NKC Immune Boost
by Sylvan Bio · capsule · 120 capsules
- On the market (NIH)
- UPC 8 13892 00601 8
- DSLD label 249769
- Serving 2 capsules
- 60 servings
NKC Immune Boost by Sylvan Bio lists 2 ingredients, 2 with an amount per serving of 2 capsules, such as 1,000 mg of agaricus blazei and 1,000 IU (25 mcg) of vitamin D. Its current label entered the NIH Dietary Supplement Label Database on July 27, 2021.
What is in NKC Immune Boost?
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).
| Ingredient | Amount | % DV | Among products listing it |
|---|---|---|---|
| Agaricus blazei | 1,000 mg | Higher than 83% of 72 products listing agaricus mushroom (median 250 mg). Per day at the most servings: 2,000 mg. | |
| Vitamin Das ErgocalciferolVitamin D (Form: as Ergocalciferol (Form: from A. blazei Mushroom powder Genus: A. Species: blazei)) | 1,000 IU (25 mcg) | 125% | Higher than 59% of 14,175 products listing vitamin D (median 15 mcg). Per day at the most servings: 50 mcg. |
Source: NIH ODS Dietary Supplement Label Database, label 249769 (entered July 27, 2021), 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 2 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?
The products whose ingredient lists overlap most with NKC Immune Boost's, rare ingredients counting for more.
- Agaricus BlazeiBioAnue · off the market 1 shared, 74% alike
- Agaricus BioAtlas World 1 shared, 74% alike
- Agaricus Bio Super liquidAtlas World 1 shared, 74% alike
- Fermented Royal Agaricus 500 mgSolaray 1 shared, 74% alike
- Full Spectrum Agaricus 500 mgPlanetary Herbals 1 shared, 74% alike
- Agaricus Blazei Mushroom Extract 500 mgSwanson Superior Herbs 1 shared, 74% 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 for use: Take 2 capsules 2 times per day (morning and evening) with water at mealtimes. Do not take more than 4 capsules in a 24 hour period.
- Warnings
- Keep out of reach of children.
- As with any dietary supplement, consult a physician if you are taking any prescription.
- Warning: Do not use if you are pregnant, can become pregnant, or are nursing; have undergone an organ transplant or major surgery within the past six weeks; have active liver disease or history of liver disease; are allergic to mushrooms or mushroom products.
- Do not use if freshness seals are damaged or missing.
Source: label statements in DSLD label 249769.
What else is on the label?
Other ingredients: organic Agaricus blazei Mushrooms, Gelatin Capsules.
How many labels does NKC Immune Boost have?
One label is on file, entered on July 27, 2021.
- Label 249769 (current) Entered July 27, 2021 · on the market · 120 capsules · UPC 8 13892 00601 8
Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).
Who makes it?
The label names Sylvan Bio, Inc. (manufacturer), Kittanning, PA. All Sylvan Bio products.