Select a medication above to begin.
Cytomel
liothyronine
Black Box Warnings .
Not for Obesity/Weight Loss
not for obesity/weight loss alone or as combo tx; in euthyroid pts doses within range of daily hormonal requirements ineffective for weight loss; larger doses may cause serious or life-threatening toxicity, especially given in combo w/ sympathomimetic amines incl. those w/ anorectic effects
Adult Dosing .
Dosage forms: TAB: 5 mcg, 25 mcg, 50 mcg
Special Note
- [thyroid product equivalencies]
- Info: for product conversion purposes, 25 mcg liothyronine = 100 mcg levothyroxine = 60-65 mg thyroid (porcine) = 1 grain liotrix
hypothyroidism
- [25-75 mcg PO qd]
- Start: 25 mcg PO qd, incr. 12.5-25 mcg/day q1-2wk; Info: incr. 5 mcg/day q1-2wk in elderly pts
thyroid CA adjunct
- [individualize dose PO qd]
- Info: for pts w/ well-differentiated thyroid CA
thyroid suppression test
- [75-100 mcg PO qd x7 days]
- Info: check radioactive iodine uptake pre- and post-tx; >50% suppression of uptake = normal
depression, adjunct tx (off-label)
- [25-50 mcg PO qd]
renal dosing
- [see below]
- renal impairment: not defined, caution advised
- HD/PD: not defined
hepatic dosing
- [not defined]
Peds Dosing .
- Dosage forms: TAB: 5 mcg, 25 mcg, 50 mcg
Special Note
- [thyroid product equivalencies]
- Info: for product conversion purposes, 25 mcg liothyronine = 100 mcg levothyroxine = 60-65 mg thyroid (porcine) = 1 grain liotrix
hypothyroidism
- [5-75 mcg PO qd]
- Start: 5 mcg PO qd, incr. by 5 mcg/day q3-4 days; Info: consider lower start dose in newborns w/ cardiac failure risk; start 25% full replacement dose, then incr. by 25% full replacement dose qwk if hyperactivity risk
renal dosing
- [see below]
- renal impairment: not defined, caution advised
- HD/PD: not defined
hepatic dosing
- [not defined]