Ultimate Respiratory Defense
by Swanson · capsule · 60 veggie caps
- On the market (NIH)
- UPC 0 87614 11852 9
- DSLD label 322784
- Serving 1 veggie capsule
- 60 servings
Ultimate Respiratory Defense by Swanson lists 2 ingredients, 2 with an amount per serving of 1 veggie capsule, such as 600 mg of N-acetyl cysteine and 300 mg of quercetin. Its current label entered the NIH Dietary Supplement Label Database on February 23, 2025.
What is in Ultimate Respiratory Defense?
Each row as the label prints it, per serving of 1 veggie capsule. 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 |
|---|---|---|---|
| N-Acetyl Cysteine | 600 mg | Higher than 80% of 1,259 products listing N-acetyl cysteine (median 150 mg). | |
| Quercetinas Quercetin Dihydrate | 300 mg | Higher than 79% of 1,548 products listing quercetin (median 100 mg). |
Source: NIH ODS Dietary Supplement Label Database, label 322784 (entered February 23, 2025), 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 Ultimate Respiratory Defense's, rare ingredients counting for more.
- NAC 1,000 mg Quercetin 500 mg & Zinc 15 mgNOW 2 shared, 79% alike
- Mega NAC + QuercetinBody Kitchen 2 shared, 70% alike
- OrthoMuneOrtho Molecular Products 2 shared, 58% alike
- NAC N-Acetyl Cysteine 600 mgVitamin World · off the market 1 shared, 52% alike
- NAC 600GNC · off the market 1 shared, 52% alike
- N-Acetyl Cysteine 600 mgPuritan's Pride 1 shared, 52% 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
- Suggested use: as a dietary supplement, take one veggie capsule per day with water or as recommended by your healthcare provider.
- Warnings
- Warning: for adults only. Keep out of reach of children.
- Do not take this product if you are pregnant or nursing. Consult your healthcare provider before use if you are taking any prescription medication or if you have a medical condition.
- Discontinue use if you experience gastrointestinal discomfort. Do not use if seal is broken.
- Storage
- Store in a cool, dry place.
Source: label statements in DSLD label 322784.
What else is on the label?
Other ingredients: Hypromellose, Rice Bran, Magnesium Stearate, Silica.
Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): V Vegetarian.
How many labels does Ultimate Respiratory Defense have?
One label is on file, entered on February 23, 2025.
- Label 322784 (current) Entered February 23, 2025 · on the market · 60 veggie caps · UPC 0 87614 11852 9
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 products.