PlainVitamins

Natural D-Hist

by Ortho Molecular Products · capsule · 10 capsules

  • On the market (NIH)
  • DSLD label 174312
  • Serving 2 capsules
  • 5 servings

Natural D-Hist by Ortho Molecular Products lists 5 ingredients, 5 with an amount per serving of 2 capsules, such as 300 mg of vitamin C, 400 mg of quercetin dihydrate, 400 mg of stinging nettles and 100 mg of bromelain. Its current label entered the NIH Dietary Supplement Label Database on May 24, 2018.

What is in Natural D-Hist?

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

Natural D-Hist: Supplement Facts rows against the market (DSLD label 174312, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin Cas Ascorbic AcidVitamin C (Alt. Name: Ascorbic Acid) Note: USP300 mg500%Vitamin C in Natural D-Hist against 18,583 products300 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg300 mg

Higher than 75% of 18,583 products listing vitamin C (median 100 mg). Per day at the most servings: 900 mg.

Quercetin Dihydrate400 mgQuercetin in Natural D-Hist against 1,548 products400 mg per serving; the middle half of products list 26.5 mg to 250 mg, the median 100 mg.400 mg

Higher than 83% of 1,548 products listing quercetin (median 100 mg). Per day at the most servings: 1,200 mg.

Stinging Nettles400 mgStinging Nettle in Natural D-Hist against 710 products400 mg per serving; the middle half of products list 50 mg to 300 mg, the median 120 mg.400 mg

Higher than 83% of 710 products listing stinging nettle (median 120 mg). Per day at the most servings: 1,200 mg.

Bromelainas PineappleBromelain (Form: from Pineapple) Note: 2,400 GDU/g100 mgBromelain in Natural D-Hist against 1,337 products100 mg per serving; the middle half of products list 25 mg to 200 mg, the median 50 mg.100 mg

Higher than 55% of 1,337 products listing bromelain (median 50 mg). Per day at the most servings: 300 mg.

N-Acetyl-L-CysteineN-Acetyl-L-Cysteine Note: USP50 mgN-Acetyl Cysteine in Natural D-Hist against 1,259 products50 mg per serving; the middle half of products list 55 mg to 500 mg, the median 150 mg.50 mg

75% of 1,259 products listing N-acetyl cysteine give more (median 150 mg). Per day at the most servings: 150 mg.

Source: NIH ODS Dietary Supplement Label Database, label 174312 (entered May 24, 2018), 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 1 to 3 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?

6 products list the very same ingredients; the nearest amounts come first.

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 Use: Loading Dose: 2 capsules three times per day for 7-10 days. Maintenance: 2 or more capsules per day or as recommended by your health care professional.
Warnings
If you are pregnant or nursing, consult your physician before taking this product.
As with all dietary supplements, some individuals may not tolerate or may be allergic to the ingredients used. Please read the ingredient panel carefully prior to ingestion. Cease taking this product and consult your physician if you have negative reactions upon ingestion.
Keep out of reach of children.
This product was sealed for your protection. Do not use if box is open or blister seals are damaged.
Allergens and what it does not contain
Formulated To Be Free Of Allergens Derived From: Gluten, yeast, artificial colors and flavors.
Storage
Store at room temperature.

Source: label statements in DSLD label 174312.

What else is on the label?

Other ingredients: natural Vegetable Capsules, Magnesium Stearate, Silicon Dioxide, Stearic Acid.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): Vcaps.

How many labels does Natural D-Hist have?

3 labels are on file under this name since February 23, 2018: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 174312 (current) Entered May 24, 2018 · on the market · 10 capsules
  2. Label 174410 Entered March 23, 2018 · on the market · 120 capsules · UPC 6 15033 01524 4
  3. Label 174408 Entered February 23, 2018 · on the market · 40 capsules · UPC 6 15033 00524 5

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

Who makes it?

The label names Ortho Molecular Products, Inc. (manufacturer), Woodstock, IL. All Ortho Molecular Products products.

Where next?