# Drugs and substances that may improve cognitive function Some drugs and substances have been studied to be helpful for memory and attention, but I should emphasize： 1. Most cognitive enhancement drugs are mainly used to treat specific diseases, and non-medical uses may be risky 2. The effect varies from person to person, and the level of scientific evidence varies 3. All medicines may have side effects ##Prescription drugs (only for use under the guidance of a doctor) -**Methylphenidate**(Ritalin): Prescription drug for ADHD -**Modafinil**: Used to treat specific sleep disorders -**Zolpidem**: Prescription medicine for insomnia ## Supplements and over-the-counter substances -**Caffeine**: The most common cognitive enhancement substance, drink coffee and tea in moderation -**Ginkgo biloba extract**: Some studies have shown that it may improve memory -**L-theanine**: Often used with caffeine, it may bring stable concentration -**Omega-3 fatty acids**: Contribute to overall brain health -**Phosphatidylserine**: A naturally occurring phospholipid The healthiest way to improve cognitive ability is to maintain a good night's sleep, regular exercise, a healthy diet, reduce stress and continuous mental activity. If you have health concerns, please consult your doctor instead of taking your own medicine.