FormWeb • levothyroxine

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levothyroxine

levothyroxine

Brand names: Levothroid, Levoxyl, Synthroid

Form	Strength
POWDER FOR INJECTION, INTRAVENOUS	100 mcg (0.1 mg)
TABLET, ORAL	25 mcg; 50 mcg; 75 mcg; 88 mcg; 100 mcg; 112 mcg; 125 mcg; 150 mcg; 175 mcg; 200 mcg;

Display Thyroid Agents Class: 683604

Medication comments:

When changing from PO to IV therapy, the IV levothyroxine dose should be 50% of the PO dose.

Per policy, orders for these non-formulary agents will be changed to formulary equivalents.
Non-Formulary Agent	Formulary Equivalent
levothyroxine (Levoxyl, Levothroid)	levothyroxine (Synthroid)

Per policy, these drugs may be converted from IV to PO in patients who meet criteria.
levothyroxine (Synthroid)	may convert from IV to PO at twice the IV dose.

Enteral Drug Administration notes.
Generic (Brand)	Comments and Considerations	Recommendations for Administration with Enteral Nutrition
levothyroxine (Synthroid)	Decreased levels due to binding to feeding tubes.	For < 7days, no adjustment needed. For > 7 days, Consider holding tube feeding 1 hours before and after dose. Monitor TSH weekly

Last updated: Apr. 17, 2024

IV to PO Conversion Policy Policy
Black Box Warnings Treatment of obesity or weight loss
Look-Alike/Sound-Alike levothyroxine confused with lamoTRIgine, Lanoxin, liothyronine

UpToDate Lexidrug

Pharmacy Contact Info:

Main Inpatient Pharmacy: ext 4599, 3503
Fax: 704-878-7283

Director of Pharmacy - Randi Raynor, PharmD: ext 4501
Clinical Coordinator - Laura Rollings, PharmD: ext 4597
Pharmacy Informaticist - Stephen Pringle, PharmD: ext 7645
Pharmacy Technician Supervisor - Amy Wingler, CPhT: ext 7385
Pharmacy Automation Coordinator (Omnicell) - Melissa Fulford, CPhT: ext 3556

This site is intended for the staff of Iredell Health System. While others may view accessible pages, Iredell Health System makes no warranty, express or implied, as to the use of this information outside of Iredell Health System. The content of this policy and procedure document serves as guidance to the delivery of quality patient care. Care providers are expected to exercise critical thinking and situational awareness skills, and in specific situations to take such action as is necessary for the delivery of quality patient care.