Some nootropics can provide energy and improve alertness and focus. For example, caffeine, which is a commonly used nootropic, is known to increase energy levels and improve cognitive performance.
Other nootropics that may provide energy include those that affect neurotransmitters in the brain, such as dopamine, norepinephrine, and acetylcholine. These include nootropics such as modafinil, adrafinil, and phenylpiracetam.
However, not all nootropics are stimulants and some may even have a calming effect. For example, L-theanine is a nootropic that is commonly used in combination with caffeine to promote a calm and focused state without the jitteriness that caffeine can cause.
It's important to note that taking nootropics for energy should be done with caution, as some nootropics can have negative side effects, such as jitteriness, anxiety, or disrupted sleep. Additionally, it's important to follow dosage guidelines carefully and monitor how your body responds to the nootropic. If you experience any negative side effects, you should stop taking the nootropic and speak with a healthcare professional.