Thesis Clarity Review 2026

Most of Clarity's score comes from its two plainest ingredients. The 100 mg of caffeine and the 250 mg of CDP choline both reach the amounts their studies started from, and they're the part with the best case for doing something. The ingredients Thesis builds the neuroplasticity story around do much worse, though. Lion's mane is a fraction of its studied dose and in a different form, the ginseng is a stem and leaf extract rather than the root extract the trials used, and 7,8-dihydroxyflavone has no human trial at all.

That gap shows up in the evidence score as well, because each ingredient's research only counts as far as its dose does. The label itself is clear, with every amount printed, but testing scores zero. The only "certificate of analysis" link on the product page opens a study abstract.

The panel gives six ingredients in a 2-capsule serving, 25 servings to a month's pouch, and an amount for each one, with no blend.¹ The one thing missing is a ratio or marker for the lion's mane extract, which makes it hard to say how much of the mushroom you're actually getting.

The product page says to take two capsules a day but to adjust between one and three depending on sensitivity, and three capsules would be 150 mg of caffeine.² It also says not to use Clarity if you're pregnant or nursing.

Caffeine and CDP choline are the solid part. A cup of coffee's worth of caffeine sits comfortably inside the 40 to 300 mg range where reviews of the research find better attention and reaction time.⁹ CDP choline is another name for citicoline, and the 250 mg here matches the lower dose in a 28-day trial in 60 healthy women, where both doses helped on an attention task.¹⁰ The label doesn't say whether it's the sodium salt, so we take the 250 mg at face value.

Lion's mane is 500 mg of a fruiting-body extract, with no ratio or marker printed.¹ The trial we use as its benchmark gave 1,800 mg a day of dried fruiting-body powder to young adults for 28 days.³ An extract is a different material from the powder, so it's capped at half credit, and at 28 percent of the dose it comes in well below that anyway.

Ginseng is 200 mg, the same amount as the lower dose in a trial of G115 that found better performance on demanding mental tasks in 30 young adults.¹¹ Clarity's is a stem and leaf extract at a minimum of 15 percent ginsenosides, though, while G115 comes from the root, and the two don't carry the same mix of compounds. So the dose matches, but the extract doesn't, and it gets half credit.

The 30 mg of 7,8-dihydroxyflavone is the ingredient the product page links most closely to neuroplasticity. It's been studied in hundreds of lab and animal papers, but we found no human trial of it at any dose,⁴ so there's no benchmark to check 30 mg against and it earns no dose credit. The 5 mg of vitamin B6 is a nutrient, so we don't score it.

Thesis Clarity against its closest matches

Shared ingredientsFull formula

Add a product to compare+ Add a productVyvamind

Product	TThesis ClarityThis review	×Focus Support	×Neutonic Productivity Drink	×Transparent Labs Cognition
Scientific audit	5.2/10	6.5/10	6.7/10	7.8/10
Buyer rating	9.6/10	9.2/10	8.6/10	9.7/10
Price per serving	$5.16	$2.97	$3.00	$1.67
Doses of Thesis Clarity's ingredients
Citicoline	250 mgCDP choline (generic)At or above the study dose benchmark	500 mgCognizinAt or above the study dose benchmark	500 mgCognizinAt or above the study dose benchmark	250 mgCognizinAt or above the study dose benchmark
7,8-Dihydroxyflavone	30 mg7,8-dihydroxyflavoneNo cognitive dose range	Not in formula	Not in formula	Not in formula
Lion's Mane Mushroom	500 mgfruiting body extract, no ratio or marker1,300 mg below the study dose benchmark	100 mg20:1 fruiting body extract1,700 mg below the study dose benchmark	Not in formula	Not in formula
Caffeine	100 mgcaffeineAt or above the study dose benchmark	80 mgfrom Coffeeberry Energy whole coffee fruit extractAt or above the study dose benchmark	120 mgnatural caffeine, source not statedAt or above the study dose benchmark	100 mgPurCaf organic caffeine from green coffee beanAt or above the study dose benchmark
Panax Ginseng	200 mgstem and leaf extract, min. 15% ginsenosides (not G115; ruling K caps non-G115 extracts)Half credit	Not in formula	200 mgAsian ginseng root extract, no ginsenoside standardization printed (not G115)Half credit	Not in formula

The products that share the most cognitive ingredients with Thesis Clarity are shown first. Any product sharing at least two can be added.

If you mainly want the caffeine and citicoline, Transparent Labs Cognition scores higher and costs $1.67 a serving. Within the same brand, Thesis Motivation costs the same and is built around energy rather than focus. And if it's lion's mane you're curious about, the powder on its own is cheap, and the list further down prices it at its studied amount.

A month of Clarity costs $129.00 as a one-time order, which is $5.16 a serving and one of the highest prices per serving we've audited.² The subscription starts with a first box at less than half that price, then charges about a third more than the first box every 25 days, which is still well under the one-time price. Thesis also sells Clarity in its own Amazon store, and the help center says orders there come with a 45-day guarantee.⁸¹²

• takethesis.com direct

  Listed price

  $129.00

  Per serving

  $5.16

  Status

  In stock (one-time)

This lists the five ingredients we score as separate bottles at the amounts their studies started from. 7,8-dihydroxyflavone has no studied amount, so four are priced.

Lift Big Eat Big took all four current Thesis formulas for 60 days and was assigned Clarity first. It reports nothing in the first week and better sustained focus by the second, and gives the brand 3.5 out of 5.¹³ It calls the 500 mg of lion's mane "within the studied range", but the 16-week trial in older adults it describes used about 2,880 mg of fruiting-body powder a day.¹⁴ It also puts the ginseng inside the doses tested in trials, which is true of the amount, but those trials used a root extract. Most other pages that rank for Thesis Clarity describe the older six-blend personalized kit, which Thesis no longer sells.

Each serving has 100 mg of caffeine, and three capsules, the most the product page suggests, has 150 mg. The FDA cites 400 mg a day as an amount not generally linked with harm in healthy adults, and people vary in how sensitive they are,¹⁵ so count Clarity with your coffee, and take it in the morning if caffeine affects your sleep. Ginseng might lower blood sugar and interact with some medications,¹⁶ and nobody knows how 7,8-dihydroxyflavone behaves in people over time, because it hasn't been tested in them.⁴

The product page says not to use it if you're pregnant or nursing, and to check with your doctor first if you have a medical condition or take medication.² We're researchers, not doctors.

Clarity works as a caffeine and citicoline capsule, and both of those are at the doses their research supports. The rest is where it falls short. The lion's mane and ginseng aren't in their studied forms, the lion's mane is well under its dose, and the ingredient most tied to the neuroplasticity pitch has no human trial. On top of that, it's priced near the top of everything we've audited.

If you like caffeine with citicoline and want to try it on Thesis's first-order refund, Clarity is a reasonable way to do that. If you're buying it for the long-term brain benefits on the product page, the evidence isn't there yet, and the four ingredients with studied amounts cost about a quarter as much bought separately.

16 sources cited

1. Thesis Clarity supplement facts, with caffeine, image on try.takethesis.com. 2 capsules a serving, 25 servings, vitamin B6 (as pyridoxal-5'-phosphate) 5 mg, lion's mane extract (fruiting body) 500 mg, CDP choline 250 mg, Panax ginseng extract (stem and leaf, standardized to min. 15% ginsenoside) 200 mg, caffeine 100 mg, 7,8-dihydroxyflavone 30 mg. Badges for "third party lab tested" and "fully transparent ingredient list". Accessed Nov 10, 2026. Label image
2. Thesis (Outliers, Inc.). Clarity product page. With and without caffeine at the same price, one-time $129, subscription $59 first box then $79 every 25 days, directions to take two capsules daily and "Adjust to 1-3 capsules", caution for medical conditions, medication, pregnancy and nursing, "designed to promote neuroplasticity and encourage the growth of new neural connections", "83% of people felt more focused" with a footnote (open-label survey, November 2025, 150 customers on Thesis for at least 30 days, $10 store credit), a "third-party tested" badge, a "Citations & Lab Tests" link labelled "CDP Choline Certificate of Analysis" that opens a PubMed abstract, and the 50% improvement money-back promise. Accessed Nov 10, 2026. takethesis.com
3. Docherty S, et al. The acute and chronic effects of lion's mane mushroom supplementation on cognitive function, stress and mood in young adults. Nutrients, 2023. 1,800 mg a day of fruiting-body powder for 28 days, 41 adults aged 18 to 45. PMID 38004235
4. PubMed search for 7,8-dihydroxyflavone in titles and abstracts, filtered to clinical trials and randomized controlled trials. 0 records (399 records without the filter, all laboratory or animal work). ClinicalTrials.gov search for 7,8-dihydroxyflavone, 0 studies. Accessed Nov 10, 2026. pubmed.ncbi.nlm.nih.gov
5. ClinicalTrials.gov searches for Thesis Clarity and for the sponsor Outliers, Inc. One registered trial, of Thesis's Stasis supplement, and none of Clarity. Accessed Nov 10, 2026. clinicaltrials.gov
6. Bruce SE. Improvements in quantitative EEG following consumption of a natural citicoline-enhanced beverage. Int J Food Sci Nutr, 2012. 10 healthy adults, one drink each way, crossover. The paper the Clarity page links as its "CDP Choline Certificate of Analysis". PMID 22578105
7. Thesis. Shipping and return policy (last updated May 9, 2024). Full refund including shipping, for any reason, within 30 days of delivery, first order only. Accessed Nov 10, 2026. takethesis.com/policies/refund-policy
8. Amazon. THESIS Clarity, one listing family sold by Take Thesis, with caffeine (refill B0GPGBD3TR, kit B0DJHDMF2Y) and caffeine free (refill B0HBSXWSRH, kit B0HD2WYM6G), sharing one rating pool. Accessed Oct 23, 2026. amazon.com
9. McLellan TM, Caldwell JA, Lieberman HR. A review of caffeine's effects on cognitive, physical and occupational performance. Neurosci Biobehav Rev, 2016. Doses from about 40 to 300 mg improve vigilance, attention and reaction time. PMID 27612937
10. McGlade E, et al. Improved attentional performance following citicoline administration in healthy adult women. Food Nutr Sci, 2012. 250 or 500 mg a day for 28 days, 60 women aged 40 to 60. doi.org
11. Reay JL, Kennedy DO, Scholey AB. Single doses of Panax ginseng (G115) reduce blood glucose levels and improve cognitive performance during sustained mental activity. J Psychopharmacol, 2005. 200 or 400 mg of G115 root extract, 30 young adults. PMID 15982990
12. Thesis help center. Do you offer refunds or returns? (updated June 4, 2026). First-order refund, and a 45-day satisfaction guarantee for purchases from the brand's Amazon store with proof of purchase. Accessed Oct 29, 2026. thesis.applied.guide
13. de Lacey J. Thesis nootropics review. Lift Big Eat Big, Mar 19, 2026. All four current formulas taken for 60 days, the quiz assigned Clarity, overall rating 3.5 out of 5 for the brand. Calls Clarity's 500 mg of lion's mane "within the studied range" and the 200 mg of ginseng within "the 100-400mg range tested in trials". Accessed Nov 10, 2026. liftbigeatbig.com
14. Mori K, et al. Improving effects of the mushroom Yamabushitake (Hericium erinaceus) on mild cognitive impairment. A double-blind placebo-controlled clinical trial. Phytother Res, 2009. 3,000 mg a day of tablets made of 96% dried fruiting body powder, about 2,880 mg of powder, for 16 weeks, 30 adults aged 50 to 80. PMID 18844328
15. US Food and Drug Administration. Spilling the beans, how much caffeine is too much? Consumer update, content current as of Aug 28, 2024. 400 mg a day for most healthy adults. Accessed Nov 10, 2026. fda.gov
16. National Center for Complementary and Integrative Health. Asian ginseng, usefulness and safety. Might lower blood sugar, might interact with certain medications. Accessed Nov 10, 2026. nccih.nih.gov