PlainVitamins

Seasonal Shield

by NuMedica · capsule · 120 vegetable capsules

  • On the market (NIH)
  • UPC 8 12527 01677 4
  • DSLD label 323684
  • Serving 4 capsules
  • 30 servings

Seasonal Shield by NuMedica lists 11 ingredients, 11 with an amount per serving of 4 capsules, such as 200 mg of vitamin C, 25 mcg (1,000 IU) of vitamin D3, 25 mg of zinc and 500 mg of quercetin dihydrate. Its current label entered the NIH Dietary Supplement Label Database on December 21, 2024.

What is in Seasonal Shield?

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).

Seasonal Shield: Supplement Facts rows against the market (DSLD label 323684, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin Cas Ascorbic Acid200 mg222%Vitamin C in Seasonal Shield 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).

Vitamin D3as Cholecalciferol1000 IU25 mcg (1,000 IU)125%Vitamin D in Seasonal Shield against 14,175 products25 mcg per serving; the middle half of products list 10 mcg to 25 mcg, the median 15 mcg.DV 20 mcgUL 100 mcg25 mcg

Higher than 59% of 14,175 products listing vitamin D (median 15 mcg).

Zincas Zinc Methionate25 mg227%Zinc in Seasonal Shield against 13,186 products25 mg per serving; the middle half of products list 5 mg to 15 mg, the median 11 mg.DV 11 mgUL 40 mg25 mg

Higher than 85% of 13,186 products listing zinc (median 11 mg).

Quercetin Dihydrate500 mgQuercetin in Seasonal Shield against 1,548 products500 mg per serving; the middle half of products list 26.5 mg to 250 mg, the median 100 mg.500 mg

Higher than 84% of 1,548 products listing quercetin (median 100 mg).

Boswellia serrata Resin Extractas Boswellic Acids65% boswellic acids300 mgBoswellia in Seasonal Shield against 665 products300 mg per serving; the middle half of products list 100 mg to 290 mg, the median 135 mg.300 mg

Higher than 75% of 665 products listing boswellia (median 135 mg).

Nettle Root Extractas Urtica dioica Root Extract4:1300 mgStinging Nettle in Seasonal Shield against 710 products300 mg per serving; the middle half of products list 50 mg to 300 mg, the median 120 mg.300 mg

Higher than 74% of 710 products listing stinging nettle (median 120 mg).

N-Acetyl Cysteine250 mgN-Acetyl Cysteine in Seasonal Shield against 1,259 products250 mg per serving; the middle half of products list 55 mg to 500 mg, the median 150 mg.250 mg

Higher than 60% of 1,259 products listing N-acetyl cysteine (median 150 mg).

Citrus Bioflavonoidsas Citrus Fruit Extract222 mgFlavonoid in Seasonal Shield against 2,343 products222 mg per serving; the middle half of products list 25 mg to 100 mg, the median 50 mg.222 mg

Higher than 88% of 2,343 products listing flavonoid (median 50 mg).

Bromelain2400 GDU/g200 mgBromelain in Seasonal Shield against 1,337 products200 mg per serving; the middle half of products list 25 mg to 200 mg, the median 50 mg.200 mg

Higher than 73% of 1,337 products listing bromelain (median 50 mg).

Grape Seed Extractas Polyphenols95% polyphenols20 mgGrape in Seasonal Shield against 1,900 products20 mg per serving; the middle half of products list 25 mg to 100 mg, the median 50 mg.20 mg

79% of 1,900 products listing grape give more (median 50 mg).

Betaineas Betaine Hydrochloride15 mgBetaine in Seasonal Shield against 731 products15 mg per serving; the middle half of products list 50 mg to 1,250 mg, the median 250 mg.15 mg

94% of 731 products listing betaine give more (median 250 mg).

Source: NIH ODS Dietary Supplement Label Database, label 323684 (entered December 21, 2024), 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?

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:

  • 94% of the 731 products that print an amount of betaine list more than its 15 mg of betaine (median 250 mg).

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 Seasonal Shield's, rare ingredients counting for more.

  • Natural D-HistOrtho Molecular Products 5 shared, 46% alike
  • D-Hist Jr.Ortho Molecular Products 5 shared, 46% alike
  • SinusCarePatient One MediNutritionals 5 shared, 46% alike
  • X-HistHoltraCeuticals 5 shared, 46% alike
  • SinusCarePatient One 1 MediNutritionals 5 shared, 46% alike
  • SinuplexMetagenics 5 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 four capsules once per day or as directed by your healthcare practitioner.
Warnings
Caution: Keep out of reach of children.
Allergens and what it does not contain
Does not contain: milk, eggs, fish, shellfish, tree nuts, peanuts, wheat, soy. Sourced from non-GMO ingredients. Gluten-free
Storage
Storage: Keep tightly closed in a cool, dry place.

Source: label statements in DSLD label 323684.

What else is on the label?

Other ingredients: Hydroxypropyl Methylcellulose, Magnesium Stearate, Silicon Dioxide.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): cGMP Third-Party Certified Facility.

How many labels does Seasonal Shield have?

One label is on file, entered on December 21, 2024.

  1. Label 323684 (current) Entered December 21, 2024 · on the market · 120 vegetable capsules · UPC 8 12527 01677 4

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

Who makes it?

The label names NuMedica LLC (distributor), Tulsa, OK. All NuMedica products.

Where next?