PlainVitamins

AllerDHQ

by XYMOGEN · capsule · 120 vegetarian capsules

  • On the market (NIH)
  • UPC 8 71149 00094 3
  • DSLD label 303635
  • Serving 1 to 2 capsules; amounts per 2 capsules
  • 60 servings

AllerDHQ by XYMOGEN lists 6 ingredients, 6 with an amount per serving of 2 capsules, such as 200 mg of vitamin C, 400 mg of quercetin, 200 mg of stinging nettle aerial parts extract, aqueous and 100 mg of rutin. Its current label entered the NIH Dietary Supplement Label Database on December 14, 2023.

What is in AllerDHQ?

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).

AllerDHQ: Supplement Facts rows against the market (DSLD label 303635, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin Cas Ascorbic Acid200 mg222%Vitamin C in AllerDHQ against 18,583 products200 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg200 mg

Higher than 63% of 18,583 products listing vitamin C (median 100 mg).

Quercetinas Quercetin Dihydrate400 mgQuercetin in AllerDHQ 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).

Stinging Nettle Aerial Parts Extract, Aqueousas Silica1% silica200 mgStinging Nettle in AllerDHQ against 710 products200 mg per serving; the middle half of products list 50 mg to 300 mg, the median 120 mg.200 mg

Higher than 61% of 710 products listing stinging nettle (median 120 mg).

Bromelain2400 GDU/g100 mg
Rutinas Sophora japonica100 mgRutin in AllerDHQ against 1,232 products100 mg per serving; the middle half of products list 10 mg to 50 mg, the median 25 mg.100 mg

Higher than 84% of 1,232 products listing rutin (median 25 mg).

N-Acetyl-L-Cysteine100 mgN-Acetyl Cysteine in AllerDHQ against 1,259 products100 mg per serving; the middle half of products list 55 mg to 500 mg, the median 150 mg.100 mg

57% of 1,259 products listing N-acetyl cysteine give more (median 150 mg).

Dihydroquercetin40 mg

Source: NIH ODS Dietary Supplement Label Database, label 303635 (entered December 14, 2023), version 9.4.0. See the label on DSLD or its label image (PDF). 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 AllerDHQ's, rare ingredients counting for more.

  • HistaminXSeeking Health 4 shared, 47% alike
  • Natural D-HistOrtho Molecular Products 4 shared, 46% alike
  • D-Hist Jr.Ortho Molecular Products 4 shared, 46% alike
  • SinusCarePatient One MediNutritionals 4 shared, 46% alike
  • X-HistHoltraCeuticals 4 shared, 46% alike
  • SinusCarePatient One 1 MediNutritionals 4 shared, 46% 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: Take one to two capsules daily, or as directed by your healthcare professional.
Warnings
Consult your healthcare professional prior to use.
Individuals taking medication should discuss potential interactions with their healthcare professional.
Do not use if tamper seal is damaged.
Cautions: Do not use if you are pregnant or lactating.
Storage: Keep closed in a cool, dry place out of reach of children.
Allergens and what it does not contain
Formulated to exclude: Wheat, gluten, yeast, soy, animal and dairy products, fish, shellfish, peanuts, tree nuts, egg, ingredients derived from genetically modified organisms (GMOs), artificial colors, artificial sweeteners, and artificial preservatives.

Source: label statements in DSLD label 303635.

What else is on the label?

Other ingredients: Hypromellose, Water, Dicalcium Phosphate, Stearic Acid, Magnesium Stearate, Silica, Medium Chain Triglyceride Oil.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): Vegetarian caps ePV (ePedigree Verification); Third-Party Verified GMP Compliant.

How many labels does AllerDHQ have?

10 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 303635 (current) Entered December 14, 2023 · on the market · 120 vegetarian capsules · UPC 8 71149 00094 3
  2. Label 303634 Entered December 14, 2023 · on the market · 60 vegetarian capsules · UPC 8 71149 00344 9
  3. Label 294630 Entered July 18, 2023 · off the market September 8, 2023 · 120 vegetarian capsules · UPC 8 71149 00094 3
  4. Label 240039 Entered January 22, 2021 · on the market · 120 vegetarian capsules · UPC 8 71149 00094 3
  5. Label 218385 Entered April 23, 2020 · off the market January 23, 2019 · 60 vegetarian capsules · UPC 8 71149 00344 9
  6. Label 80628 Entered November 20, 2017 · off the market January 23, 2019 · 60 vegetarian capsules · UPC 8 71149 00344 9
  7. Label 65873 Entered November 21, 2016 · off the market January 23, 2019 · 60 vegetarian capsules · UPC 8 71149 00344 9
  8. Label 50876 Entered September 25, 2015 · off the market January 23, 2019 · 60 vegetarian capsules · UPC 8 71149 00344 9
  9. Label 25596 Entered September 25, 2013 · off the market January 23, 2019 · 60 vegetable capsules · UPC 8 71149 00344 9
  10. Label 5917 Entered February 23, 2012 · off the market August 7, 2012 · 60 vegetable capsules

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

Who makes it?

The label names XYMOGEN Exclusive Professional Formulas (manufacturer), Orlando, FL. All XYMOGEN products.

Where next?