A Study to Evaluate the Effect of Heat Application on the Delivery Profile of Corplex™ Donepezil Transdermal Delivery System (TDS)

2-Way Crossover study

Approximately 24 healthy, adult male and female subjects will be enrolled.

Subjects will be randomized to 1 of 2 treatment sequences prior to the first TDS application
in treatment period 1.

For each treatment period, subjects will have one 7-day TDS applied on their back. Depending
on which sequence a subject is randomized to, the healthy subject will either be exposed to
heat or not during the TDS wear time.

Blood samples for Donepezil PK will be collected pre-dose until the end of each treatment
period.

Adhesion will be monitored throughout the TDS wear time, and skin irritation will be
monitored after TDS removal.

Subjects who complete the 2-way crossover study may be eligible to participate in the
optional Study Extension Period. In the Study Extension Period, subjects will have their skin
surface temperature monitored under the patch and adjacent to the TDS.

Blood samples for Donepezil PK will not be collected, and adhesion will not be monitored for
the Study Extension TDS wear period.

Safety will be monitored throughout the study by adverse event reporting and repeated
clinical and laboratory evaluations.

Inclusion Criteria:

- Healthy, adult, male or female ≥ 30 years of age

Exclusion Criteria:

- History of any illness that, in the opinion of the investigator, might confound the
results of the study or poses an additional risk to the subject by participation in
the study

- History or presence of alcoholism or drug abuse within the past 2 years prior to the
first study product treatment

- History or presence of hypersensitivity or idiosyncratic reaction to the study
products or related compounds

- History of significant multiple and/or severe allergies, or has had an anaphylactic
reaction or significant intolerability to prescription or nonprescription drugs

- History or presence of excessive sweating

- History or presence of hairy skin on application sites

- History or presence of significant skin damage or disease at application sites

- Any medical or surgical procedure or trauma within 28 days prior to the first study
product treatment