Ultra-C Forte

by Douglas Laboratories · capsule · 180 capsules

  • On the market (NIH)
  • DSLD label 8604
  • Serving 1 capsule

Ultra-C Forte by Douglas Laboratories lists 2 ingredients, 2 with an amount per serving of 1 capsule, such as 500 mg of vitamin C and 10 mg of proanthocyanidins. Its current label entered the NIH Dietary Supplement Label Database on April 26, 2012.

What is in Ultra-C Forte?

Each row as the label prints it, per serving of 1 capsule. 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).

Ultra-C Forte: Supplement Facts rows against the market (DSLD label 8604, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin C500 mg833%Vitamin C in Ultra-C Forte against 18,583 products500 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg500 mg

Higher than 81% of 18,583 products listing vitamin C (median 100 mg).

Proanthocyanidins10 mgProanthocyanidins in Ultra-C Forte against 164 products10 mg per serving; the middle half of products list 12.5 mg to 95 mg, the median 36 mg.10 mg

76% of 164 products listing proanthocyanidins give more (median 36 mg).

Proprietary Bioflavonoid Complex325 mg

Source: NIH ODS Dietary Supplement Label Database, label 8604 (entered April 26, 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?

Every amount on this label with a position sits within the middle 80% of the products that list the same ingredient.

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 Ultra-C Forte'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 1 capsule daily 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, soy protein, wheat gluten, milk/dairy, 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 8604.

What else is on the label?

Other ingredients: Gelatin, Silica, Vegetable Stearate.

How many labels does Ultra-C Forte have?

2 labels are on file under this name since January 25, 2012: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 8604 (current) Entered April 26, 2012 · on the market · 180 capsules
  2. Label 5133 Entered January 25, 2012 · on the market · 90 capsules · UPC 3 10539 01717 3

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?