Quick answer
A good PQQ supplement is unglamorous: PQQ disodium salt at 20 mg per capsule, in an opaque bottle, from a company that publishes a lot-matched third-party certificate of analysis showing measured potency and heavy-metal screening. The disodium salt is the form used in essentially every human trial and the form covered by FDA GRAS notifications and the EFSA novel-food assessment, so a label that just says 'PQQ' is telling you less than it should. Twenty milligrams is the studied dose, and higher-strength products are offering an unstudied dose rather than a better one. Because PQQ is expensive per gram and impossible to judge by sight or taste, independent potency verification matters more here than for almost any other mitochondrial ingredient. In PQQ plus CoQ10 combination products, the usual failure is a token 30 to 50 mg of CoQ10 next to a full PQQ dose, which is well below what CoQ10 itself was studied at.
Key takeaways
- Buy PQQ disodium salt specifically. It is the form used in the human trials and the form with FDA GRAS notifications and an EFSA novel-food assessment behind it. A bare 'PQQ' label does not tell you what you are getting.
- 20 mg per day is the studied dose across the sleep, cognition, and mild-cognitive-impairment trials, and the level EFSA assessed. There is no evidence that 40 or 60 mg does more; it is simply an unstudied dose at a higher price.
- Third-party testing is the single most useful quality signal for PQQ. The ingredient is expensive and undetectable by the consumer, which makes underdosing economically attractive and practically invisible.
- Demand a finished-product certificate of analysis from an outside lab, lot-matched, showing measured potency and heavy metals. A raw-material supplier COA describes a barrel of powder, not your bottle.
- PQQ is hygroscopic and light-sensitive, so it wants an opaque bottle, a tight seal, and a desiccant. Clear bottles and gummy formats are a poor fit for this compound.
- In PQQ plus CoQ10 combos, check the CoQ10 dose. Many deliver 30 to 50 mg alongside a full 20 mg of PQQ, well under the 100 to 200 mg range CoQ10 was studied at. Buying the two separately is often cheaper and always clearer.
- 'Vitamin B14' on a label is a red flag about the company. That claim came from a 2003 Nature paper rebutted twice in the same journal in 2005.
The short answer
A good PQQ supplement is boring. It contains PQQ disodium salt at 20 mg, in an opaque bottle, from a company that will show you an independent certificate of analysis. That is most of the decision. PQQ is one of the priciest ingredients per gram in the mitochondrial category, it is hygroscopic and light-sensitive, and the market is full of blends that bury a token dose inside a proprietary matrix. The things that actually separate products here are form, verified potency, and packaging, not branding.
Before you buy anything, read what the human evidence on PQQ actually shows. It is thinner than the marketing suggests, and that should shape how much you are willing to spend.
Rule one: it has to be PQQ disodium salt
Free-acid PQQ and PQQ disodium salt are not interchangeable in practice. Essentially every human trial used the disodium salt, and it is the disodium salt that carries the regulatory paperwork: two FDA GRAS notifications with no-questions letters, and a European Food Safety Authority novel-food assessment at up to 20 mg per day. The free acid has neither the trial record nor the stability profile.
On a label this appears as “pyrroloquinoline quinone disodium salt” or “PQQ disodium salt.” If a product just says “PQQ 20 mg” with no salt form specified, you do not know what you are buying, and you also do not know whether that 20 mg refers to the salt or to the PQQ it contains, which are slightly different numbers.
BioPQQ, MGCPQQ, and generic material
BioPQQ is the branded ingredient from Mitsubishi Gas Chemical, produced by fermentation rather than chemical synthesis. It is the material used in most of the published human trials, including the 2016 cognitive study and the sleep and fatigue work. MGCPQQ is the same company’s designation for the European market after its novel-food authorization.
That does not make branded material automatically better than generic synthetic PQQ, and there is no head-to-head trial showing it is. What it gives you is traceability: you know where the raw material came from and that the specific ingredient has been through a regulatory dossier. Generic PQQ can be perfectly good, and it is usually cheaper, but with an ingredient this expensive the incentive to cut it is real, which brings us to the part that matters most.
Third-party testing is the whole ballgame here
PQQ costs manufacturers substantially more per capsule than the commodity ingredients it sits next to on a shelf. Whenever an ingredient is expensive and cannot be identified by taste, smell, or appearance, underdosing becomes economically attractive and practically invisible. That is the situation PQQ is in.
What to insist on:
- An independent certificate of analysis for the finished product, tested by an outside lab, confirming identity and actual measured potency in milligrams per capsule. Not the raw-material supplier’s COA, which tells you about a barrel of powder, not about what ended up in your bottle.
- Heavy-metal screening on that same COA. Standard practice, and its absence tells you something about how the company operates.
- Certification from a real third-party program (NSF, USP, Informed Choice) rather than a self-issued “lab tested” seal designed on the same laptop as the label.
- A lot number and expiry date you can match to a published COA. A COA with no lot reference is decoration.
PQQ is more stable than a genuinely fragile active like astaxanthin, which oxidizes and loses potency in the bottle, so freshness is a smaller worry here. But PQQ is hygroscopic and light-sensitive, so it does want an opaque container, a tight seal, and a desiccant. Clear bottles and loose gummy formats are a bad sign for this particular compound. If a product is a PQQ gummy, assume potency is unverified unless proven otherwise.
⚠ CLAIM (wellness): Independent potency and heavy-metal verification is the single most useful quality signal for PQQ, because the ingredient is expensive, undetectable by the consumer, and sold in a market with no pre-market potency enforcement in the United States. This is a purchasing-quality statement, not a claim that any tested product produces a health effect. Lane: educational.
Why 20 mg, and what “PQQ 20 mg” means
Twenty milligrams per day is not a marketing number. It is the dose used in the sleep and fatigue study, the cognition study, and the recent mild cognitive impairment trial, and it is the level EFSA assessed as safe for daily consumption. The 2013 inflammation study used 0.3 mg per kilogram of body weight, which lands near the same place for a typical adult.
There is no evidence that more than 20 mg does more. There is also no dose-ranging trial in humans establishing that 20 mg is optimal rather than simply the number everyone settled on. Products offering 40 or 60 mg are not offering you a better-studied dose, they are offering you an unstudied one at a higher price. This is educational information, not a dosing recommendation.
PQQ and CoQ10 combination products
Most PQQ on the market is sold as a PQQ plus CoQ10 combination, and the pairing makes mechanistic sense: PQQ is proposed to help build mitochondria, CoQ10 supports the electron transport chain inside the ones you already have. We work through whether that stack is actually worth it in PQQ vs CoQ10.
If you do buy a combination, the failure mode is almost always the CoQ10 side. Combination products routinely deliver a full 20 mg of PQQ next to 30 to 50 mg of CoQ10, which is well below the 100 to 200 mg range used in most CoQ10 research. You end up paying for a real PQQ dose and a decorative CoQ10 dose. Check both numbers against what each compound was actually studied at, and see our CoQ10 buying guide for what a serious CoQ10 dose looks like. If the combo underdoses CoQ10, buying the two separately is usually cheaper and always cleaner.
Quick label check
| What to check | Green flag | Red flag |
|---|---|---|
| Form | “PQQ disodium salt” stated explicitly | Bare “PQQ,” or free acid with no trial record |
| Dose | 20 mg, matching the studied level | 40 to 60 mg “extra strength,” or an undisclosed amount in a blend |
| Testing | Finished-product COA from an outside lab, lot-matched, with heavy metals | “Lab tested” badge with no document, or supplier COA only |
| Packaging | Opaque bottle, tight seal, desiccant | Clear bottle, gummies, loose pouches |
| Blend structure | Single ingredient, or a combo with every dose disclosed | “Proprietary mitochondrial blend” with no per-ingredient amounts |
| CoQ10 in a combo | 100 mg or more, matching CoQ10’s own evidence base | 30 to 50 mg token dose alongside full-strength PQQ |
| Label claims | Plain description of the ingredient | “Vitamin B14,” disease claims, “exercise in a pill” |
The “vitamin B14” tell
If a product markets PQQ as vitamin B14 or “the newest B vitamin,” treat that as a signal about the company rather than about the ingredient. That claim traces to a single 2003 paper in Nature that was rebutted twice in the same journal in 2005, and no PQQ-dependent enzyme has been confirmed in humans since. A brand still printing it in 2026 is either not reading the literature or is counting on you not to. Neither is what you want from the people measuring your capsules.
What a sensible purchase looks like
Plain PQQ disodium salt, 20 mg per capsule, opaque bottle, published lot-matched third-party COA, no proprietary blend, no vitamin claims on the front. If you want CoQ10 alongside it, buy a properly dosed CoQ10 separately rather than accepting whatever a combination product tucked in. Expect to pay meaningfully more per month than you would for a commodity like taurine or creatine, and go in knowing that the human evidence behind PQQ does not yet justify treating it as a staple. It belongs in the experimental tier of our evidence-graded supplement guide, not the foundation tier.
Before starting, it is worth reading the safety picture, particularly the kidney question, since that is the one area where PQQ has a signal worth understanding rather than dismissing.
Educational information only, not medical advice, and not evaluated by the FDA. PQQ is not a treatment for any disease, and nothing here is a dosing protocol. We do not sell supplements and this guide names no brands. Talk to a clinician before supplementing, particularly if you have reduced kidney function, are pregnant or breastfeeding, or take prescription medication.
Frequently asked questions
What should I look for in a PQQ supplement?
Five things, in order. First, PQQ disodium salt stated explicitly on the label rather than a bare 'PQQ.' Second, 20 mg per serving, the dose used in the human trials. Third, a lot-matched third-party certificate of analysis for the finished product covering measured potency and heavy metals. Fourth, an opaque, well-sealed container, because PQQ is hygroscopic and light-sensitive. Fifth, full dose disclosure rather than a proprietary blend. Everything else, including branding and 'advanced delivery' claims, is noise.
Is BioPQQ better than generic PQQ?
There is no head-to-head trial showing it is. BioPQQ is Mitsubishi Gas Chemical's fermentation-derived branded PQQ disodium salt, and it is the material used in most published human studies, sold in Europe as MGCPQQ. What that buys you is traceability and a documented regulatory dossier, not proven superiority. Generic synthetic PQQ disodium salt can be perfectly good and is usually cheaper. With an ingredient this expensive, what matters more than the brand of raw material is whether the finished product has been independently tested for actual potency.
How much PQQ should I take, and is 20 mg the right amount?
Twenty milligrams per day is the amount used in the sleep and fatigue study, the 12-week cognition study, and the recent mild cognitive impairment trial, and it is the level the European Food Safety Authority assessed as safe for daily consumption. It is the studied dose rather than a proven optimal one, since no human dose-ranging trial exists. Products offering 40 or 60 mg are not giving you more evidence, they are giving you less. This is educational information, not a dosing protocol; talk to a clinician.
Should I buy a PQQ and CoQ10 combination?
Only if both doses are honest. The pairing is mechanistically sensible, since PQQ is proposed to support building mitochondria while CoQ10 supports the electron transport chain in existing ones, but no rigorous human trial shows the combination beats either alone. The common problem is that combination products pair a full 20 mg of PQQ with 30 to 50 mg of CoQ10, which is far below the 100 to 200 mg used in most CoQ10 research. Check both numbers. If the CoQ10 side is a token dose, buying the two separately is usually cheaper.
Are PQQ gummies any good?
They are a poor format for this particular ingredient. PQQ is hygroscopic and light-sensitive, and gummies expose it to moisture, heat during manufacture, and often clear or semi-transparent packaging. Gummies also carry more formulation variability in general. Nothing makes a gummy inherently useless, but you should treat the stated potency as unverified unless the company publishes a finished-product certificate of analysis on that specific lot, which is rare in the gummy category.
Why is PQQ so expensive?
PQQ is produced by fermentation or multi-step synthesis at far lower volumes than commodity nutrients, and the raw material costs manufacturers considerably more per gram than something like taurine or creatine. That price gap is exactly why independent potency testing matters here: an ingredient that is costly, present in milligram quantities, and impossible for a consumer to detect is the classic profile for quiet underdosing.
Does PQQ need to be taken with food?
There is no strong evidence either way. PQQ disodium salt is water-soluble and the human trials generally dosed it with a meal, which is a reasonable default, but no study has compared fed against fasted administration. Some people report mild stomach upset on an empty stomach, which is the practical argument for taking it with food. Timing appears to be preference rather than pharmacology.
References
- 1.EFSA Panel on Dietetic Products, Nutrition and Allergies. Safety of pyrroloquinoline quinone disodium salt as a novel food pursuant to Regulation (EC) No 258/97. EFSA Journal. 2017;15(11):5058.
- 2.US FDA. GRAS Notice No. 709: pyrroloquinoline quinone disodium salt (no-questions letter).
- 3.US FDA. GRAS Notice No. 701: pyrroloquinoline quinone disodium salt (no-questions letter).
- 4.Itoh Y, Hine K, Miura H, et al. Effect of the antioxidant supplement pyrroloquinoline quinone disodium salt (BioPQQ) on cognitive functions. Adv Exp Med Biol. 2016;876:319-325.
- 5.Nakano M, Yamamoto T, Okamura H, Tsuda A, Kowatari Y. Effects of oral supplementation with pyrroloquinoline quinone on stress, fatigue, and sleep. Funct Foods Health Dis. 2012;2(8):307-324.
- 6.Harris CB, Chowanadisai W, Mishchuk DO, et al. Dietary pyrroloquinoline quinone (PQQ) alters indicators of inflammation and mitochondrial-related metabolism in human subjects. J Nutr Biochem. 2013;24(12):2076-2084.
- 7.Nakano M, Ubukata K, Yamamoto T, Yamaguchi H. Acute and subchronic toxicity studies of pyrroloquinoline quinone (PQQ) disodium salt (BioPQQ) in rats. Regul Toxicol Pharmacol. 2014;70(1):107-121.
- 8.Felton LM, Anthony C. Biochemistry: role of PQQ as a mammalian enzyme cofactor? Nature. 2005;433(7025):E10.