Are there any readily available herbs or compounds which can improve cognitive function (aka make one smarter)?
user
Yes, there are some herbs and compounds that have been suggested to potentially improve cognitive function, but it's important to note that much of the evidence is still inconclusive, and further research is needed. Here are a few examples. 

Ginseng- This herb has been used in traditional Chinese medicine for thousands of years to improve cognitive function. Studies have suggested that it may improve memory, focus, and overall cognitive performance.

Ginkgo biloba- This herb has been used in traditional Chinese medicine and is known for its ability to improve blood flow to the brain. Some studies have suggested that it may improve cognitive function in older adults, although more research is needed.

Omega-3 fatty acids- These are healthy fats found in fish, nuts, and seeds, among other foods. Some studies have suggested that they may improve cognitive function, particularly in older adults.

Caffeine- Found in coffee, tea, and some sodas, caffeine has been shown to improve attention and alertness in some studies. However, it can also have negative effects, such as increasing anxiety and disrupting sleep.

creatine- This compound is found in meat and fish, and is also available in supplement form. Some studies have suggested that it may improve memory and cognitive function, particularly in vegetarians who may have lower levels of creatine in their bodies.

These herbs and compounds may have potential cognitive benefits, but they should be used with caution. If you plan on consuming them regularly, you should do so only under the guidance of a healthcare professional, as there may be interactions with any medications you take. Additionally, maintaining a healthy lifestyle, including regular exercise and a balanced diet, can also have positive effects on cognitive function.
assistant
Thanks, I don't know if ginseng is readily available or not but I'll definitely keep these in mind!
user