Shiitake Mushroom Extract 500 mg
by Swanson Superior Herbs · capsule · 120 capsules
- Off the market since December 2023 (NIH)
- UPC 0 87614 14268 5
- DSLD label 180598
- Serving 2 capsules
- 60 servings
Shiitake Mushroom Extract 500 mg by Swanson Superior Herbs lists one ingredient: 1 g of shiitake mushroom 4:1 extract per serving of 2 capsules. Its current label entered the NIH Dietary Supplement Label Database on August 31, 2018.
What is in Shiitake Mushroom Extract 500 mg?
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 |
|---|---|---|---|
| Shiitake Mushroom 4:1 extract | 1 g | Higher than 92% of 256 products listing shiitake mushroom (median 100 mg). Per day at the most servings: 2,000 mg. |
Source: NIH ODS Dietary Supplement Label Database, label 180598 (entered August 31, 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?
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:
- Its 1,000 mg of shiitake mushroom is higher than 92% of the 256 shiitake mushroom products that print an amount; 10 list more.
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?
6 products list the very same ingredients; the nearest amounts come first.
- Fermented Shiitake 500 mgSolaray same ingredients
- Shiitake Mushroom 500 mgSwanson Premium Brand · off the market same ingredients
- Shiitake Mushroom 1000 mgRemedys Nutrition same ingredients
- Shiitake Mushroom 4:1 Extract PowderTerraVita Premium Collection same ingredients
- Shiitake Mushroom PowderTerraVita Premium Collection same ingredients
- Shiitake Mushroom 1,000 mgNutricost same ingredients
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: As a dietary supplement, take two capsules two times per day with water.
- Warnings
- Do not use if seal is broken.
- Keep out of reach of children.
- Warning: Do not take this product if you are pregnant or nursing.
- Storage
- Store in a cool, dry place.
Source: label statements in DSLD label 180598.
What else is on the label?
Other ingredients: Gelatin, Rice Bran, Silica, Rice Extract.
Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): Guaranteed purity & potency.
How many labels does Shiitake Mushroom Extract 500 mg have?
One label is on file, entered on August 31, 2018.
- Label 180598 (current) Entered August 31, 2018 · off the market December 5, 2023 · 120 capsules · UPC 0 87614 14268 5
Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).
Who makes it?
The label names Swanson Health Products (distributor), Fargo, ND. All Swanson Superior Herbs products.