Zma
by Bodybuilding.com Signature · capsule · 90 capsules
- On the market (NIH)
- UPC 8 53002 00748 1
- DSLD label 207699
- Serving 2 to 3 capsules; amounts per 3 capsules
- 30 servings
Zma by Bodybuilding.com Signature lists 3 ingredients, 3 with an amount per serving of 3 capsules, such as 10.5 mcg of vitamin B6, 450 mg of magnesium and 30 mg of zinc mono-L-methionine sulfate. Its current label entered the NIH Dietary Supplement Label Database on October 23, 2019.
What is in Zma?
Each row as the label prints it, per serving of 3 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).
| Ingredient | Amount | % DV | Among products listing it |
|---|---|---|---|
| Vitamin B6as Pyridoxine HydrochlorideVitamin B6 (Form: as Pyridoxine HCl) | 10.5 mcg | 618% | This amount is far outside what other labels list for vitamin B6, or disagrees with the label's own %DV: possibly a unit or transcription slip in the database. Check the label image on DSLD. |
| Magnesiumas Magnesium AspartateMagnesium (Form: as Magnesium Aspartate) | 450 mg | 107% | Higher than 95% of 14,003 products listing magnesium (median 86 mg). 1.3 times the adult UL a day. |
| Zinc Mono-L-Methionine SulfateZinc (Form: as Zinc Mono-L-Methionine, and Zinc Aspartate) | 30 mg | 273% | The label names the compound (Zinc Mono-L-Methionine Sulfate); its amount is likely the compound's weight, not the zinc it holds, so it is not placed among other products. |
Source: NIH ODS Dietary Supplement Label Database, label 207699 (entered October 23, 2019), 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 1 serving a day, the most its directions give, the label lists 450 mg of magnesium, 1.3 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?
6 products list the very same ingredients; the nearest amounts come first.
- Xtreme ZMAXPI Xtreme Pharmaceutical Innovations · off the market same ingredients
- ZmaSwanson Ultra · off the market same ingredients
- ZmaPrecision Engineered · off the market same ingredients
- ZMA Mineral Support FormulaGood 'N Natural · off the market same ingredients
- ZmaScientific Nutrition For Advanced Conditioning SNAC · off the market same ingredients
- ZMA With OptizincPrecision Engineered same ingredients
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 for Use: Take 3 Signature ZMA capsules daily for men and 2 capsules daily for women. Take 30-60 minutes before bedtime, preferably on an empty stomach.
- Warnings
- Warnings: Consult your physician before using this product if you're taking any medications or are under a physician's care for a medical condition. Not for use by those under the age of 18 or by women that are pregnant, trying to get pregnant or nursing.
- Not for use by those under the age of 18 or by women that are pregnant, trying to get pregnant or nursing.
- Allergens and what it does not contain
- Every product is transparent, filler-free, and formulated with effective doses of research-backed ingredients you can trust.
Source: label statements in DSLD label 207699.
What else is on the label?
Other ingredients: Gelatin, Rice Flour, Magnesium Stearate.
How many labels does Zma have?
One label is on file, entered on October 23, 2019.
- Label 207699 (current) Entered October 23, 2019 · on the market · 90 capsules · UPC 8 53002 00748 1
Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).
Who makes it?
The label names Bodybuilding.com (distributor), Boise, ID. All Bodybuilding.com Signature products.