Everything DoseRank tracks on the pqq shelf — Lion's Mane, Docosahexaenoic Acid (DHA) and Pyrroloquinoline Quinone (PQQ). The category itself is never ranked: 93 products get scored the moment you say what you want them to do.
How to read the scores
This legend covers the scores on this page — for data sources, scoring weights, and limits, read the full methodology →
Answer a few questions about your goals, habits, stack, and budget. Then, DoseRank will find the products that best match your needs based on your answers. It's free and only takes 60 seconds! No account is required.
A saved, shareable breakdown: your matched products, dose math, interaction flags to discuss with a clinician, and a price-tracked stack you can revisit.
Questions
Each product gets a composite score blending clinical strength, evidence, dose fit, trust and value — computed for the goal you picked, across this category's products. The #1 on the DoseRank tab has the highest composite; the other tabs re-rank the same products by Value, Trust, or Popularity. Placement is never paid.
Start with a goal, not a brand
Browsing pqq supplements without a goal makes no sense — lion's mane, docosahexaenoic acid (dha) and pyrroloquinoline quinone (pqq) do different jobs, and “best” flips depending on which job you're hiring for. These are the 45 health outcomes that matter for this category. Pick yours, and the full evidence-ranked shelf loads for that goal alone.
MemoryAbility to encode, store, and retrieve information.71 rankedModerate-strong
Female fertilityAbility to conceive through female reproductive capacity.17 rankedLimited
Brain fogSubjective cognitive slowing or reduced mental clarity.6 rankedLimited
Cardiovascular adverse eventUndesired cardiac or vascular side effect.30 rankedLimited
Pregnancy rateFrequency of achieved pregnancies.2 rankedModerate-strong
Inflammation biomarkersLaboratory measures of systemic or local inflammation.68 rankedModerate-strong
Cognitive functionOverall thinking ability including memory, attention, and processing.72 rankedModerate-strong
Sleep qualityOverall restfulness and perceived quality of sleep.62 rankedStrong
Exercise toleranceAbility to continue activity without unacceptable symptoms.8 rankedStrong
Sperm motilityAbility of sperm to move effectively.28 rankedModerate-strong
Antioxidant capacityMeasured ability to counter oxidative stress.67 rankedStrong
Omega-3 indexRed blood cell EPA+DHA content reflecting omega-3 status.9 rankedStrong
Oxidative stress biomarkersLaboratory indicators of oxidative damage or redox imbalance.28 rankedStrong
Dry eye symptomsIrritation, burning, or dryness of the eyes.15 rankedLimited
FatiguePersistent tiredness, low stamina, or lack of energy.74 rankedModerate-strongNothing is ranked yet — the shelf stays locked until you pick a goal.
No goal, no ranking.
A “best pqq supplement” list without a goal would be marketing, not evidence. Pick what you want to improve and DoseRank scores all 93 products against that goal's trials.