PlainVitamins

200 mg of Zen

by Allergy Research Group · capsule · 60 vegetarian capsules

  • On the market (NIH)
  • UPC 7 13947 74700 5
  • DSLD label 304223
  • Serving 1 to 2 capsules; amounts per 2 capsules
  • 30 servings

200 mg of Zen by Allergy Research Group lists 2 ingredients, 2 with an amount per serving of 2 capsules, such as 550 mg of gamma-aminobutyric acid and 200 mg of L-theanine. Its current label entered the NIH Dietary Supplement Label Database on March 22, 2024.

What is in 200 mg of Zen?

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

200 mg of Zen: Supplement Facts rows against the market (DSLD label 304223, January 2026 release)
IngredientAmount% DVAmong products listing it
Gamma-Aminobutyric Acid550 mgGABA in 200 mg of Zen against 744 products550 mg per serving; the middle half of products list 80 mg to 400 mg, the median 100 mg.550 mg

Higher than 86% of 744 products listing GABA (median 100 mg).

L-Theanine200 mgTheanine in 200 mg of Zen against 1,602 products200 mg per serving; the middle half of products list 90 mg to 200 mg, the median 100 mg.200 mg

Higher than 61% of 1,602 products listing theanine (median 100 mg).

Source: NIH ODS Dietary Supplement Label Database, label 304223 (entered March 22, 2024), 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?

Every amount on this label with a position sits within the middle 80% of the products that list the same ingredient.

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?

6 products list the very same ingredients; the nearest amounts come first.

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, 1 or 2 capsules daily between meals, or as directed by a healthcare practitioner.
Warnings
Warning: If taking antidepressants or other psychotropic medications, use only under the supervision of a qualified healthcare practitioner.
Although we are not aware of any interactions, because these also affect brain function there is theoretical potential for negative or positive interactions, either of which would need to be monitored.
Storage
Keep in a cool, dry place, tightly capped.

Source: label statements in DSLD label 304223.

What else is on the label?

Other ingredients: Hydroxypropyl Methylcellulose, Microcrystalline Cellulose, Rice Hull Concentrate, Gum Arabic, Sunflower Oil.

How many labels does 200 mg of Zen have?

14 labels are on file under this name since March 25, 2013: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 304223 (current) Entered March 22, 2024 · on the market · 60 vegetarian capsules · UPC 7 13947 74700 5
  2. Label 257954 Entered October 22, 2021 · on the market · 60 vegetarian capsules · UPC 7 13947 74700 5
  3. Label 257949 Entered October 22, 2021 · on the market · 120 vegetarian capsules · UPC 7 13947 76650 1
  4. Label 257943 Entered October 22, 2021 · on the market · 120 vegetarian capsules · UPC 7 13947 76650 1
  5. Label 233435 Entered August 23, 2020 · off the market August 2, 2021 · 60 vegetarian capsules · UPC 7 13947 74700 5
  6. Label 233299 Entered August 23, 2020 · off the market August 2, 2021 · 120 vegetarian capsules · UPC 7 13947 76650 1
  7. Label 206989 Entered October 23, 2019 · off the market August 4, 2020 · 60 vegetarian capsules · UPC 7 13947 74700 5
  8. Label 184237 Entered February 25, 2019 · off the market August 4, 2020 · 120 vegetarian capsules · UPC 7 13947 76650 1
  9. Label 183567 Entered February 25, 2019 · off the market June 26, 2019 · 60 vegetarian capsules · UPC 7 13947 74700 5
  10. Label 79285 Entered October 21, 2017 · off the market July 19, 2018 · 120 vegetarian capsules · UPC 7 13947 76650 1
  11. Label 79065 Entered October 21, 2017 · off the market July 19, 2018 · 60 vegetarian capsules · UPC 7 13947 74700 5
  12. Label 55914 Entered January 25, 2016 · off the market July 31, 2017 · 120 vegetarian capsules · UPC 7 13947 76650 1
  13. Label 54124 Entered December 23, 2015 · off the market July 31, 2017 · 60 vegetarian capsules · UPC 7 13947 74700 5
  14. Label 20125 Entered March 25, 2013 · off the market November 18, 2015 · 60 vegetarian capsules · UPC 7 13947 74700 5

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

Who makes it?

The label names Allergy Research Group (distributor), South Salt Lake, UT. All Allergy Research Group products.

Where next?