PlainVitamins

H2plx

by Priority One Nutritional Supplements · capsule · 90 vegetarian capsules

  • On the market (NIH)
  • UPC 8 15354 02063 1
  • DSLD label 255569
  • Serving 2 vegetarian capsules
  • 45 servings

H2plx by Priority One Nutritional Supplements lists 7 ingredients, 7 with an amount per serving of 2 vegetarian capsules, such as 20,800 IU of vitamin A, 250 mg of vitamin C, 800 mcg of selenium and 10 mg of lithium. Its current label entered the NIH Dietary Supplement Label Database on September 24, 2021.

What is in H2plx?

Each row as the label prints it, per serving of 2 vegetarian capsules. 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).

H2plx: Supplement Facts rows against the market (DSLD label 255569, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin Aas Vitamin A Acetate20,800 IU416%Vitamin A in H2PLX against 5,772 products20,800 IU per serving; the middle half of products list 2,000 IU to 5,000 IU, the median 4,000 IU.20,800 IU

Higher than 96% of 5,772 products listing vitamin A (median 4,000 IU).

Vitamin Cas Ascorbic Acid250 mg417%Vitamin C in H2PLX against 18,583 products250 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg250 mg

Higher than 68% of 18,583 products listing vitamin C (median 100 mg).

Seleniumas Selenium Aspartate, Sodium Selenite800 mcg1,143%Selenium in H2PLX against 7,658 products800 mcg per serving; the middle half of products list 27 mcg to 100 mcg, the median 55 mcg.DV 55 mcgUL 400 mcg800 mcg

Higher than 99% of 7,658 products listing selenium (median 55 mcg). 2 times the adult UL a day.

Lithiumas Lithium Carbonate, Lithium Orotate10 mgLithium in H2PLX against 109 products10 mg per serving; the middle half of products list 0.25 mg to 5 mg, the median 1.5 mg.10 mg

Higher than 85% of 109 products listing lithium (median 1.5 mg).

Lemon Balm extractas Rosemarinic Acid250 mgLemon in H2PLX against 103 products250 mg per serving; the middle half of products list 20 mg to 495 mg, the median 60 mg.250 mg

Higher than 62% of 103 products listing lemon (median 60 mg).

Olive extractas Oleuropein50 mgOlive in H2PLX against 822 products50 mg per serving; the middle half of products list 30 mg to 300 mg, the median 100 mg.50 mg

61% of 822 products listing olive give more (median 100 mg).

L-Lysine Hydrochloride150 mgLysine in H2PLX against 1,250 products150 mg per serving; the middle half of products list 148.25 mg to 996.25 mg, the median 500 mg.150 mg

72% of 1,250 products listing lysine give more (median 500 mg).

Source: NIH ODS Dietary Supplement Label Database, label 255569 (entered September 24, 2021), 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:

  • Its 20,800 IU of vitamin A is higher than 96% of the 5,772 vitamin A products that print an amount; 225 list more.
  • At 1 serving a day, the most its directions give, the label lists 800 mcg of selenium, 2 times the adult Tolerable Upper Intake Level.

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 H2plx'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
Recommendations: Take two (2) capsules daily or as directed by your physician.
Warnings
Warning: Lithium should not be ingested by pregnant women.
Keep out of reach of children.
Consult your physician before using this product.
Allergens and what it does not contain
Contains no preservatives. Bisphenol-A (BPA) & Phthalate Free
Storage
Keep container tightly closed, store in a cool, dry place.

Source: label statements in DSLD label 255569.

What else is on the label?

Other ingredients: Rice Chelate, Maltodextrin, Gum Arabic, Dicalcium Phosphate, DL-Alpha-Tocopherol, Corn Starch, Silicon Dioxide, Vegetarian Capsule.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): GMP Certified.

How many labels does H2plx have?

2 labels are on file under this name since October 23, 2020: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 255569 (current) Entered September 24, 2021 · on the market · 90 vegetarian capsules · UPC 8 15354 02063 1
  2. Label 236741 Entered October 23, 2020 · off the market June 15, 2021 · 90 vegetarian capsules · UPC 8 15354 02063 1

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

Who makes it?

The label names Priority One Nutritional Supplements, Inc. (distributor). All Priority One Nutritional Supplements products.

Where next?