Acetyl-L-Carnitine is the lead active here, studied most for focus and clear thinking. 11 human studies on Acetyl-L-Carnitine back this formula, each one cited. Who it fits: for everyone, adults.
Verified by IngredientMDThe panel on the left is the one we evaluated, line by line.
All 1 actives checked against the clinical evidence: dose, form, and what the research actually shows.
Doses, ratios, and how the ingredients work together. That assessment is the verdict above: "Backed by human trials".
The verdict is public and identical whether or not a brand pays. A formula that does not clear the bar gets nothing.
Read by the engine against 2.1 million data points from clinical trials, PubMed and more than a hundred vetted sources. No individual reviewer is named or implied.
Cross-checked against 1 documented interactions for these actives.
Public health figures the engine matched to this formula's ingredients. Reported by their source, cited and dated, never written by the brand.
25% of employed US adults
reported difficulty focusing at work in the past month, in the American Psychological Association's 2024 Work in America survey.
American Psychological Association and The Harris Poll, 202412.7% of US adults aged 60 and over
in 21 states reported increased confusion or memory loss in the preceding 12 months, in the 2011 Behavioral Risk Factor Surveillance System.
CDC, MMWR Surveillance Summaries, 201517% of US adults
reported trouble focusing over the past year, in a 2017 Ipsos poll of 1,008 adults.
Ipsos, 20177.4% of US adults
reported serious difficulty concentrating, remembering or making decisions in 2023, up from 5.3% in 2013, and among adults aged 18 to 39 the share nearly doubled, from 5.1% to 9.7%, in the Behavioral Risk Factor Surveillance System.
Neurology, 2025More than 1 in 4 US adults aged 50 to 73
regularly take a supplement for their brain health, rising to 36% of those over 74, and memory is the reason 71% give, in AARP's 2019 survey.
AARP, 201953% of US adults
say they spend too much time on their smartphone, about 7 in 10 of adults under 30, in a Pew Research Center survey of 9,750 adults in 2026.
Pew Research Center, 202659 to 66 days
was the median time it took adults to make a new daily health habit automatic across the studies a 2024 review pooled, with individuals ranging from 4 to 335 days.
Systematic review and meta-analysis, 202461% to 74%
About 61 to 74 percent of adults refilling a long-term medicine on their own stopped within a year, versus 33 to 44 percent on one set pickup day.
Cohort study, 2015Systematic review and meta-analysis, 2019
Pooling four trials, acetyl-L-carnitine supported nerve function and eased nerve-related discomfort by about 20 percent from baseline versus placebo.
Journal of Pain ResearchSystematic review and meta-analysis, 2018
Across nine randomized trials, acetyl-L-carnitine lowered low-mood scores more than placebo (standardized mean difference about -1.1), with few reported adverse effects.
Psychosomatic MedicineSystematic review, 2024
The reviewers found human studies of carnitine forms across mood and neurological measures to be mixed in design and result, and stopped short of a firm conclusion.
NutrientsSystematic review, 2017
Two short trials in healthy young adults found no effect of L-carnitine or its acetyl form on reaction time, alertness or memory, with evidence rated very low quality.
Cochrane Database of Systematic ReviewsSystematic review, 2012
The reviewers reported that the trial evidence was insufficient to detect whether carnitine changes fatigue scores, which is a failure to detect rather than a finding of no effect.
Cochrane Database of Systematic ReviewsMeta-analysis, 2019
In a meta-analysis, L-carnitine combined with acetyl-L-carnitine improved low sperm motility versus placebo (standardized mean difference about 0.57).
Reproductive Biomedicine OnlinePopulation figures from public health data. Context for the category, not a statement about any individual and not a claim about this product.
Each line below was derived from this formula's own record at the time of verification. Nothing here was written by the brand, and nothing can be added that the evidence does not carry.
One ingredient, from its own page.
Some people notice a clearer head within the first few days. The steadier changes in mental stamina and everyday fatigue land across three to eight weeks.
How each ingredient usually behaves over time, from its own page on IngredientMD. General timing for the ingredient, not a measurement of this product.
It is a capsule, so the amount per serving is fixed and travels without measuring.
Put an earned verification on your own product page.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. This record is not medical advice. Always consult your healthcare provider before starting any supplement regimen.
