?

Answer 11

TT4: low or unchanged
TT3: not studied
fT4: unchanged
TSH: low or unchanged

Question 12

What is the effect of Sulfonamides (low dose, 3-4 weeks) on thyroid hormones (TT4, TT3, fT4, TSH)?

Answer 12

TT4: low or unchanged
TT3: unchanged
fT4: low or unchanged
TSH: increased

Question 13

What is the effect of Sulfonamides (high dose, 6 weeks) on thyroid hormones (TT4, TT3, fT4, TSH)?

Answer 13

TT4: low
TT3: unchanged
fT4: not studied
TSH: increased

Question 14

What is the effect of inhalant anesthetics on thyroid hormones (TT4, TT3, fT4, TSH)?

Answer 14

TT4: low
TT3: low or unchanged
fT4: increased or unchanged
TSH: unchanged

Question 15

What is the effect of propranolol on thyroid hormones (TT4, TT3, fT4, TSH)?

Answer 15

TT4: unchanged
TT3: unchanged
fT4: not studied
TSH: not studied

Question 16

What is the effect of Clomipramine on thyroid hormones (TT4, TT3, fT4, TSH)?

Answer 16

TT4: low
TT3: increased
fT4: low
TSH: unchanged

Question 17

What is the effect of Toceranib (Palladia) on thyroid hormones (TT4, TT3, fT4, TSH)?

Answer 17

TT4: unchanged
TT3: unchanged
fT4: low
TSH: increased

Question 18

What is the effect of Trilostane on thyroid hormones (TT4, TT3, fT4, TSH)?

Answer 18

TT4: unchanged
TT3: not studied
fT4: low
TSH: increased

Question 19

What is the effect of Amiodarone on thyroid hormones (TT4, TT3, fT4, TSH)?

Answer 19

TT4: increased or unchanged
TT3: unchanged
fT4: not studied
TSH: unchanged