Is there any harm in taking too much progesterone during pregnancy?

Patient's question:

No

Doctor's answer:

The applicable population for progesterone only includes patients with threatened miscarriage and habitual abortion caused by luteal function insufficiency, not that progesterone is suitable for maintaining pregnancy throughout the entire pregnancy. The downsides of progesterone are that a few people may experience nausea, dizziness, headaches, fatigue, hives, and breast swelling. Long-term continuous use may also lead to abnormal liver function, edema, and weight gain. Therefore, it is not recommended for long-term use.