5/25/2025
Last update
5/25/2025
Reviewed By
Overview
SCIENTIFIC SCORE
No researches found
N/A
USERS' SCORE
Good
Based on 4 Reviews
8.6
Supplement Facts
Serving Size: 1 Vegetarian Capsule
Amount Per Serving
%DV
Vitamin C (from ascorbic acid, camu-camu berry extract)
30 mg
33%
Quercetin (as quercetin dihydrate)
250 mg
**
Optimized Food Blend[onion (bulb) (extracts), bitter orange bioflavonoids (peel and fruit), apple (fruit)
220 mg
**
Camu-camu extract (wildcrafted berry)
50 mg
**
Most Useful Reviews
9
Increased energy noted
204 people found this helpful
I have experienced increased energy and strength. After two weeks of taking Quercetin, my shortness of breath disappeared, allowing me to walk and talk quickly without straining! Additionally, Quercetin greatly improved my immunity, alleviating pain, and I noticed relief from chronic rhinitis as my runny nose has stopped bothering me!
Read More
9
Improved immunity
3 people found this helpful
I have noticed heightened energy and strength since starting Quercetin. After two weeks, my shortness of breath is gone, and I can walk and speak without difficulty! I also felt an improvement in my immunity and chronic rhinitis, with my runny nose becoming a thing of the past.
Read More
9
Fatigue reduction felt
2 people found this helpful
Quercetin has been excellent for my entire health following COVID-19 with symptoms of weakness and increased fatigue. After 1.5 weeks, my lethargy diminished significantly, and after three weeks, I felt no fatigue at all. I will continue using it as protection against oxidative stress—definitely a product I highly recommend!
Read More
User Reviews
USERS' SCORE
Good
Based on 4 Reviews
8.6
- All Reviews
- Positive Reviews
- Negative Reviews
9
Increased energy noted
204 people found this helpful
I have experienced increased energy and strength. After two weeks of taking Quercetin, my shortness of breath disappeared, allowing me to walk and talk quickly without straining! Additionally, Quercetin greatly improved my immunity, alleviating pain, and I noticed relief from chronic rhinitis as my runny nose has stopped bothering me!
Read More
9
Improved immunity
3 people found this helpful
I have noticed heightened energy and strength since starting Quercetin. After two weeks, my shortness of breath is gone, and I can walk and speak without difficulty! I also felt an improvement in my immunity and chronic rhinitis, with my runny nose becoming a thing of the past.
Read More
9
Fatigue reduction felt
2 people found this helpful
Quercetin has been excellent for my entire health following COVID-19 with symptoms of weakness and increased fatigue. After 1.5 weeks, my lethargy diminished significantly, and after three weeks, I felt no fatigue at all. I will continue using it as protection against oxidative stress—definitely a product I highly recommend!
Read More
6
Energy levels up
This Optimized Quercetin by Life Extension has been key to my well-being, supporting my immunity and enhancing my overall health. The convenient vegetarian capsules allow me to easily manage my intake, and long-term use has noticeably improved my energy levels, while also reducing fatigue and stress.
Read More
Frequently Asked Questions
9
Fatigue reduction felt
2 people found this helpful
Quercetin has been excellent for my entire health following COVID-19 with symptoms of weakness and increased fatigue. After 1.5 weeks, my lethargy diminished significantly, and after three weeks, I felt no fatigue at all. I will continue using it as protection against oxidative stress—definitely a product I highly recommend!
9
Increased energy noted
204 people found this helpful
I have experienced increased energy and strength. After two weeks of taking Quercetin, my shortness of breath disappeared, allowing me to walk and talk quickly without straining! Additionally, Quercetin greatly improved my immunity, alleviating pain, and I noticed relief from chronic rhinitis as my runny nose has stopped bothering me!
6
Energy levels up
This Optimized Quercetin by Life Extension has been key to my well-being, supporting my immunity and enhancing my overall health. The convenient vegetarian capsules allow me to easily manage my intake, and long-term use has noticeably improved my energy levels, while also reducing fatigue and stress.
9
Improved immunity
3 people found this helpful
I have noticed heightened energy and strength since starting Quercetin. After two weeks, my shortness of breath is gone, and I can walk and speak without difficulty! I also felt an improvement in my immunity and chronic rhinitis, with my runny nose becoming a thing of the past.
