---
title: "Synthroid side effects: common vs serious risks"
description: "Synthroid side effects often reflect too much thyroid hormone, like palpitations or anxiety. Know common vs serious signs and when to call a clinician."
canonical: "https://www.vitalsvault.com/treatment-learn/synthroid-side-effects"
last-updated: 2026-08-22
---

# Synthroid side effects: common vs serious risks

> Synthroid side effects often reflect too much thyroid hormone, like palpitations or anxiety. Know common vs serious signs and when to call a clinician.

---

Canonical HTML: https://www.vitalsvault.com/treatment-learn/synthroid-side-effects
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