---
title: Progesterone 100 mg capsule side effects guide
description: "Progesterone 100 mg capsule side effects can include sleepiness, dizziness, and breast tenderness. Know common vs serious risks and when to call clinician."
canonical: "https://www.vitalsvault.com/treatment-learn/progesterone-capsule-side-effects"
last-updated: 2026-08-22
---

# Progesterone 100 mg capsule side effects guide

> Progesterone 100 mg capsule side effects can include sleepiness, dizziness, and breast tenderness. Know common vs serious risks and when to call clinician.

---

Canonical HTML: https://www.vitalsvault.com/treatment-learn/progesterone-capsule-side-effects
- [llms.txt](https://www.vitalsvault.com/llms.txt)
- [sitemap.xml](https://www.vitalsvault.com/sitemap.xml)
- [Developer portal](https://www.vitalsvault.com/developers)