PlainVitamins

PQQ Plus

by Douglas Laboratories · capsule · 30 vegetarian capsules

  • On the market (NIH)
  • UPC 3 10539 03479 8
  • DSLD label 232280
  • Serving 1 vegetarian capsule
  • 30 servings

PQQ Plus by Douglas Laboratories lists 2 ingredients, 2 with an amount per serving of 1 vegetarian capsule, such as 20 mg of BioPQQ and 50 mg of alpha GPC. Its current label entered the NIH Dietary Supplement Label Database on August 23, 2020.

What is in PQQ Plus?

Each row as the label prints it, per serving of 1 vegetarian capsule. The capsule beside an amount places it among every product in the NIH database that lists the same ingredient: the bar is the middle half of their amounts, the line in it the median, the whiskers the 10th and 90th percentiles; the green tick is the FDA Daily Value and the red dashed tick the adult upper limit (IOM).

PQQ Plus: Supplement Facts rows against the market (DSLD label 232280, January 2026 release)
IngredientAmount% DVAmong products listing it
BioPQQas Pyrroloquinoline Disodium SaltBioPQQ (Form: as Pyrroloquinoline Disodium Salt)20 mgPyrroloquinoline Quinone in PQQ Plus against 168 products20 mg per serving; the middle half of products list 10 mg to 20 mg, the median 10 mg.20 mg

Higher than 54% of 168 products listing pyrroloquinoline quinone (median 10 mg).

Alpha GPCas SoyAlpha GPC (Form: from Soy) (Alt. Name: Alpha Glycerylphosphorylcholine)50 mgAlpha-GPC in PQQ Plus against 656 products50 mg per serving; the middle half of products list 150 mg to 300 mg, the median 200 mg.50 mg

89% of 656 products listing alpha-GPC give more (median 200 mg).

Source: NIH ODS Dietary Supplement Label Database, label 232280 (entered August 23, 2020), version 9.4.0. See the label on DSLD. Amounts are what the maker printed; DSLD does not test products. Daily Values: the FDA's Daily Value page.

Is that a lot?

The rows in the top or bottom tenth of the products that list the same ingredient, and any above the adult upper limit at the most servings a day the directions give:

  • 89% of the 656 products that print an amount of alpha-GPC list more than its 50 mg of alpha GPC (filed by NIH under alpha-GPC) (median 200 mg).

The NIH database records one serving a day from the label's directions; its % Daily Values are for adults and children 4 or more years of age. The directions as printed are further down this page.

The Tolerable Upper Intake Level is the most of a nutrient per day, from food, water and supplements together, that is likely to pose no risk for almost all adults (Institute of Medicine, 2011). It does not apply under medical supervision. This page compares labels; it is not medical advice.

Sources: amounts from the DSLD label; Daily Values from 21 CFR 101.9(c)(8)(iv); adult upper limits from the Institute of Medicine's DRI summary tables (2011). How positions are computed.

Which products have the closest formulas?

The products whose ingredient lists overlap most with PQQ Plus's, rare ingredients counting for more.

Source: ingredient lists of every product's current label in DSLD (version 9.4.0); similarity weights each shared ingredient by how rare it is.

What does the label say about taking it?

Quoted from the label as DSLD transcribed it: the maker's words, including any claim about what the product does, which the FDA has not evaluated and PlainVitamins does not endorse.

Directions
Suggested Usage: As a dietary supplement, adults take 1 capsule daily or as directed by your healthcare professional.
Warnings
Warning: If you are pregnant, nursing, have any health condition or taking any medication, consult your healthcare professional before using this product.
Keep out of reach of children.
Use only if safety seal is intact.
Contains soy
Allergens and what it does not contain
Gluten-free, Non-GMO
Storage
Store in a cool, dry place.

Source: label statements in DSLD label 232280.

What else is on the label?

Other ingredients: Cellulose, Hydroxypropyl Methylcellulose, Vegetable Stearate, Silica.

How many labels does PQQ Plus have?

4 labels are on file under this name since January 25, 2012: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 232280 (current) Entered August 23, 2020 · on the market · 30 vegetarian capsules · UPC 3 10539 03479 8
  2. Label 57272 Entered March 24, 2016 · off the market May 18, 2020 · 30 vegetarian capsules · UPC 3 10539 03479 8
  3. Label 10613 Entered July 25, 2012 · off the market December 15, 2015 · 30 vegetarian capsules · UPC 3 10539 03479 8
  4. Label 5211 Entered January 25, 2012 · off the market January 20, 2012 · 30 Vegetarian Capsules · UPC 3 10539 03479 8

Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).

Who makes it?

The label names Douglas Laboratories (manufacturer), Pittsburgh, PA. All Douglas Laboratories products.

Where next?