Answer
Apply it to clean, dry, hairless, healthy skin on the upper or lower back, upper arm or chest, where tight clothing will not rub it.
Sources for this answer
- Alzest 13.3 mg/24 h Transdermal Patch — Current selected SmPCemc · Summary of Product Characteristics
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.