
Swanson Ultimate Respiratory Defense
Go to StoreServing Size: 1 Veggie Capsule | ||
Servings Per Container: | ||
Amount Per Serving | % DV * | |
N-Acetyl Cysteine (NAC) | 600mg | * |
Quercetin (from quercetin dihydrate) | 300mg | * |
* % Daily Value (DV) is based on a 2,000 calorie diet. Your daily values may be higher or lower based on your calorie needs.
† Daily Value (DV) not established. |
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Other Ingredients: Hypromellose (vegetarian capsule), rice bran, magnesium stearate, silica. |
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Directions: As a dietary supplement, take one veggie capsule per day with water or as recommended by your healthcare provider. |
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Warnings: For adults only. 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. Keep out of reach of children. Do not use if seal is broken. Store in a cool, dry place. |

Swanson Ultimate Respiratory Defense
Go to Store- Respiratory Health
- Advanced Formula
- Dietary Supplement
- Vegetarian
- Supports Healthy Respiratory Function and Cellular Antioxidant Activity
- NAC Helps Replenish Glutathione, a Critical Component of the Body's Defense System
- Science-Backed Quality Since 1969
N-acetyl cysteine (NAC) is an amino acid derivative that has been clinically studied to support respiratory health and also helps replenish levels of glutathione, often called the “master antioxidant.” NAC and glutathione work together to protect against oxidative stress from free radicals and maintain healthy liver function, thereby supporting detoxification pathways. NAC is gaining popularity for promoting healthy aging and immune health.