A member asked:

How long before ptu (propylthiouracil) is effective against hyperthyroidism?

4 doctors weighed in across 2 answers

A while: 2 to 3 weeks but it also depends at what dose they started you on.

Answered 10/7/2017

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About2to 4 weeks: It starts working right away when started but full effect may take 2to4 weeks

Answered 3/8/2015

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