Verbatim response from Perplexity
In general, the patch is considered safer than the pill for many people, mainly because it avoids first-pass metabolism through the liver and appears to have a lower risk of blood clots. Both forms are effective for menopause symptoms, but the patch is often preferred when clot risk matters most.[2][4][5][6]
- Blood clots: Oral estrogen is associated with a higher clot risk than transdermal estrogen in multiple sources, while patches/other skin-absorbed forms show lower or no increased clot risk in some studies.[1][4][5][6]
- Steadier hormone levels: Patches provide more stable estrogen levels, which may reduce side effects related to peaks and dips.[2]
- Liver effects: Pills pass through the liver first, which can affect inflammation and triglycerides more than patches do.[1][2][4]
- Symptom relief: Patches and pills are generally similarly effective for relieving menopause symptoms.[2][6]
Who especially tends to favor the patch: people who smoke, are older, overweight, or have higher baseline clot risk; some clinicians also avoid oral estrogen in people with liver problems because of the liver first-pass effect.[3][4]
Important nuance: the overall serious-risk increase from estrogen is still low for most users, and evidence is strongest for a lower clot risk with the patch; for other outcomes, studies are more mixed.[2][6][7]
If you want, I can also compare patch vs pill by side effects, cost, convenience, and who should avoid each one.