PlainVitamins

Respiratory Support & Defense

by Nature's Secret · tablet or pill · 60 tablets

  • On the market (NIH)
  • UPC 7 10363 25560 2
  • DSLD label 69402
  • Serving 2 tablets
  • 30 servings

Respiratory Support & Defense by Nature's Secret lists 16 ingredients, 12 with an amount per serving of 2 tablets, such as 300 mg of N-acetyl-L-cysteine, 100 mg of fenugreek powder, 100 mg of marshmallow extract and 100 mg of mullein (verbascum thapsus) powder; 4 sit inside a blend without their own amounts. Its current label entered the NIH Dietary Supplement Label Database on January 25, 2017.

What is in Respiratory Support & Defense?

Each row as the label prints it, per serving of 2 tablets. 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).

Respiratory Support & Defense: Supplement Facts rows against the market (DSLD label 69402, January 2026 release)
IngredientAmount% DVAmong products listing it
N-Acetyl-L-Cysteine300 mgN-Acetyl Cysteine in Respiratory Support & Defense against 1,259 products300 mg per serving; the middle half of products list 55 mg to 500 mg, the median 150 mg.300 mg

Higher than 67% of 1,259 products listing N-acetyl cysteine (median 150 mg). Per day at the most servings: 600 mg.

Fenugreek powder100 mgFenugreek in Respiratory Support & Defense against 628 products100 mg per serving; the middle half of products list 100 mg to 600 mg, the median 300 mg.100 mg

74% of 628 products listing fenugreek give more (median 300 mg). Per day at the most servings: 200 mg.

Marshmallow extractMarshmallow extract PlantPart: root Note: 4:1100 mgMarshmallow in Respiratory Support & Defense against 290 products100 mg per serving; the middle half of products list 50 mg to 224 mg, the median 100 mg.100 mg

44% of 290 products listing marshmallow give more (median 100 mg). Per day at the most servings: 200 mg.

Mullein (Verbascum thapsus) powder100 mgMullein in Respiratory Support & Defense against 97 products100 mg per serving; the middle half of products list 50 mg to 580 mg, the median 100 mg.100 mg

40% of 97 products listing mullein give more (median 100 mg). Per day at the most servings: 200 mg.

Skullcap powder80 mgSkullcap in Respiratory Support & Defense against 146 products80 mg per serving; the middle half of products list 50 mg to 443.75 mg, the median 142.5 mg.80 mg

59% of 146 products listing skullcap give more (median 142.5 mg). Per day at the most servings: 160 mg.

Paba50 mgPABA in Respiratory Support & Defense against 1,610 products50 mg per serving; the middle half of products list 10 mg to 50 mg, the median 25 mg.50 mg

Higher than 62% of 1,610 products listing PABA (median 25 mg). Per day at the most servings: 100 mg.

Watercress powder50 mgWatercress in Respiratory Support & Defense against 81 products50 mg per serving; the middle half of products list 50 mg to 300 mg, the median 100 mg.50 mg

68% of 81 products listing watercress give more (median 100 mg). Per day at the most servings: 100 mg.

Garlic powder30 mgGarlic in Respiratory Support & Defense against 1,075 products30 mg per serving; the middle half of products list 50 mg to 500 mg, the median 200 mg.30 mg

83% of 1,075 products listing garlic give more (median 200 mg). Per day at the most servings: 60 mg.

Onion powder30 mgOnion in Respiratory Support & Defense against 38 products30 mg per serving; the middle half of products list 26.25 mg to 983 mg, the median 95 mg.30 mg

68% of 38 products listing onion give more (median 95 mg). Per day at the most servings: 60 mg.

Pleurisy root powder30 mg
Turnip powder30 mg
Thyme, Powder10 mgThyme in Respiratory Support & Defense against 89 products10 mg per serving; the middle half of products list 50 mg to 500 mg, the median 188 mg.10 mg

92% of 89 products listing thyme give more (median 188 mg). Per day at the most servings: 20 mg.

Proprietary Blend102 mg
Licorice (Glycyrrhiza glabra) powderin the blend, no amount given
Alfalfa powderin the blend, no amount given
Cayenne extractCayenne extract PlantPart: fruit Note: 30,000 HUin the blend, no amount given
BioPerine Black Pepper extractBioPerine Black Pepper extract PlantPart: fruit Note: 50:1in the blend, no amount given

Source: NIH ODS Dietary Supplement Label Database, label 69402 (entered January 25, 2017), 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:

  • 92% of the 89 products that print an amount of thyme list more than its 10 mg of thyme (median 188 mg).

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.

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: (Adult) Take two (2) tablets twice daily with a full glass of water.
Warnings
Usage Warnings: Do not use if safety seal is broken.
Check with your doctor before using this product if you are using medication or have any medical conditions. Do not use if you may become pregnant, are pregnant or nursing.
Do not exceed recommended daily intake.
Not intended for use by persons under 18. Keep out of reach of children.
Warning: (State of California Prop 65) This product contains a chemical known to the State of California to cause birth defects or other reproductive harm.
Contains: Soy
Allergens and what it does not contain
No artificial colors or preservatives.
Storage
Store in a cool, dry place.

Source: label statements in DSLD label 69402.

What else is on the label?

Other ingredients: Calcium Carbonate, Microcrystalline Cellulose, Dicalcium Phosphate, Stearic Acid, Magnesium Stearate, Silicon Dioxide, Gum Arabic, Croscarmellose Sodium, Sodium Carboxymethylcellulose, Dextrose, Soy Lecithin, Sodium Citrate, Dextrin.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): Q Quality Tested.

How many labels does Respiratory Support & Defense have?

2 labels are on file under this name since June 25, 2015: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 69402 (current) Entered January 25, 2017 · on the market · 60 tablets · UPC 7 10363 25560 2
  2. Label 45140 Entered June 25, 2015 · off the market September 28, 2015 · 60 tablets

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

Who makes it?

The label names Nature's Secret (manufacturer, distributor), Los Angeles, CA. All Nature's Secret products.

Where next?