Natural Inositol 500 mg
by Rugby · tablet or pill · 100 tablets
- On the market (NIH)
- UPC 0 05363 98401 1
- DSLD label 200815
- Serving 1 tablet
Natural Inositol 500 mg by Rugby lists 2 ingredients, 2 with an amount per serving of 1 tablet, such as 36 mg of calcium and 500 mg of inositol. Its current label entered the NIH Dietary Supplement Label Database on April 25, 2019.
What is in Natural Inositol 500 mg?
Each row as the label prints it, per serving of 1 tablet. 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 |
|---|---|---|---|
| Calcium | 36 mg | 4% | 82% of 17,831 products listing calcium give more (median 115 mg). |
| Inositol | 500 mg | Higher than 93% of 4,042 products listing inositol (median 30 mg). |
Source: NIH ODS Dietary Supplement Label Database, label 200815 (entered April 25, 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:
- Its 500 mg of inositol is higher than 93% of the 4,042 inositol products that print an amount; 199 list more.
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?
The products whose ingredient lists overlap most with Natural Inositol 500 mg's, rare ingredients counting for more.
- Inositol PowderVitamin World 1 shared, 65% alike
- Inositol 650 mgVitamin World 1 shared, 65% alike
- Inositol PowderVitabase 1 shared, 65% alike
- Inositol 500 mgPhysician's Preference · off the market 1 shared, 65% alike
- Inositol Powder 100% PureNOW · off the market 1 shared, 65% alike
- Inositol CapsTwinlab 1 shared, 65% alike
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: Adults: Take one tablet daily.
- Warnings
- Tamper resistant - Do not use if imprinted safety seal under cap is broken or missing
- Keep out of reach of children
- Allergens and what it does not contain
- Free of starch, sugar, sodium, gluten, preservatives, yeast, milk products, artificial colors-flavors.
- Storage
- To preserve quality and freshness, keep bottle tightly closed. Store between 15(0)-30(0)C (59(0)-86(0)F).
Source: label statements in DSLD label 200815.
What else is on the label?
Other ingredients: Dicalcium Phosphate, Microcrystalline Cellulose, Stearic Acid, Polyvinylpyrrolidone, Magnesium Stearate, Croscarmellose Sodium, Silica, Pharmaceutical Glaze, Magnesium Silicate.
How many labels does Natural Inositol 500 mg have?
2 labels are on file under this name since December 24, 2013: other sizes, label designs and reformulations. The current one leads this page.
- Label 200815 (current) Entered April 25, 2019 · on the market · 100 tablets · UPC 0 05363 98401 1
- Label 28307 Entered December 24, 2013 · off the market August 27, 2018 · 100 tablets · UPC 0 0536-3984-01 1
Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).
Who makes it?
The label names Rugby Laboratories (distributor), Livonia, MI. All Rugby products.