PlainVitamins

Slow-Mag

by Purdue Products L.P. · tablet or pill · 60 tablets

  • Off the market since January 2016 (NIH)
  • DSLD label 15962
  • Serving 2 tablets
  • 30 servings

Slow-Mag by Purdue Products L.P. lists 3 ingredients, 3 with an amount per serving of 2 tablets, such as 238 mg of calcium, 143 mg of magnesium and 405 mg of chloride, beside 1 Nutrition Facts row (calories, fat and the like). Its current label entered the NIH Dietary Supplement Label Database on November 21, 2012.

What is in Slow-Mag?

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

Slow-Mag: Supplement Facts rows against the market (DSLD label 15962, January 2026 release)
IngredientAmount% DVAmong products listing it
Calcium238 mg24%Calcium in Slow-Mag against 17,831 products238 mg per serving; the middle half of products list 50 mg to 252 mg, the median 115 mg.DV 1,300 mgUL 2,500 mg238 mg

Higher than 72% of 17,831 products listing calcium (median 115 mg). Per day at the most servings: 476 mg.

Magnesium143 mg36%Magnesium in Slow-Mag against 14,003 products143 mg per serving; the middle half of products list 30 mg to 200 mg, the median 86 mg.UL 350 mgDV 420 mg143 mg

Higher than 69% of 14,003 products listing magnesium (median 86 mg). Per day at the most servings: 286 mg.

Chloride405 mg12%Chloride in Slow-Mag against 1,476 products405 mg per serving; the middle half of products list 60 mg to 183.5 mg, the median 75 mg.DV 2,300 mgUL 3,600 mg405 mg

Higher than 91% of 1,476 products listing chloride (median 75 mg). Per day at the most servings: 810 mg.

Sodium5 mg1%Sodium in Slow-Mag against 14,514 products5 mg per serving; the middle half of products list 15 mg to 142 mg, the median 55 mg.5 mg

89% of 14,514 products listing sodium give more (median 55 mg). Per day at the most servings: 10 mg.

Source: NIH ODS Dietary Supplement Label Database, label 15962 (entered November 21, 2012), 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 405 mg of chloride is higher than 91% of the 1,476 chloride products that print an amount; 134 list more.

The NIH database records 1 to 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 Slow-Mag'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: As a dietary supplement, take 2 tablets once or twice a day or as directed by your physician.

Source: label statements in DSLD label 15962.

What else is on the label?

Other ingredients: Magnesium chloride, Calcium Carbonate, Hypromellose Phthalate, Microcrystalline Cellulose, Talc, Titanium Dioxide, Triacetin, Croscarmellose Sodium, Stearic Acid, Povidone, Acacia, Maltodextrin, Magnesium Stearate, Hypromellose, Shellac, FD&C Blue #2 Aluminum Lake, mineral oil, Propylene Glycol.

How many labels does Slow-Mag have?

One label is on file, entered on November 21, 2012.

  1. Label 15962 (current) Entered November 21, 2012 · off the market January 21, 2016 · 60 tablets

DSLD also links this label to: Slow-Mag Tablets (image difference, same product).

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

Who makes it?

The label names Purdue Products L.P. (distributor), Stamford, CT. All Purdue Products L.P. products.

Where next?