Page 1 - Reviews - Source Naturals, Activated Quercetin™, 200 Capsules - iHerb
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Customer Ratings & Reviews

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4.7
Based on 1,772 ratings
1,435
232
73
16
16
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What customers say
(118)
 
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English (UK)
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seesawpalmetto
Silver
Posted on 9/08/2025
United Kingdom
153
0
0
11
Great for flu season
Verified Purchase
Essential for flu season, a great tool in the arsenal.
Auto-translated from English
iHerbCustomer
Silver
Posted on 10/06/2026
United Kingdom
132
0
0
1
Anti-inflammatory
Verified Purchase
I've heard it can reduce inflammation and boost immunity; I'm still observing it.
Auto-translated from Chinese Traditional
iHerbCustomer
Silver
Posted on 19/12/2025
Belgium
245
0
3
116
Good composition
Verified Purchase
I buy many products every month, and it would be overwhelming to review them all individually. That's why I created this template. If you're reading this, it means I'm very satisfied with this product and that future buyers can buy with confidence. Of course, I'm not an irresponsible buyer; if the product isn't good, I'll also take the time to write a good review.
Auto-translated from Dutch
SarahK444
Silver
Posted on 3/03/2026
United States
197
0
0
56
Cold season
Verified Purchase
Great to add for immune support. This antioxidant helps with inflammation and detoxing when germs are spreading helps keep me feeling healthy & strong! No weird taste & trust this brand.
Auto-translated from English
Grey
Silver
Posted on 7/10/2025
Ukraine
114
0
0
8
Excellent!
Verified Purchase
Good quercetin. Very convenient packaging format. Lasts a very long time
Auto-translated from Ukrainian
iHerb Customer
Silver
Posted on 12/11/2025
Taiwan
146
2
2
18
Verified Purchase
The quality is good, and each capsule contains vitamin C, magnesium citrate, quercetin, and bromelain. The packaging is good and the size is small. It is used as an alternative to antihistamines and has the benefits of helping the respiratory system and reducing inflammation.
Auto-translated from Chinese Traditional
iHerbCustomer
Gold
Posted on 26/11/2025
United States
2,901
143
4
1,186
For immunity
Verified Purchase
I take quercetin from Source Naturals to support my immune system, blood vessels, and cellular health. Quercetin is a plant-based flavonoid antioxidant that helps protect cells from oxidative stress and supports vascular health and the immune system. Quercetin reduces inflammation and helps the body better cope with viral infections. I take one capsule in the morning after breakfast. The effect is cumulative: I feel my immune system is stronger, my joints are less bothersome, they creak less, and my skin looks a little smoother.
Auto-translated from Russian
iHerb Customer
Posted on 2/11/2025
Bosnia and Herzegovina
38
0
0
4
Great!!!
Verified Purchase
This supplement comes in easy-to-swallow capsules, with each serving delivering 1 g quercetin plus bromelain, vitamin C and magnesium to support immune and seasonal balance. Good ingredient ! The packaging is straightforward and available in multiple sizes. Quality feels solid, and capsules have jo taste. Many benefits. So i recommend this quercetin.
Auto-translated from English
iHerb Customer
Posted on 28/08/2025
China
4
1
0
1
very good
Verified Purchase
Quercetin is a good portion, well-packaged, and of good quality. It's very effective for the respiratory system, and it's exactly what I need. 🟢 Function 1. Antioxidant Effect: Quercetin has powerful antioxidant properties, neutralizing free radicals and reducing oxidative stress, thereby protecting cells from damage. This helps prevent a variety of chronic diseases, including cardiovascular disease and certain types of cancer. 2. Anti-inflammatory Effect: Quercetin can inhibit the inflammatory response and reduce the release of inflammatory mediators, thereby alleviating inflammatory symptoms. This may be beneficial for relieving arthritis, inflammatory bowel disease, and other inflammatory conditions. 3. Antiviral Effect: Studies have shown that quercetin has antiviral properties and can inhibit the replication of various viruses, including influenza, hepatitis B, and certain coronaviruses.
Auto-translated from Chinese Simplified
iHerb Customer
Gold
Posted on 20/08/2025
Kazakhstan
1,187
1
0
54
Verified Purchase
, who prefer comfort in the off-season, can enjoy the great outdoors with confidence thanks to Activated Quercetin™, an advanced complex containing 1,000 mg of quercetin per serving. This unique bioflavonoid has been shown in preliminary studies to inhibit histamine release and support a healthy inflammatory and immune response. Key additional ingredients such as pineapple enzyme bromelain, magnesium citrate and vitamin C activate and optimize the benefits of quercetin, as well as provide immune, respiratory and antioxidant support. Not all inflammation is due to disease-causing conditions. Inflammation is the body’s healthy immune response.
Auto-translated from Russian