MemoryFuel is a flavourless powder (one scoop a day in water) sold at thememoryfuel.com. Its brand-store label lists creatine monohydrate 5,000 mg, L-theanine 200 mg, choline bitartrate 300 mg, magnesium glycinate 300 mg, vitamin D3 2,000 IU and vitamin B12 25 mcg, with no proprietary blend. Creatine at 5 g is the only ingredient here that matches a dose with cognitive trial evidence, and that evidence is modest. The seller’s page on 30 September 2026 showed $69 for one bottle, $59 a bottle for three and $49 a bottle for six, with a 90-day money-back guarantee, and it has several red flags listed below.
Affiliate disclosure: the button below is an affiliate link. We earn a commission if you buy through it, at no extra cost to you, and it does not change what we write. We have not bought or tested this product; this review is based on the label values, the seller’s pages and the published evidence.
Plain creatine monohydrate is also sold on its own by many brands, so compare the price per 5 g serving before you pay. The link goes to the official site where you can see the current price and guarantee terms.
We earn a commission if you buy through this link. It costs you nothing extra and it does not change what we write.
MemoryFuel doses versus what the trials used
| Ingredient | Per serving (brand-store panel) | Evidence | Verdict |
|---|---|---|---|
| Creatine monohydrate | 5,000 mg | Meta-analyses of 8 and 16 randomized trials found small memory benefits, strongest under stress such as sleep loss; EFSA (2024) did not accept a cognitive health claim | Trial-range dose; modest effect |
| L-theanine | 200 mg | One robust finding: faster choice reaction time about an hour after a dose; not a memory agent | Median trial dose; not on the ClickBank page’s ingredient list |
| Choline bitartrate | 300 mg | A dietary choline source, not a demonstrated cognitive enhancer | Nutrient, not a nootropic |
| Magnesium glycinate | 300 mg | No cognitive trial of this form reviewed here | Nutrient; unproven for memory |
| Vitamin D3 | 2,000 IU | Trials in people with adequate levels found no cognitive benefit | Helps only if you are deficient |
| Vitamin B12 | 25 mcg | Helps cognition only when you are deficient | Helps only if you are deficient |
The amounts above come from the brand’s supplement-facts panel as we recorded it earlier in our reviews. The ClickBank sales page we checked on 30 September 2026 names five ingredients (vitamin D3, B12, magnesium glycinate, creatine, choline) without amounts, says it contains “six” ingredients, and does not name L-theanine. Check the label on the bottle you receive. See creatine dosage for the brain, L-theanine dosage and vitamin B12 and brain fog.
Price, guarantee and red flags on the seller’s page
| Item | Seller’s page (30 Sep 2026) |
|---|---|
| Price | 1 bottle $69 plus shipping; 3 bottles $59 each ($177, free US shipping); 6 bottles $49 each ($294) |
| Guarantee | 90-day money back, by the seller’s statement (we earlier recorded a 365-day guarantee on the brand’s own store, so the two sites disagree) |
| Directions | One scoop daily in 6–8 oz of water |
| Retailer | ClickBank; the page names no manufacturer or street address |
- Reviews count. The page says “our customers say based on 19,651 reviews”. The NeuroPrime page, a different product, shows the identical figure. We could not find the reviews and do not count the number as evidence.
- Unrelated references. The page’s source code includes a “Scientific references” list that cites papers on saw palmetto, shilajit, kidney stones and kelp, none of which are ingredients of this product. The references do not support the product.
- Purity claim. The page says ingredients are tested for purity but names no laboratory and shows no NSF or USP mark.
- “97% of customers order 6 bottles”. This is a sales-pressure claim we cannot verify.
Is it worth it? A plain-language view
The best-evidenced ingredient is creatine, and the benefit in trials is small and appears to be largest in people under metabolic stress, such as sleep-deprived adults. Plain creatine monohydrate is sold by many brands; compare the price per 5 g serving with $49 to $69 a bottle. The other ingredients are nutrients that matter if you are deficient. If you are going to try MemoryFuel, the guarantee is your safety net: keep your order number and the date, and decide at the end of a fixed trial period using a simple rating, not a feeling. Persistent brain fog needs a cause, not a powder; see the brain fog red flags.
Safety
Creatine can affect kidney function tests and should be discussed with a clinician if you have kidney disease. Magnesium glycinate in large amounts can loosen stools, and magnesium can interact with some medicines. Ask a pharmacist about your own prescriptions. The seller tells people who are pregnant, nursing or taking medication to consult a physician first.
Frequently asked questions
Is MemoryFuel legit? The seller’s pages are live and ClickBank is the named retailer, but the page shows red flags (recycled review count, unrelated references, no named manufacturer).
Does MemoryFuel work? We found no published trial of the product. Creatine has modest support at 5 g a day; the other ingredients mainly matter for deficiencies.
How much does MemoryFuel cost? $69 for one bottle, $177 for three and $294 for six on 30 September 2026. Prices change.
Can I get a refund? The seller states a 90-day money-back guarantee. Use the support links at the foot of the seller’s page and keep your order number.
Want the seller’s page directly? Visit the MemoryFuel site (affiliate link).
Related guides
- Neuro-Thrive reviews: doses, price, evidence
- NeuroPrime reviews: ingredients, price, evidence
- Creatine dosage for the brain: what trials used
- Third-party testing: what NSF and USP actually certify
- Do nootropics actually work? An honest tier list
Sources
- MemoryFuel seller page (ingredients, prices, guarantee), viewed 30 September 2026
- Prokopidis et al., creatine supplementation and memory, Nutrition Reviews 2023
- Xu et al., creatine and cognitive function, Frontiers in Nutrition 2024
- EFSA (2024) opinion on a creatine and cognitive function health claim
- L-theanine systematic review and meta-analysis, Nutrition Reviews 2025
- NIH Office of Dietary Supplements: vitamin B12
- NIH Office of Dietary Supplements: magnesium
- VitaMIND: vitamin D supplementation and cognition, JAMDA 2025
These statements have not been evaluated by the Food and Drug Administration. Nothing here is intended to diagnose, treat, cure or prevent any disease.
This article is information, not medical advice. Talk to a doctor or pharmacist about your own situation, especially if you take prescription medication.
