PlainVitamins

MasterMind

by Zahler · tablet or pill · 120 tablets

  • On the market (NIH)
  • DSLD label 33306
  • Serving 4 tablets
  • 30 servings

MasterMind by Zahler lists 7 ingredients, 7 with an amount per serving of 4 tablets, such as 500 mg of SAMe, 200 mg of 5-htp, 1,400 mg of L-tryptophan and 70 mg of niacin. Its current label entered the NIH Dietary Supplement Label Database on May 23, 2014.

What is in MasterMind?

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

MasterMind: Supplement Facts rows against the market (DSLD label 33306, January 2026 release)
IngredientAmount% DVAmong products listing it
SAMe500 mgSAMe in MasterMind against 163 products500 mg per serving; the middle half of products list 200 mg to 400 mg, the median 200 mg.500 mg

Higher than 95% of 163 products listing SAMe (median 200 mg). Per day at the most servings: 1,000 mg.

5-Htpas Griffonia simplicifolia200 mg5-HTP in MasterMind against 676 products200 mg per serving; the middle half of products list 50 mg to 100 mg, the median 100 mg.200 mg

Higher than 88% of 676 products listing 5-HTP (median 100 mg). Per day at the most servings: 400 mg.

L-Tryptophan1,400 mgTryptophan in MasterMind against 605 products1,400 mg per serving; the middle half of products list 55 mg to 471 mg, the median 123 mg.1,400 mg

Higher than 98% of 605 products listing tryptophan (median 123 mg). Per day at the most servings: 2,800 mg.

Niacinas Niacinamide70 mg350%Niacin in MasterMind against 12,413 products70 mg per serving; the middle half of products list 13.2 mg to 48 mg, the median 20 mg.DV 16 mgUL 35 mg70 mg

Higher than 85% of 12,413 products listing niacin (median 20 mg). Per day at the most servings: 140 mg. 4 times the adult UL a day.

Vitamin B6as Pyridoxine Hydrochloride70 mg3,500%Vitamin B6 in MasterMind against 15,277 products70 mg per serving; the middle half of products list 2 mg to 20 mg, the median 6 mg.DV 1.7 mgUL 100 mg70 mg

Higher than 94% of 15,277 products listing vitamin B6 (median 6 mg). Per day at the most servings: 140 mg. 1.4 times the adult UL a day.

Folic Acid990 mcg250%Folate in MasterMind against 7,022 products990 mcg per serving; the middle half of products list 200 mcg to 400 mcg, the median 400 mcg.990 mcg

Higher than 93% of 7,022 products listing folate (median 400 mcg). Per day at the most servings: 1,980 mcg.

Vitamin B12as Methylcobalamin1,600 mcg26,670%Vitamin B12 in MasterMind against 14,425 products1,600 mcg per serving; the middle half of products list 6 mcg to 200 mcg, the median 36 mcg.DV 2.4 mcg1,600 mcg

Higher than 96% of 14,425 products listing vitamin B12 (median 36 mcg). Per day at the most servings: 3,200 mcg.

Source: NIH ODS Dietary Supplement Label Database, label 33306 (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:

  • Its 500 mg of SAMe is higher than 95% of the 163 SAMe products that print an amount; 6 list more.
  • Its 1,400 mg of L-tryptophan (filed by NIH under tryptophan) is higher than 98% of the 605 tryptophan products that print an amount; 14 list more.
  • At 2 servings a day, the most its directions give, the label lists 140 mg of niacin, 4 times the adult Tolerable Upper Intake Level.
  • At 2 servings a day, the most its directions give, the label lists 140 mg of vitamin B6, 1.4 times the adult Tolerable Upper Intake Level.
  • Its 990 mcg of folic acid (filed by NIH under folate) is higher than 93% of the 7,022 folate products that print an amount; 492 list more.
  • Its 1,600 mcg of vitamin B12 is higher than 96% of the 14,425 vitamin B12 products that print an amount; 637 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 MasterMind'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: 2 capsules 2 times daily with meals or as directed by a health care practitioner.
Warnings
KEEP OUT OF REACH OF CHILDREN.
Zahler(R) MasterMind(TM) does NOT interfere with prescription medications and may be used simultaneously while the drugs are gradually phased out under medical supervision.
Storage
STORE TIGHTLY IN COOL, DRY PLACE.

Source: label statements in DSLD label 33306.

What else is on the label?

Other ingredients: Stearic Acid, Dicalcium Phosphate, Microcrystalline Cellulose, Magnesium Stearate, Croscarmellose Sodium, Silicon Dioxide, Glyceryl Triacetate, Hydroxypropyl Methyl Cellulose Pthalate, Ethanol, Water, Titanium Dioxide.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): advanced nutrition by ZAHLER(R); TRIPLE CERTIFIED FORMULA; MIND & SPIRIT {capsule}; D U.

How many labels does MasterMind have?

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

  1. Label 33306 (current) Entered May 23, 2014 · on the market · 120 tablets

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?