A member asked:

How long does it take for levothyroxin to take effect?

A doctor has provided 1 answer

A few days.: Most of the time the medication starts to work within a few days. However it frequently takes several weeks before you will see or feel and effect. It frequently depends on what the original levels were before the medication was started. Aalk to your doctor if you're concerned about this.

Answered 3/27/2014

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