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Propylthiouracil (PTU) — NCLEX Cheat Sheet

Hyperthyroid; safer 1st trimester
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👤 By the CinnaRN Clinical Content Team 🕐 Updated 2026-07-11 🏷️ Pharmacological Therapies 🔖 Free to read, print, and share
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Use this quick-reference guide to spot, treat, and prevent Propylthiouracil (PTU) on the NCLEX. Keep it handy during review and on exam day!

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Quick Tip

Inhibits thyroid hormone synthesis and blocks peripheral conversion of T4 to T3, making it useful in thyroid storm.

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