Overview
The patch formulation reduces stomach side effects and simplifies dosing for people who resist pills.
Practical points
- Patch is applied once daily and rotated between sites
- Approved for Alzheimer's disease and Parkinson's disease dementia
- Often used in Lewy body dementia
Common side effects
- Nausea and vomiting, more with capsules
- Skin irritation at the patch site
- Appetite and weight loss
Cautions
- Never apply more than one patch at a time
- Remove the old patch before applying a new one
Medically reviewed. Last reviewed August 2026. This page is educational information, not individualized medical advice.