There are some medications and supplements that are thought to help improve memory and focus, but be sure to consult a doctor before using them, as these medications may have side effects or interact with other medications. Here are some common options: 1. **Caffeine**: Commonly found in coffee, tea, chocolate, and some energy drinks, caffeine can improve focus and alertness in the short term. It is generally recommended to consume in moderation to avoid excessive intake that may cause insomnia or anxiety. 2. **Ginkgo Biloba Extract**: It is said to improve blood flow to the brain, thereby improving memory. It is usually taken in the form of capsules or tea, but the effect varies from person to person. 3. **Omega-3 fatty acids**: Commonly found in fish oil, some studies show that it may help maintain brain health and improve memory function. It is usually taken once or twice daily, depending on the dosage recommended for the specific product. 4. **Ginseng**: It is believed to improve energy and cognitive function. It usually exists in supplement form, and the method of taking should be based on the product instructions. 5. Ritalin (methylphenidate) and Modafinil: These drugs are used in some countries to treat attention deficit hyperactivity disorder (ADHD) and narcolepsy. They can improve attention and concentration, but require a prescription. 6. Choline: A compound related to the B vitamins that is said to support brain function and improve memory. It is usually taken through dietary supplements or oral supplements. Before using any medicine or supplement, be sure to check with your doctor to confirm whether it is appropriate for your medical condition and existing medications. The effectiveness of any medicine or supplement that improves cognitive function may vary from person to person, and the scientific evidence to support it may be limited.