This study aims to see if a dietary supplement, **citicoline**, can help improve sleep and memory in people with mild cognitive impairment (MCI). MCI is a condition where someone has more memory problems than normal for their age, but not severe enough to be dementia. The study will also check if citicoline affects markers of Alzheimer's disease (AD), like certain proteins in the blood or brain.

The study is **randomized and double-blind**, meaning neither the participants nor the researchers will know who is taking citicoline and who is taking a placebo (a harmless pill that looks like the real thing). Participants will be recruited, especially those 60 years or older with MCI and sleep issues. They should not be taking certain medications or have specific health problems.

• **Commitment**: Multiple visits may be required for interviews and blood tests.
• **Compensation**: Participation may offer some form of compensation.
• **Safety**: Citicoline is considered safe for people with MCI.

If you meet the criteria and are interested in helping researchers learn more about sleep and memory, consider joining this study. Always discuss with your doctor before participating in any study.