Side Effects, Health Benefits, and Health Risks

Side Effects (see Managing Any Problems)

Some users report the following:

• Changes in bleeding patterns including:
  • Slight irregular bleeding for 1–2 days after taking ECPs
  • Monthly bleeding that starts earlier or later than expected

In the week after taking ECPs:

• Nausea^‡
• Abdominal pain
• Fatigue
• Headaches
• Breast tenderness
• Dizziness
• Vomiting^‡

^‡Women using progestin-only ECP formulations are much less likely to experience nausea and vomiting than women using estrogen and progestin ECP formulations.

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