There are different natural supplements and drugs available which can help you by boosting your brainpower.

Fish oils

Fish oil supplements contain high levels of omega-3 fatty acids which can offer you many health benefits besides improving your brain health. DHA, which is one type of omega-3 fatty acids, is crucial for maintaining the structure and function of your brain. EPA, which is another fatty acids found in fish oils, has anti-inflammatory effects which can protect your brain against the damage and ageing. If you take DHA supplements, it can help you to improve thinking skills, memory and reaction times. People who experience a mild decline in brain function can take this supplement and improve their brain function. You can take fish oil which contains both these fatty acids.

Resveratrol

Resveratrol is an antioxidant that focus naturedly in the skin of red and purple fruits. That is why you need to consume more grapes, rasp berries and blueberries. It is also available in red wine, chocolate and peanuts. You can take resveratrol supplements to prevent deterioration of your hippocampus. This part of your brain is associated with memory. By taking resveratrol, you can slow down the decline in brain function as you get older.

Caffeine

Caffeine is a natural stimulant and it can help you to improve your brain function. If you want more focus and mental clarity, you can use some of the caffeine sources. It is available in tea, coffee and dark chocolate. It can also take it as a supplement but since it is already available in tea, coffee and dark chocolate, by drinking and eating them, you can naturally get enough caffeine for you. It stimulates your brain and central nervous system and as a result makes you more alert and less tired. You will feel more energised and at the same time it will also improve your memory, reaction times and general brain function. For most of the people, single doses of around 200 to 400 mg per day is good enough for health benefits. In a cup of coffee, you can get 50 to 400 mg of caffeine.

Acetyl-L-Carnitine

Acetyl-L-Carnitine is an amino acid which is naturally produced in your body. It plays an important role in your metabolism and energy production. If you take this through supplement, it can help you to feel more alert, improve your memory as the same time can reduce age-related memory loss. These are available in supplement forms which can be easily procured from local source or from online sellers. Scientific studies done on animals found that this supplement can prevent age-related decline in brain function and at the same time can increase learning capacity. Scientific studies done on humans found that it can slow the decline in brain function that happen due to ageing. It is also useful in improving brain function in people with mild dementia or Alzheimer's.

Ginkgo biloba

Ginkgo biloba is a herbal supplement. This supplement is procured from Ginkgo biloba tree. It is a very popular supplement which is believed to increase brainpower. It increases flow of blood to the brain and thereby can improve brain functions like focus on memory.

References 1. Untapped Focus
2. Neuroplasticity and Clinical Practice: Building Brain Power for Health
3. Foods linked to better brainpower