Hero image 0 of NOW Foods NAC Quercetin & Zinc, 90 Veg Capsules, 0 of 10
NOW Foods NAC Quercetin & Zinc, 90 Veg Capsules
Key item features
- Immune & Respiratory Support
- 1,000 mg NAC, 500 mg Quercetin & 15 mg Zinc Per Serving
- Non-GMO
- N-acetyl cysteine (NAC) is a stable form of the non-essential amino acid cysteine
- It is a sulfur-containing amino acid that acts as a stabilizer for the formation of protein structures, and promotes the formation of glutathione
Specs
- BrandNOW Foods
- Size4.50
- Enteral medication formCapsules
- Primary ingredientQuercetin
- DosageTake 2 capsules daily.
- Vitamin & supplement typeMultivitamin Supplements
Current price is USD$26.20
Price when purchased online
- Free shipping
Free 30-day returns
How do you want your item?
Ships to
Arrives between Jun 22 - Jun 25
|
Sold and shipped by iHerb
4.556958493198465 stars out of 5, based on 14335 seller reviews(4.6)14335 seller reviews
Free 30-day returns
Other sellers
$26.98
+Free shippingShipping, arrives by Tue, Jun 23 to Columbus, 43215
Sold and shipped by Fruitful Yield
Free 90-day returns
About this item
Product details
Immune & Respiratory Support 1,000 mg NAC, 500 mg Quercetin & 15 mg Zinc Per Serving Non-GMO A Dietary Supplement General Health Family Owned Since 1968 GMP Quality Assured N-acetyl cysteine (NAC) is a stable form of the non-essential amino acid cysteine. It is a sulfur-containing amino acid that acts as a stabilizer for the formation of protein structures, and promotes the formation of glutathione. Glutathione is a powerful free radical scavenging compound that also helps to maintain normal, balanced immune system function. Quercetin is a naturally occurring free radical neutralizer that supports healthy seasonal immune system function. Laboratory studies have demonstrated that quercetin can also help to promote normal respiratory function. Zinc has been included for its immune-supporting properties.
- Immune & Respiratory Support
- 1,000 mg NAC, 500 mg Quercetin & 15 mg Zinc Per Serving
- Non-GMO
- N-acetyl cysteine (NAC) is a stable form of the non-essential amino acid cysteine
- It is a sulfur-containing amino acid that acts as a stabilizer for the formation of protein structures, and promotes the formation of glutathione
info:
We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here, and we have not verified it. Â
Specifications
Brand
NOW Foods
Size
4.50
Enteral medication form
Capsules
Primary ingredient
Quercetin
Indications
Health Concern
Immune System Support
Directions
Dosage
Take 2 capsules daily.
Warranty
Warranty information
None
Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.
Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.
Ingredients
Ingredients
Hypromellose (cellulose capsule), ascorbyl
Similar items you might like
Based on what customers bought
Himalaya Hello Peace with Ashwagandha, Turmeric & Saffron for Stress Relief, Vegan, 60 Capsules $24.49
Sponsored$2449current price $24.49Himalaya Hello Peace with Ashwagandha, Turmeric & Saffron for Stress Relief, Vegan, 60 Capsules
474.7 out of 5 Stars. 47 reviewsSave with
Shipping, arrives tomorrowGaia Herbs Berberine & Milk Thistle - Milk Thistle & Berberine Supplement with Ginger Root - Supports Liver Health* - Vegan, Gluten-Free, Dairy-Free, Non-GMO Project Verified - 60 Capsules $35.99
Sponsored$3599current price $35.99Gaia Herbs Berberine & Milk Thistle - Milk Thistle & Berberine Supplement with Ginger Root - Supports Liver Health* - Vegan, Gluten-Free, Dairy-Free, Non-GMO Project Verified - 60 Capsules
Save withShipping, arrives tomorrowNOW Foods Bilberry Complex, 100 Veg Capsules $22.89
$2289current price $22.89NOW Foods Bilberry Complex, 100 Veg Capsules
34 out of 5 Stars. 3 reviewsNOW Foods Ashwagandha, 450 mg, 30 Veg Capsules $7.03
$703current price $7.03NOW Foods Ashwagandha, 450 mg, 30 Veg Capsules
Best seller BFQN Organic Berberine Liquid Drops with Ceylon Cinnamon – Herbal Supplement for Men & Women, Blood Sugar & Metabolic Support, 2 fl oz (2-Pack) $25.99 Was $33.99
Best seller
8 optionsAvailable in additional 8 options$2599current price $25.99, Was $33.99$33.99BFQN Organic Berberine Liquid Drops with Ceylon Cinnamon – Herbal Supplement for Men & Women, Blood Sugar & Metabolic Support, 2 fl oz (2-Pack)
1144.3 out of 5 Stars. 114 reviewsBest seller Soursop Bitters Liquid Drops with Irish Sea Moss, Black Seed oil, Soursop Graviola Leaves Extract - Soursop Multivitamin Complex Supports Antioxidant, Gut Cleanse & Immunity, 2 oz $14.79 Was $25.99
Best seller
2 optionsAvailable in additional 2 options$1479current price $14.79, Was $25.99$25.99Soursop Bitters Liquid Drops with Irish Sea Moss, Black Seed oil, Soursop Graviola Leaves Extract - Soursop Multivitamin Complex Supports Antioxidant, Gut Cleanse & Immunity, 2 oz
1414.6 out of 5 Stars. 141 reviewsNusaPure Jiaogulan Capsules, 450 mg, 180 Veg Capsules (Non-GMO, Vegan) $22.00
Sponsored$2200current price $22.00NusaPure Jiaogulan Capsules, 450 mg, 180 Veg Capsules (Non-GMO, Vegan)
74.4 out of 5 Stars. 7 reviewsSave withShipping, arrives tomorrowNOW Supplements, Turmeric Curcumin, Derived from Turmeric Root Extract, 95% Curcuminoids, Herbal Supplement, 60 Veg Capsules $20.88 34.8 ¢/count
Sponsored$2088current price $20.8834.8 ¢/countNOW Supplements, Turmeric Curcumin, Derived from Turmeric Root Extract, 95% Curcuminoids, Herbal Supplement, 60 Veg Capsules
414.7 out of 5 Stars. 41 reviewsSave withShipping, arrives todayNOW Supplements, Turmeric Curcumin with BioPerine, Immune System Support, Standardized to 95% Curcuminoids, Enhanced Absorption*, 90 Veg Capsules $24.68 27.4 ¢/count
2 optionsAvailable in additional 2 options$2468current price $24.6827.4 ¢/countNOW Supplements, Turmeric Curcumin with BioPerine, Immune System Support, Standardized to 95% Curcuminoids, Enhanced Absorption*, 90 Veg Capsules
1734.8 out of 5 Stars. 173 reviewsWishGarden Herbs Elderberry , 2 fl oz (59 ml) $28.48
$2848current price $28.48WishGarden Herbs Elderberry , 2 fl oz (59 ml)
125 out of 5 Stars. 12 reviewsNOW Foods - Moringa Leaf Green Super Herb 800 mg. - 90 Veg Capsules $18.98
$1898current price $18.98NOW Foods - Moringa Leaf Green Super Herb 800 mg. - 90 Veg Capsules
25 out of 5 Stars. 2 reviewsFuturebiotics Maca Root, 120 Vegetarian Capsules (500 mg per Capsule) $16.04
$1604current price $16.04Futurebiotics Maca Root, 120 Vegetarian Capsules (500 mg per Capsule)
NutriCology Quercetin 300 - 60 Capsules $34.99
Sponsored$3499current price $34.99NutriCology Quercetin 300 - 60 Capsules
Save withShipping, arrives tomorrowNusaPure Graviola Capsules, 500 mg, 200 Veg Capsules (Non-GMO, Vegan) $29.15
Sponsored$2915current price $29.15NusaPure Graviola Capsules, 500 mg, 200 Veg Capsules (Non-GMO, Vegan)
84.6 out of 5 Stars. 8 reviewsSave withShipping, arrives tomorrowImmune Renew, 90 Veg Capsules, NOW Foods $16.93
$1693current price $16.93Immune Renew, 90 Veg Capsules, NOW Foods
144.6 out of 5 Stars. 14 reviewsThinbi Berberine 15-Day Cleanse, 30 Capsules $21.25
$2125current price $21.25Thinbi Berberine 15-Day Cleanse, 30 Capsules
NOW Foods Certified Organic Turmeric Extract, 2 fl oz (59 ml) $13.72 Was $15.96
$1372current price $13.72, Was $15.96$15.96NOW Foods Certified Organic Turmeric Extract, 2 fl oz (59 ml)
214.7 out of 5 Stars. 21 reviewsNutricost Black Cohosh for Women Supplement 550mg, 120 Capsules - Non-GMO $14.95
Sponsored$1495current price $14.95Nutricost Black Cohosh for Women Supplement 550mg, 120 Capsules - Non-GMO
194.8 out of 5 Stars. 19 reviewsSave withShipping, arrives tomorrowSolaray Fermented Turmeric Root 500mg | 100 VegCaps $22.02
Sponsored$2202current price $22.02Solaray Fermented Turmeric Root 500mg | 100 VegCaps
1434.7 out of 5 Stars. 143 reviewsSave withShipping, arrives tomorrow
Check out these related products
NOW Supplements, L-Ornithine (L-Ornithine Hydrochloride) 500 mg, Amino Acid, 120 Veg Capsules $18.88 15.7 ¢/count
$1888current price $18.8815.7 ¢/countNOW Supplements, L-Ornithine (L-Ornithine Hydrochloride) 500 mg, Amino Acid, 120 Veg Capsules
45 out of 5 Stars. 4 reviewsNOW Supplements, L-Arginine 500 mg, Nitric Oxide Precursor*, Amino Acid, 100 Veg Capsules $9.71 Was $10.97 9.7 ¢/count
4 optionsAvailable in additional 4 options$971current price $9.71, Was $10.97$10.979.7 ¢/countNOW Supplements, L-Arginine 500 mg, Nitric Oxide Precursor*, Amino Acid, 100 Veg Capsules
404.8 out of 5 Stars. 40 reviewsNOW Supplements, L-Arginine 1,000 mg, Nitric Oxide Precursor*, Amino Acid, 120 Tablets $17.49 14.6 ¢/count
3 optionsAvailable in additional 3 options$1749current price $17.4914.6 ¢/countNOW Supplements, L-Arginine 1,000 mg, Nitric Oxide Precursor*, Amino Acid, 120 Tablets
634.7 out of 5 Stars. 63 reviewsCarlson Acetyl-L-Carnitine, 500 mg, 120 Vegetarian Capsules $40.93
$4093current price $40.93Carlson Acetyl-L-Carnitine, 500 mg, 120 Vegetarian Capsules
274.8 out of 5 Stars. 27 reviewsNOW Supplements, L-Glutamine 500 mg, Nitrogen Transporter*, Amino Acid, 120 Veg Capsules $11.99 10.0 ¢/ea
2 optionsAvailable in additional 2 options$1199current price $11.9910.0 ¢/eaNOW Supplements, L-Glutamine 500 mg, Nitrogen Transporter*, Amino Acid, 120 Veg Capsules
594.5 out of 5 Stars. 59 reviewsNOW Supplements, L-Lysine (L-Lysine Hydrochloride) Powder, Supports Collagen Synthesis*, Amino Acid, 1-Pound $19.09 $19.09/lb
$1909current price $19.09$19.09/lbNOW Supplements, L-Lysine (L-Lysine Hydrochloride) Powder, Supports Collagen Synthesis*, Amino Acid, 1-Pound
274.7 out of 5 Stars. 27 reviewsNOW Supplements, Organic Spirulina 500 mg with Vitamins, Minerals and GLA, Unflavored, 500 Tablets $22.25 4.5 ¢/ea
2 optionsAvailable in additional 2 options$2225current price $22.254.5 ¢/eaNOW Supplements, Organic Spirulina 500 mg with Vitamins, Minerals and GLA, Unflavored, 500 Tablets
364.6 out of 5 Stars. 36 reviewsNOW Foods Glutathione , 500 mg, 120 Veg Capsules $38.49
$3849current price $38.49NOW Foods Glutathione , 500 mg, 120 Veg Capsules
424.5 out of 5 Stars. 42 reviewsNAC Pure Powder - 4 oz. $18.00
2 optionsAvailable in additional 2 options$1800current price $18.00NAC Pure Powder - 4 oz.
64.3 out of 5 Stars. 6 reviewsLife Extension L-Glutamine, 500 mg L-glutamine, amino acid, supports muscle health and immune health, gluten-free, non-GMO, 100 vegetarian capsules $10.13
$1013current price $10.13Life Extension L-Glutamine, 500 mg L-glutamine, amino acid, supports muscle health and immune health, gluten-free, non-GMO, 100 vegetarian capsules
914.7 out of 5 Stars. 91 reviewsBest seller NOW Supplements, Super Enzymes, Formulated with Bromelain, Ox Bile, Pancreatin and Papain, 90 Caps $14.99 Was $21.99 16.7 ¢/count
Best seller
$1499current price $14.99, Was $21.99$21.9916.7 ¢/countNOW Supplements, Super Enzymes, Formulated with Bromelain, Ox Bile, Pancreatin and Papain, 90 Caps
1644.5 out of 5 Stars. 164 reviewsNOW Supplements, Alfalfa 650 mg source of Vitamin K, Green Superfoods, 250 Tablets $15.25 6.1 ¢/count
$1525current price $15.256.1 ¢/countNOW Supplements, Alfalfa 650 mg source of Vitamin K, Green Superfoods, 250 Tablets
374.9 out of 5 Stars. 37 reviewsNOW Supplements, Taurine Pure Powder, Nervous System Health*, Amino Acid, 8-Ounce $13.99 $1.75/oz
$1399current price $13.99$1.75/ozNOW Supplements, Taurine Pure Powder, Nervous System Health*, Amino Acid, 8-Ounce
264.5 out of 5 Stars. 26 reviewsNOW Supplements, Saw Palmetto Berries (Serenoa repens) 550 mg, Men's Health*, 250 Veg Capsules $17.84 Was $19.85
2 optionsAvailable in additional 2 options$1784current price $17.84, Was $19.85$19.85NOW Supplements, Saw Palmetto Berries (Serenoa repens) 550 mg, Men's Health*, 250 Veg Capsules
184.8 out of 5 Stars. 18 reviewsNOW Supplements, Silica Complex with Horsetail Extract, Structural Support, 180 Tablets $22.28 Was $28.43 12.4 ¢/count
$2228current price $22.28, Was $28.43$28.4312.4 ¢/countNOW Supplements, Silica Complex with Horsetail Extract, Structural Support, 180 Tablets
414.3 out of 5 Stars. 41 reviews
Customer ratings & reviews
How item rating is calculated
Filtered and sorted results would be available on the new 'Customer ratings & reviews' page.
Sort by |
Showing 1-3 of 16 reviews
Oct 30, 2025
Pamela
Top Reviewer
5 out of 5 stars review
Verified Purchase
Now is my favorite brand!
I'm new to this product but I have heard great things about it. Especially in winter months, I try to help my respiratory system by giving it a boost. The capsules are large but I have no difficulties swallowing them myself ... others that have a hard time with large pills may have a harder time. I really like the fact this has zinc as another ingredient.
Incentivized Review
Helpful?2T6488XZ1STE2842007476
Jun 28, 2025
Sarah
5 out of 5 stars review
Verified Purchase
I love the NOW Brand Supplements and Vitamins. They are easily digestible and don't irritate my stomach. I've been taking them for several years. I like when they combine a couple of the vitamins and minerals together like with this NAC, Quercentin and Zinc.
Incentivized Review
Helpful?2T6488XZ1STE2842007476
Jul 26, 2025
Kevin
5 out of 5 stars review
Verified Purchase
All-in-1 Zinc, Quercetin, and NAC!
I was purchasing these three products separately until I found this one that has the same amounts all in 1 capsule. Much more efficient and a perfect anti-viral supplement that's easy to take.
Incentivized Review
Helpful?2T6488XZ1STE2842007476
