Question 1

What routes can Propylthiouracil be administered by?

Accepted Answer

Available routes: PO.

Question 2

Is Propylthiouracil a controlled substance?

Accepted Answer

Propylthiouracil is not federally scheduled in the US. Controlled-drug status differs by country — verify your local rules.

Question 3

What are the warnings or contraindications for Propylthiouracil?

Accepted Answer

Higher hepatotoxicity and immune-mediated reactions than methimazole. Not recommended in cats — methimazole preferred. Monitor CBC and liver function.

Question 4

What are the side effects of Propylthiouracil?

Accepted Answer

Reported side effects, adverse reactions, and contraindications for Propylthiouracil: Higher hepatotoxicity and immune-mediated reactions than methimazole. Not recommended in cats — methimazole preferred. Monitor CBC and liver function.

Question 5

How does Propylthiouracil work?

Accepted Answer

Inhibits thyroid peroxidase-mediated iodination and coupling reactions, and at high doses inhibits peripheral T4 to T3 conversion.

Propylthiouracil

Drug Class

Routes

Mechanism of Action

Side effects & warnings

Upgrade for Full Details