Editorial Disclosure: This comparison is an independent editorial analysis and does not constitute medical advice. MedicalFoundationOfNC.org is an independent editorial publication — not a medical practice, hospital, or healthcare provider. This article is published in Traffic-first mode. No affiliate relationships with any product evaluated here are active at time of publication. All product information is sourced from official brand websites and published materials. Pricing and formulas are subject to change; verify current details at each brand's official site. These statements have not been evaluated by the Food and Drug Administration. Dietary supplements are not intended to diagnose, treat, cure, or prevent any disease. Consult a qualified healthcare professional before starting any supplement.
By MedicalFoundationOfNC.org Editorial Team
Quick Answer: This comparison evaluates four nootropic supplements — Memopryl, Mind Lab Pro, Neuriva, and Prevagen — against five criteria: ingredient transparency, dose disclosure, research quality, price-per-day, and refund terms. Mind Lab Pro leads on transparency and finished-product clinical data. Memopryl offers the lowest price-per-day at its best-value tier with a five-ingredient formula. Neuriva is the simplest to evaluate. Prevagen has the weakest independent evidence base despite its consumer recognition. The right product depends on your priorities and prescription medication list.
How We Evaluated These Cognitive Support Products
This comparison was constructed to give readers a structured, criteria-consistent evaluation of four products that appear frequently in the cognitive supplement category across multiple buyer profiles. It is not a ranked list with an implied winner. The goal is to give you a clear framework for deciding which product's strengths align with your specific situation.
Products were selected based on market presence, SERP visibility in the cognitive supplement category, and overlap with the buyer profiles who most commonly research these products. All four are direct-to-consumer products available without a prescription. Each was evaluated against the same five dimensions: (1) ingredient transparency — does the brand disclose what is in the formula and at what dose?; (2) dose disclosure — are per-ingredient milligram amounts publicly available?; (3) research quality — what is the evidence grade for the primary active ingredients?; (4) price-per-day — what does a consistent regimen cost at the best available tier?; (5) refund terms — what does the guarantee actually require?
No independent product testing was conducted by this editorial team. All information is sourced from each brand's published materials, Supplement Facts panels where accessible, and publicly available pricing as of May 2026. This comparison does not constitute an endorsement of any product listed. It is a structured analysis designed to help readers make more informed evaluations.
The Comparison Framework: Five Decision Points That Matter
These are the five decision points this comparison evaluates across all four products. Each product section below scores the same five dimensions so you can compare directly.
Ingredient transparency: Is the formula fully disclosed — all active ingredients named with individual dosages?
Dose vs. research: Do the ingredient amounts match or approximate the doses used in positive-outcome published research?
Research quality: Is the evidence for the primary ingredients peer-reviewed, replicated, and assessed in appropriate populations?
Price-per-day: At the best available pricing tier, what does consistent use cost per day?
Refund terms: What does the money-back guarantee actually require — return shipping, product return conditions, window calculation?
Memopryl
Memopryl is a five-ingredient cognitive supplement distributed by GEX Corp (Lakeland, FL), manufactured in an FDA-registered USA facility following GMP standards. The verified Supplement Facts panel lists: BCAAs 2:1:1 (540 mg), Bacopa Monnieri Extract (200 mg), Rhodiola Rosea Extract — 3% Salidroside (100 mg), L-Theanine (100 mg), Panax Ginseng Extract (90 mg). Contains no stimulants and no common allergens.
Ingredient transparency: The Supplement Facts panel discloses all five ingredients with per-serving amounts. Important context: third-party content across the SERP describes a different eight-ingredient formula for Memopryl. That formula — listing Ginkgo Biloba, Alpha-GPC, Huperzine-A, and others — does not match the verified label. Buyers should verify the Supplement Facts panel on the official product page rather than relying on third-party ingredient lists.
Dose vs. research: Bacopa at 200 mg falls below the 300–450 mg range used in the strongest clinical trials. Rhodiola at 100 mg is at the lower end of the research range. L-Theanine at 100 mg is within the studied range, though its best evidence involves caffeine co-administration not present in this formula. Panax Ginseng at 90 mg is slightly below common research doses. BCAAs at 540 mg are the dominant ingredient by volume but have limited cognitive-specific research at supplement doses.
Research quality: Bacopa Monnieri and Rhodiola Rosea each have genuine peer-reviewed clinical research bases. L-Theanine has robust research in caffeine-combination context. The overall formula research quality is moderate — real ingredient evidence exists, but the dose math gap between Memopryl's formula and the most positive research protocols is meaningful for Bacopa specifically.
Price-per-day: Six-bottle package at $294 total = 180 days of supply = approximately $1.63/day. This is the lowest price-per-day across the four products in this comparison at the best available tier.
Refund terms: 60-day guarantee from shipping date. All bottles must be returned (empty, partial, or full) at buyer expense. Must contact support before returning. Complete-return, buyer-pays-shipping model.
Mind Lab Pro
Mind Lab Pro is a multi-ingredient nootropic manufactured by Performance Lab (UK-based brand with USA distribution). The formula contains 11 disclosed ingredients: Bacopa Monnieri (150 mg standardized to 24% bacosides), Lion's Mane Mushroom (500 mg), Citicoline as Cognizin (250 mg), Phosphatidylserine from sunflower lecithin (100 mg), N-Acetyl-L-Tyrosine (175 mg), L-Theanine (100 mg), Rhodiola Rosea (50 mg standardized to 3% rosavins and 1% salidroside), Maritime Pine Bark Extract (75 mg), Vitamins B6, B9, and B12. All per-ingredient dosages are publicly disclosed on the brand website.
Ingredient transparency: Highest in this comparison. All 11 ingredients disclosed with per-ingredient milligram amounts and standardization levels publicly available — not just on the physical label but on the brand's website. This is the most useful transparency level for comparing to published research protocols.
Dose vs. research: Mind Lab Pro's Bacopa dose (150 mg) is actually lower than Memopryl's (200 mg), but the 24% bacoside standardization is disclosed — providing better research comparability than an undisclosed standardization at a higher volume dose. The formula's Citicoline (250 mg Cognizin) and Phosphatidylserine (100 mg from sunflower) are at or near research-studied doses. Lion's Mane at 500 mg is within the range used in published trials. Mind Lab Pro's proprietary finished-product study (published, peer-reviewed) found significant improvements in information processing in young adults — the first in this category to have finished-formula clinical data.
Research quality: Highest in this comparison. Multiple ingredients with peer-reviewed human trial support, and the product itself has a published finished-formula clinical study. This does not mean Mind Lab Pro is clinically proven to work for any individual buyer — it means the evidence quality is stronger than any other product in this comparison.
Price-per-day: Approximately $2.25–$2.50/day at subscription or multi-bottle pricing. Higher than Memopryl at its best-value tier.
Refund terms: 30-day money-back guarantee. Return required. Shorter window than Memopryl.
Neuriva
Neuriva is a widely distributed cognitive supplement manufactured by Reckitt (formerly Schiff). Its formula is intentionally simple: Coffee Cherry Extract (standardized to 100 mg) and Phosphatidylserine (100 mg). The product is available at major pharmacy chains and mass retailers in addition to direct-to-consumer channels. Neuriva is caffeine-free and gluten-free.
Ingredient transparency: High. Two ingredients, both disclosed with amounts. The simplest formula to verify in this comparison.
Dose vs. research: Phosphatidylserine at 100 mg is consistent with FDA-qualified health claim research (the FDA authorized a qualified health claim for phosphatidylserine and cognitive function, noting the evidence is limited and not conclusive). Coffee cherry extract targets BDNF (brain-derived neurotrophic factor) — the research on NeuroFactor (its branded Coffee Cherry ingredient) shows BDNF elevation in a small pilot study. BDNF is involved in neuronal health; whether a serum BDNF elevation from this extract produces cognitive outcomes in daily function is less established.
Research quality: Moderate for Phosphatidylserine; emerging and limited for the Coffee Cherry/BDNF pathway at this dose. Neither ingredient is associated with drug interaction concerns at these doses for most adults.
Price-per-day: Approximately $0.75–$1.00/day depending on retailer and format. The most accessible price point in this comparison.
Refund terms: Varies by retailer. Direct-purchase refund policy available through brand website. Retail store returns follow each retailer's own policy.
Prevagen
Prevagen is one of the most widely recognized cognitive supplement brands in the United States, primarily due to its television advertising. Its active ingredient is apoaequorin — a calcium-binding protein originally derived from jellyfish — at 10 mg per capsule in the regular strength version. The brand has expanded to several formula variants.
Ingredient transparency: Simple disclosure. Apoaequorin is the stated active ingredient. The mechanism claim — that this protein supports brain function — is the subject of ongoing scientific and regulatory scrutiny.
Dose vs. research: Prevagen's own clinical study, the Madison Memory Study, showed significant cognitive improvements in a subgroup analysis but not in the primary intention-to-treat analysis. Independent scientific review has raised questions about whether apoaequorin as an oral supplement survives digestive processing in a form that can act on the brain. The FTC and the New York Attorney General challenged Prevagen's advertising claims in 2012; the case was settled in 2023 without an admission of wrongdoing, but the FTC action reflected the agency's position that Prevagen's evidence did not support its broad cognitive claims.
Research quality: Weakest in this comparison. The primary active ingredient has contested mechanistic plausibility for oral supplementation and disputed evidentiary support for its primary marketing claims. Ingredient-level evidence is weaker than that available for Bacopa Monnieri, Phosphatidylserine, or Lion's Mane in the other products evaluated here.
Price-per-day: Approximately $1.00–$1.75/day depending on formula and retailer.
Refund terms: Satisfaction guarantee varies by retailer and purchase channel.
Side-by-Side: The Five Decision Points
Ingredient transparency: Mind Lab Pro (all 11 ingredients with dosages publicly disclosed) leads, followed by Neuriva (2 ingredients, both disclosed) and Memopryl (5 ingredients on physical label), then Prevagen (apoaequorin disclosed but mechanism contested).
Dose vs. research: Mind Lab Pro aligns most closely with published research protocols for its primary ingredients. Memopryl's Bacopa dose (200 mg) falls below the most-studied range (300–450 mg). Neuriva's Phosphatidylserine (100 mg) is within the qualified health claim range. Prevagen's apoaequorin has contested dose-to-mechanism research.
Research quality: Mind Lab Pro (finished-product clinical data, multiple peer-reviewed ingredients) leads. Bacopa Monnieri (Memopryl, Mind Lab Pro) and Phosphatidylserine (Neuriva, Mind Lab Pro) have the strongest individual ingredient bases. Prevagen trails significantly.
Price-per-day: Neuriva leads on lowest price-per-day at retail. Memopryl offers the lowest direct-to-consumer price at the 6-bottle tier (~$1.63/day). Prevagen mid-range. Mind Lab Pro highest.
Refund terms: Memopryl's 60-day guarantee (return required, buyer pays shipping) is the longest window. Mind Lab Pro offers 30 days. Neuriva and Prevagen vary by retailer.
Which Formula for Which Situation
For the buyer who prioritizes ingredient transparency and finished-product research: Mind Lab Pro offers the most complete publicly-disclosed formula, all 11 ingredients with dosages, standardization levels, and the only finished-product clinical study in this comparison. The higher price point reflects a genuine transparency and research investment. Buyers who want to compare every ingredient to the published literature and have that comparison fully supported can do so with Mind Lab Pro in a way they cannot with the other products here.
For the buyer who prioritizes lowest price-per-day for consistent supplementation: Memopryl at the six-bottle tier (~$1.63/day) is the lowest direct-to-consumer price point in this comparison. The formula is allergen-free and stimulant-free. The ingredient evidence is real but the Bacopa dose is below the best-studied range. For buyers with no prescription drug interactions and a tight supplementation budget, this represents a real option — with the understanding that the third-party ingredient descriptions circulating online do not match the verified label.
For the buyer who wants the simplest formula to review with a prescriber: Neuriva's two-ingredient formula is the easiest to evaluate in a pharmacist consultation. Showing a pharmacist a two-ingredient supplement takes less review time than a five- or eleven-ingredient product, which matters for adults managing complex prescription regimens.
For the buyer who already uses Prevagen and is re-evaluating: The FTC action and independent scientific critique of apoaequorin's oral bioavailability and mechanism are worth reviewing before continuing. Among the alternatives in this comparison, both Memopryl (price-conscious) and Neuriva (simple formula) offer ingredient profiles with less contested evidence bases at similar or lower price points.
Frequently Asked Questions
Which nootropic supplement is most transparent about ingredients?
Among the four products evaluated — Memopryl, Mind Lab Pro, Neuriva, and Prevagen — Mind Lab Pro discloses per-ingredient milligram dosages for all 11 of its active ingredients on its product website, making it the most transparent on dose disclosure. Neuriva discloses a simple two-ingredient formula with dosages. Memopryl discloses its five-ingredient formula on the physical Supplement Facts label. Prevagen's active ingredient is apoaequorin with its cognitive claims having been the subject of regulatory scrutiny and contested mechanistic plausibility for oral use.
Is Mind Lab Pro better than Memopryl?
Mind Lab Pro and Memopryl serve different formulation philosophies and different buyer profiles. Mind Lab Pro has 11 disclosed ingredients with per-ingredient milligram dosages published, finished-product human clinical trial data, and a more complete research profile. It is the higher-transparency option and the higher-price option. Memopryl has a five-ingredient formula priced significantly lower per day at its best-value tier with no stimulants or common allergens. For buyers who prioritize dose transparency and are willing to pay a premium, Mind Lab Pro has structural advantages. For buyers prioritizing price-per-day with fewer prescription drug interaction concerns, Memopryl's lower-cost tiers may fit their situation.
Is Prevagen worth buying?
Prevagen's active ingredient — apoaequorin — has been evaluated by the Federal Trade Commission and the New York Attorney General, both of which disputed the strength of the brand's cognitive claims in its advertising. Independent scientific review has questioned whether apoaequorin survives digestion in a form that can affect brain function. The brand's own clinical study showed positive results in a subset analysis but not in the primary trial endpoints. For buyers who want a supplement with solid ingredient-level research support, other products in this comparison have stronger evidence bases for their primary active ingredients.
What is the best nootropic supplement for adults over 50?
There is no single best nootropic supplement for all adults over 50, because cognitive needs, medication lists, and budget vary significantly. Based on ingredient research and dose transparency, Mind Lab Pro has the most complete evidence profile for general cognitive support, with clinical data on its finished formula. Neuriva's two-ingredient formula is the simplest to evaluate and review with a prescriber. Memopryl offers the lowest price-per-day at its six-bottle tier with no stimulants or common allergens. Adults over 50 who take prescription medications should prioritize reviewing any supplement's ingredients with a pharmacist before selecting, as interaction risk becomes more relevant with age and polypharmacy.
For a detailed review of Memopryl including formula verification and pricing, see our Memopryl Review 2026. For ingredient research context, see our Bacopa, Rhodiola, and Theanine Research Guide. For drug interaction guidance, see our Cognitive Supplement Safety Guide. For background on cognitive aging, see our Cognitive Aging and Memory Decline Guide.
Editorial Disclosure: MedicalFoundationOfNC.org is an independent editorial publication. This article is published in Traffic-first mode; no affiliate relationships with any product evaluated here are active at time of publication. All product information sourced from official brand materials and published sources as of May 2026. Pricing and formulas are subject to change. These statements have not been evaluated by the Food and Drug Administration. Dietary supplements are not intended to diagnose, treat, cure, or prevent any disease. Consult a qualified healthcare professional before starting any supplement.