By Avni Dalal, ND
Whether it’s a long workday, a demanding study session, or a regular afternoon when your brain seems to have opened too many tabs at once, maintaining focus can be challenging. While reaching for another cup of coffee may feel like the more accessible solution, feeling more stimulated or energized isn’t necessarily the same as being more focused.
Caffeine can temporarily increase alertness and reduce the perception of fatigue, but cognitive performance also depends on factors such as neurotransmitter (brain chemical) activity, healthy brain cell membranes, adequate cellular energy, stress regulation, restful sleep, and nutritional status. For anyone looking for a more targeted approach, certain nutrients and compounds have actually been found to support attention, memory, and mental clarity without simply pushing the nervous system harder.*
In this blog, we cover several of the most researched nutrients and other options to consider.
Citicoline: A Building Block for Focus and Brain Function
Citicoline, also known as CDP-choline, is a naturally occurring compound involved in the synthesis of phosphatidylcholine, which is an important structural component of brain cell membranes. After ingestion, citicoline breaks down into choline and cytidine; these are the raw materials used to support neuronal membranes and normal brain signals.1
Choline is also needed to produce acetylcholine, a neurotransmitter closely involved in attention, learning, and memory. Because of this, it offers benefits beyond simply increasing arousal; it provides nutritional support for pathways involved in cognitive performance.
Clinical research is encouraging. In a randomized trial of healthy adolescent males, supplementation with 250 or 500mg of citicoline for 28 days was associated with improvements in several measures of attention and impulsivity compared with placebo.2
That distinction is useful when comparing citicoline with caffeine. Someone who is genuinely sleep-deprived will still need rest (something a supplement cannot replace), but for those looking to support mental clarity and sustained attention during cognitively demanding periods, citicoline provides a noncaffeine option.
Vital Nutrients Citicoline uses Cognizin®, a researched form of citicoline. This nootropic nutrient and is formulated to support mental focus, attention, memory, brain cell signaling, and neurotransmitter production.* Vital Nutrients Citicoline delivers 500mg per serving, which is also the studied dose.
Explore Vital Nutrients Citicoline
L-Theanine: When Focus Needs to Feel Calmer
When the obstacle to better concentration is having “too much mental chatter,” L-theanine is another important nutrient to consider.
L-theanine is an amino acid naturally found in green and black tea that has become particularly interesting for its potential effects on attention and stress. It helps you feel calmer without the heavy, drowsy feeling, so you can ease stress while staying clear-headed.
A 2026 systematic review and meta-analysis of 31 randomized trials found that a single 200mg dose of L-theanine improved choice reaction time, although effects across other cognitive and stress outcomes were mixed.3
L-theanine can therefore be particularly useful when stress or overstimulation is competing with focus. It may also be a consideration later in the day or evening, when adding more caffeine could interfere with the sleep needed for cognitive performance the following day.
Interestingly, L-theanine has also been studied alongside caffeine. Research suggests the combination may support certain aspects of attention and task performance.4 For someone already consuming coffee or tea, this may provide a different strategy than simply increasing caffeine intake.
Explore Vital Nutrients L-Theanine
Phosphatidylserine: Supporting Healthy Brain Cell Communication
Healthy focus depends on healthy neurons because their membranes play a major role in how brain cells communicate.
Phosphatidylserine (PS) is a naturally occurring phospholipid found in high concentrations in the brain. It forms part of neuronal cell membranes and contributes to membrane fluidity, cell-to-cell communication, and normal signaling.
PS is a powerful nootropic that has been studied for supporting cognitive function and the body's response to mental stress. While research varies by population and formulation, its structural role in the nervous system makes it an interesting option for broader cognitive health, particularly when mental performance and stress resilience are both priorities.
Unlike caffeine, PS isn't something most people "feel" immediately. It is better thought of as nutritional support that allows brain cells to function and communicate effectively, making it a good fit for adults who want to support memory as they age.
Explore Vital Nutrients Phosphatidylserine
Acetyl-L-Carnitine: Supporting Brain Energy
The brain is remarkably energy-intensive. Despite accounting for only about 2% of total body weight, it consumes roughly 20% of the body's energy at rest.5 That means adequate mitochondrial function is an important part of maintaining cognitive performance.
Acetyl-L-carnitine (ALC) is a form of carnitine that can cross the blood-brain barrier. Carnitine participates in mitochondrial energy metabolism by helping transport fatty acids into mitochondria for energy production.
ALC has been investigated primarily in the context of aging, fatigue, and cognitive impairment. Evidence for cognitive enhancement in otherwise healthy individuals remains limited, so it is better viewed as a nutrient that supports brain energy metabolism rather than as an acute focus enhancer.6
For someone thinking about broader brain wellness or mental stamina, supporting mitochondrial function may be another piece of the cognitive-health puzzle.
Explore Vital Nutrients Acetyl-L-Carnitine
Bacopa: Think Long-Term Memory Support
For those interested in longer-term cognitive support, Bacopa monnieri is another ingredient worth knowing.
Bacopa is an Ayurvedic botanical traditionally used to support cognition and memory. Unlike caffeine or other immediately targeted focus ingredients, Bacopa has generally been studied with consistent supplementation over several weeks.
A systematic review of randomized controlled trials in healthy adults found that most studies evaluated Bacopa for approximately 12 weeks, with the strongest evidence pointing toward improvements in memory recall rather than across every area of cognitive performance.7 A separate meta-analysis study also found potential improvements in certain measures of cognition and speed of attention.8
More recent evidence continues to suggest potential benefits for working and short-term memory, while effects on sustained and selective attention appear less consistent.9
In other words, Bacopa may make more sense for someone thinking about long-term memory and cognitive support than someone simply looking for sharper focus before this afternoon’s meeting.
When a Broader Brain Formula Makes Sense
Individual nutrients can be useful when there is a specific goal: for example, citicoline for targeted attention support or L-theanine when calm focus is the priority. But as we covered, comprehensive cognitive health is rarely dependent on one pathway.
For people looking for broader support, Vital Brain® Powder is a nootropic memory supplement that combines brain-supportive nutrients including glycerophosphocholine (GPC), acetyl-L-carnitine, and phosphatidylserine. Together, these nutrients help support focus, memory, concentration, brain vitality, and healthy responses to everyday stress.*
Explore Vital Nutrients Vital Brain Powder
Summary: Focus Starts With the Foundations
No supplement can compensate indefinitely for inadequate sleep, dehydration, insufficient nutrition, or chronic stress. If focus has felt harder to come by lately, those underlying factors deserve attention first.
But when the foundations are in place, targeted nutritional support can provide another layer.
The next time you think about reaching for another cup of coffee, remember: The goal doesn’t always have to be more stimulation. Sometimes better focus comes from giving the brain the functional nutrients, cellular energy, and calmer environment it needs to continue to do its job well.
References:
1. Secades JJ et al. Methods Find Exp Clin Pharmacol. 1995;17 Suppl B:1–54.
2. McGlade E et al. J Atten Disord. 2019;23(2):121–134.
3. Gerolymos C et al. Mol Psychiatry. 2026. doi:10.1038/s41380-026-03727-9.
4. Haskell CF et al. Biol Psychol. 2008;77(2):113–122.
5. Raichle ME et al. Proc Natl Acad Sci USA. 2002;99(16):10237–10239.
6. Montgomery SA et al. Int Clin Psychopharmacol. 2003;18(2):61–71.
7. Pase MP et al. J Altern Complement Med. 2012;18(7):647–652.
8. Kongkeaw C et al. J Ethnopharmacol. 2014;151(1):528–535.
9. Chaisawang P et al. Phytomedicine. 2026;157915.
