Natursyl Capsules

by Douglas Laboratories · capsule · 90 capsules

  • On the market (NIH)
  • UPC 3 10539 01158 4
  • DSLD label 55898
  • Serving 4 capsules
  • 22 servings

Natursyl Capsules by Douglas Laboratories lists 6 ingredients; 6 sit inside a blend without their own amounts, beside 2 Nutrition Facts rows (calories, fat and the like). Its current label entered the NIH Dietary Supplement Label Database on January 25, 2016.

What is in Natursyl Capsules?

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).

Natursyl Capsules: Supplement Facts rows against the market (DSLD label 55898, January 2026 release)
IngredientAmount% DVAmong products listing it
Total Calories6 Calories
Total Carbohydrates1.5 g1%Carbohydrate in Natursyl Capsules against 21,979 products1.5 g per serving; the middle half of products list 1 g to 6 g, the median 3 g.1.5 g

73% of 21,979 products listing carbohydrate give more (median 3 g).

Dietary Fiber1.5 g6%Fiber in Natursyl Capsules against 6,987 products1.5 g per serving; the middle half of products list 1 g to 4 g, the median 2 g.1.5 g

54% of 6,987 products listing fiber give more (median 2 g).

Proprietary Blend1,800 mg
PsylliumPsyllium PlantPart: seed husks Note: milledin the blend, no amount given
Citrus Pectinin the blend, no amount given
Lactobacillus acidophilusin the blend, no amount given
Lactobacillus bifidusin the blend, no amount given
Artichokein the blend, no amount given
Cellulosein the blend, no amount given

Source: NIH ODS Dietary Supplement Label Database, label 55898 (entered January 25, 2016), 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?

Every amount on this label with a position sits within the middle 80% of the products that list the same ingredient; 6 ingredients sit inside a blend, so their amounts cannot be compared.

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 Natursyl Capsules'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
Suggested Usage: As a dietary supplement, adults take 4 capsules daily followed by 8 ounces of purified water or as directed by your healthcare professional.
Warnings
KEEP OUT OF REACH OF CHILDREN.
Tamper resistant package, do not use if outer seal is missing.
Allergens and what it does not contain
This product contains NO yeast, wheat, gluten, milk/dairy, soy protein, corn, sodium, sugar, starch, artificial coloring, preservatives or flavoring.
Storage
For optimal storage conditions, store in a cool, dry place. (59(0)-77(0)F/15(0)-25(0)C) (35-65% relative humidity)

Source: label statements in DSLD label 55898.

What else is on the label?

Other ingredients: Gelatin, Vegetable Stearate.

How many labels does Natursyl Capsules have?

3 labels are on file under this name since February 23, 2012: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 55898 (current) Entered January 25, 2016 · on the market · 90 capsules · UPC 3 10539 01158 4
  2. Label 8993 Entered June 1, 2012 · off the market December 15, 2015 · 90 capsules · UPC 3 10539 01158 4
  3. Label 5230 Entered February 23, 2012 · off the market January 20, 2012 · 90 capsules · UPC 3 10539 01158 4

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

Who makes it?

The label names Douglas Laboratories (manufacturer), Pittsburgh, PA. All Douglas Laboratories products.

Where next?