There are some drugs and supplements that have been studied for improving memory and attention, but please note that before using any drug, you should consult a doctor or professional healthcare provider. Here are some common drugs and supplements: 1. **Modafinil**: - How to use: It is usually used to treat narcolepsy, and some people use it to improve attention and cognitive function. The doctor will prescribe it according to the specific situation. - Note: There may be side effects, so you need to follow the doctor's advice. 2. **Methylphenidate**: - How to use: It is mainly used to treat attention deficit hyperactivity disorder (ADHD). It can help improve attention and concentration. - Note: It needs to be used under the guidance of a doctor and there is a risk of addiction. 3. **Armodafinil**: - How to use: Similar to Modafinil, it is used to treat narcolepsy and may help improve attention. - Note: It also needs to be used under the guidance of a doctor. 4. **Caffeine**: - How to use: It is commonly found in coffee and tea. Moderate intake can improve alertness and attention. - Note: Excessive intake may cause anxiety and insomnia. 5. **Omega-3 fatty acids**: - How to use: Usually taken as a supplement, may be beneficial for brain health and support cognitive function. - Note: Generally considered safe, but the recommended dosage should still be followed. 6. **Ginseng**: - How to use: Taken as a supplement, may help improve cognitive function and reduce fatigue. - Note: The effect varies from person to person, and overdose may have side effects. 7. **Ginkgo biloba extract**: - How to use: As a supplement, some studies have shown that it may be beneficial for memory. - Note: It takes time to work, and some people may have an allergic reaction. 8. **N-acetylcysteine (NAC)**: - How to use: An antioxidant that may help improve cognitive function. - Note: It is necessary to follow the recommended dosage and avoid overdose. Before using any medication or supplement, it is best to do sufficient research and discuss it with your doctor or pharmacist to ensure its safety and suitability. At the same time, maintaining good lifestyle habits (such as a balanced diet, regular exercise, and adequate sleep) is also an effective way to improve memory and concentration.