---
title: "Prometrium side effects: common vs serious"
description: "Prometrium side effects can include sleepiness, dizziness, breast tenderness, and headache. Know what is common, what is serious, with clinician guidance."
canonical: "https://www.vitalsvault.com/treatment-learn/prometrium-side-effects"
last-updated: 2026-08-22
---

# Prometrium side effects: common vs serious

> Prometrium side effects can include sleepiness, dizziness, breast tenderness, and headache. Know what is common, what is serious, with clinician guidance.

---

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