PlainVitamins

AdultFocus

by Zahler · capsule · 120 capsules

  • Off the market since September 2021 (NIH)
  • UPC 8 48998 00052 3
  • DSLD label 33226
  • Serving 2 capsules; amounts per 4 capsules
  • 30 servings

AdultFocus by Zahler lists 12 ingredients, 12 with an amount per serving of 4 capsules, such as 250 mg of magnesium, 400 mg of quercetin, 400 mg of dimethylglycine HCl and 400 mg of gamma amino butyric acid. Its current label entered the NIH Dietary Supplement Label Database on May 23, 2014.

What is in AdultFocus?

Each row as the label prints it, per serving of 4 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).

AdultFocus: Supplement Facts rows against the market (DSLD label 33226, January 2026 release)
IngredientAmount% DVAmong products listing it
Magnesiumas Magnesium Citrate250 mg63%Magnesium in AdultFocus against 14,003 products250 mg per serving; the middle half of products list 30 mg to 200 mg, the median 86 mg.UL 350 mgDV 420 mg250 mg

Higher than 83% of 14,003 products listing magnesium (median 86 mg). Per day at the most servings: 500 mg. 1.4 times the adult UL a day.

Quercetinas Quercetin DihydrateQuercetin (Form: as Quercetin Dihydrate)400 mgQuercetin in AdultFocus against 1,548 products400 mg per serving; the middle half of products list 26.5 mg to 250 mg, the median 100 mg.400 mg

Higher than 83% of 1,548 products listing quercetin (median 100 mg). Per day at the most servings: 800 mg.

Dimethylglycine HCl400 mgDimethylglycine in AdultFocus against 157 products400 mg per serving; the middle half of products list 80 mg to 300 mg, the median 125 mg.400 mg

Higher than 85% of 157 products listing dimethylglycine (median 125 mg). Per day at the most servings: 800 mg.

Gamma Amino Butyric Acid400 mgGABA in AdultFocus against 744 products400 mg per serving; the middle half of products list 80 mg to 400 mg, the median 100 mg.400 mg

Higher than 74% of 744 products listing GABA (median 100 mg). Per day at the most servings: 800 mg.

Ginkgo leaf powder40 mgGinkgo in AdultFocus against 1,339 products40 mg per serving; the middle half of products list 30 mg to 120 mg, the median 60 mg.40 mg

68% of 1,339 products listing ginkgo give more (median 60 mg). Per day at the most servings: 80 mg.

Phosphatidyl Serine300 mgPhosphatidylserine in AdultFocus against 641 products300 mg per serving; the middle half of products list 50 mg to 150 mg, the median 100 mg.300 mg

Higher than 84% of 641 products listing phosphatidylserine (median 100 mg). Per day at the most servings: 600 mg.

Milk Thistle seed extract200 mgMilk Thistle in AdultFocus against 1,277 products200 mg per serving; the middle half of products list 90 mg to 300 mg, the median 175 mg.200 mg

Higher than 51% of 1,277 products listing milk thistle (median 175 mg). Per day at the most servings: 400 mg.

Acetyl-L-Carnitine HCl250 mgAcetyl L-Carnitine in AdultFocus against 933 products250 mg per serving; the middle half of products list 200 mg to 525 mg, the median 500 mg.250 mg

64% of 933 products listing acetyl L-carnitine give more (median 500 mg). Per day at the most servings: 500 mg.

Bacopa monnieri leaf extract175 mgBacopa in AdultFocus against 481 products175 mg per serving; the middle half of products list 100 mg to 300 mg, the median 200 mg.175 mg

52% of 481 products listing bacopa give more (median 200 mg). Per day at the most servings: 350 mg.

Pine bark extract100 mgPine in AdultFocus against 220 products100 mg per serving; the middle half of products list 25 mg to 180 mg, the median 83 mg.100 mg

Higher than 51% of 220 products listing pine (median 83 mg). Per day at the most servings: 200 mg.

Vinpocetine50 mgVinpocetine in AdultFocus against 181 products50 mg per serving; the middle half of products list 5 mg to 15 mg, the median 10 mg.50 mg

Higher than 98% of 181 products listing vinpocetine (median 10 mg). Per day at the most servings: 100 mg.

Phosphatidyl Choline25 mgPhosphatidylcholine in AdultFocus against 403 products25 mg per serving; the middle half of products list 35 mg to 420 mg, the median 120 mg.25 mg

80% of 403 products listing phosphatidylcholine give more (median 120 mg). Per day at the most servings: 50 mg.

Source: NIH ODS Dietary Supplement Label Database, label 33226 (entered May 23, 2014), 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:

  • At 2 servings a day, the most its directions give, the label lists 500 mg of magnesium, 1.4 times the adult Tolerable Upper Intake Level.
  • Its 50 mg of vinpocetine is higher than 98% of the 181 vinpocetine products that print an amount; 2 list more.

The NIH database records 2 servings 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 AdultFocus'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
Directions: Take 2 capsules 2 times daily with meals, or as directed by a health care professional.
Warnings
KEEP OUT OF REACH OF CHILDREN.
CONTAINS: SOY
Allergens and what it does not contain
LACTOSE FREE.
Storage
STORE IN A COOL, DRY PLACE.

Source: label statements in DSLD label 33226.

What else is on the label?

Other ingredients: Vegetable Capsule.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): D; U; FREE OF GLUTEN; MADE IN THE USA {flag}; THIS PRODUCT WAS MANUFACTURED IN A GMP CERTIFIED FACILITY; ADVANCED HEALTH {capsule}.

How many labels does AdultFocus have?

One label is on file, entered on May 23, 2014.

  1. Label 33226 (current) Entered May 23, 2014 · off the market September 14, 2021 · 120 capsules · UPC 8 48998 00052 3

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

Who makes it?

The label names Advanced Nutrition by Zahler(R) (distributor), Brooklyn, NY. All Zahler products.

Where next?