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About Mary E Scott, RPh, CGP
Expertise
I am a certified geriatric pharmacist with over 23 years experience as a long-term care consultant to nursing homes. I also do community-based consulting on an individual basis. My facility-based monthly newsletter on pharmacy topics is read by nurses in over 200 long-term care facilities in 5 states.

Experience
I received a BS in Pharmacy in 1980 with post-graduate work in public health. I have had a Consultant Pharmacist license since 1984.

Organizations
American Society of Consultant Pharmacists
.I received certification in geriatric pharmacy in 1998.
 
   

You are here:  Experts > Health/Fitness > Pharmacology > Pharmacy > levothyroxine conversion

Topic: Pharmacy



Expert: Mary E Scott, RPh, CGP
Date: 4/8/2008
Subject: levothyroxine conversion

Question
I am a pharm tech and was asked this question on a test today:  15mg of levothyroxine is needed, you have only 100mcg,50mcg,and 25 mcg tablets on hand.  list 3 different ways of dispencing 1 dose of 15 mg

Answer
Hi,Shauna,
Are you sure you have the decimals in the right place?That seems like an awful lot of levothyroxine.
An average dose of levothyroxine is 0.15mg.  15mg would be ten times the dose.
Looking at the question, 150mcg is equal to 0.15mg.
If it is supposed to be 0.15mg,then you could use:

100mcg + 50mcg
100mcg + 2 tablets of 25mcg
2 tablets of 50mcg +2 tablets of 25mcg
Hope this helps, Mary
Good luck in your test!

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