PlainVitamins

CoQ-10 ZEN

by Natural Rhythm · capsule · 30 capsules

  • On the market (NIH)
  • UPC 7 64804 31745 9
  • DSLD label 271240
  • Serving 1 vegetable capsule
  • 30 servings

CoQ-10 ZEN by Natural Rhythm lists 3 ingredients, 3 with an amount per serving of 1 vegetable capsule, such as 15 mg of L-theanine, 125 mg of L-carnitine and 100 mg of coenzyme Q10. Its current label entered the NIH Dietary Supplement Label Database on June 16, 2022.

What is in CoQ-10 ZEN?

Each row as the label prints it, per serving of 1 vegetable 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).

CoQ-10 ZEN: Supplement Facts rows against the market (DSLD label 271240, January 2026 release)
IngredientAmount% DVAmong products listing it
L-Theanine15 mgTheanine in CoQ-10 ZEN against 1,602 products15 mg per serving; the middle half of products list 90 mg to 200 mg, the median 100 mg.15 mg

98% of 1,602 products listing theanine give more (median 100 mg).

L-Carnitineas L-Carnitine Tartrate125 mgL-Carnitine in CoQ-10 ZEN against 1,338 products125 mg per serving; the middle half of products list 110.5 mg to 1,000 mg, the median 500 mg.125 mg

74% of 1,338 products listing L-carnitine give more (median 500 mg).

Coenzyme Q10100 mgCoenzyme Q-10 in CoQ-10 ZEN against 2,922 products100 mg per serving; the middle half of products list 30 mg to 100 mg, the median 60 mg.100 mg

Higher than 54% of 2,922 products listing coenzyme Q-10 (median 60 mg).

Source: NIH ODS Dietary Supplement Label Database, label 271240 (entered June 16, 2022), version 9.4.0. See the label on DSLD or its label image (PDF). 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:

  • 98% of the 1,602 products that print an amount of theanine list more than its 15 mg of L-theanine (filed by NIH under theanine) (median 100 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 CoQ-10 ZEN'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 use: As a dietary supplement, take 1 capsule daily with a meal, or as directed by your healthcare practitioner.
Warnings
Caution: Discontinue use 2 weeks prior to surgery.
Warning: If pregnant or nursing, consult your healthcare practitioner before taking this product.
Keep out of reach of children.
Allergens and what it does not contain
Gluten free
Non-GMO ingredients
No Gluten, soy, milk, preservatives, or animal products. Formulated without eggs, fish, shellfish, tree nuts, peanuts, or wheat. Yay!!
Storage
Store in a cool, dry place.

Source: label statements in DSLD label 271240.

What else is on the label?

Other ingredients: Hypromellose, Microcrystalline Cellulose, vegetarian Leucine.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): GMP Good Manufacturing Practice Quality Product.

How many labels does CoQ-10 ZEN have?

One label is on file, entered on June 16, 2022.

  1. Label 271240 (current) Entered June 16, 2022 · on the market · 30 capsules · UPC 7 64804 31745 9

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

Who makes it?

The label names Natural Rhythm (distributor), Keller, Texas. All Natural Rhythm products.

Where next?