Perfect Quercetin


Perfect Quercetin is formulated with patented SunActive® IsoQ which is encapsulated for excellent solubility, absorbability and conversion to free quercetin in the body. Fortified with BioPerine® black pepper extract and immune-supporting vitamin C, Perfect Quercetin effectively supports immunity, heart health and provides superior antioxidant protection.

Title :

146 En stock

When the body is exposed to allergen for the first time, the immune system overreacts by producing antibodies, known as immunoglobulin E (IgE), which triggers the release of histamine from the mast cells. Histamine then causes these symptoms and are typically controlled with antihistamine medicine.


Quercetin is a naturally occurring flavonoid antioxidant found in many fruits and vegetables such as onions, apples, berries and red wine. Also considered a “plant pigment,” found in colored, nutrient-packed fruits and veggies, and a key ingredient common in superfoods. Research suggests that quercetin has excellent antihistamine, anti-inflammatory and immunity-boosting properties. 

SunActive® IsoQ is water-soluble and much more bioavailable than free quercetin. It is a soluble isoquercitrin, which is a precursor to quercetin. Chemically identical to isoquercetin found in nature; SunActive® IsoQ provides the much sought-after quercetin benefits with a lower dosage.

Lingering symptoms may indicate the body has not cleared the infection, or there could be some underlying inflammation in the body. Hence, boosting immune system and reducing inflammation is crucial.

Quercetin has excellent immune boosting and anti-inflammatory properties which could help mitigate these symptoms. This powerful flavonoid may prevent the virus from replicating in the body, improve memory impairment and cognitive function, as well as reduce cognitive and physical fatigue, which could help ameliorate brain fog and fatigue.

√ Provide antioxidant protection

√ Modulate body inflammation

√ Protect against gout

√ Supports cardiovascular health

√ Lower high blood pressure

√ Supports brain health

Protect against gastric conditions

Strengthen immune system

Mitigate patchy baldness


Perfect Quercetin is formulated with patented SunActive® IsoQ which is encapsulated for excellent solubility, absorbability and conversion to free quercetin in the body. Fortified with BioPerine® black pepper extract and immune-supporting vitamin C, Perfect Quercetin effectively supports immunity, heart health and provides superior antioxidant protection.


For those experiencing breathing difficulty, shortness of breath, wheezing and chest tightness Perfect Quercetin helps:
• Suppress contraction of airway (trachea)1
• Inhibit hypersecretion of mucus on the respiratory tract2
• Reduce airflow resistance during breathing3
• Inhibit the release of histamine from the immune system3
• Decrease allergen sensitisation and inflammation4
• Decrease allergen-induced airway hyperresponsiveness5 


1J Pharm Pharmacol. 2009;61(1):115–9
2 Am J Rhinol Allergy. 2010;24(2):e59–62
3 Arch Pharmacal Res. 2008;31(6):771
4 Am J Respir Cell Mol Biol. 2006;35(5):602–10, Int Immunopharmacol. 2009;9(3):261–7
5 Phytomedicine. 2012;19(2):115–21

For those experiencing sneezing, running, itchy & blocked nose, itchy eyes or hay fever Perfect Quercetin helps:
• Suppress production of chemicals in the body which are linked to inflammation, thereby improving the clinical condition of rhinitis1
• Reduce elevated level of IgE2. IgE is a hallmark indicator whereby the immune system reacts abnormally when exposed to allergens.2
• Reduce symptoms of rhinitis, including nasal rubbing movements and sneezing in an animal test3
• Increase thioredoxin production and inhibit nasal symptoms4. Thioredoxin (TRX) plays a role in reducing inflammation from seasonal challenges.

1 In Vivo. 2016;30(1):17–25
2 Ann Allergy Asthma Immunol. 2002;88(5):478–87
3 BMC Complement Altern Med. 2016;16(1):132
4 Medicines. 2018;5(4):124

For those experiencing reactive itchy skin or atopic dermatitis, Perfect Quercetin helps:
• Scavenge free radicals and protect human skin cells against oxidative stress skin damages1 
• Suppress Th2 cells which account for elevated IgE levels, which is associated with atomic dermatitis2 
• Attenuate edema and tissue damage of inflamed skin
• Suppress the increase in the levels of IgE and eosinophils, which are associated with atopic dermatitis4 
• Weaken the development of atopic dermatitis-like skin lesions and skin inflammation induced by house dust mite


1 Colloids Surf B. 2014;123:566–74
2 J Investig Dermatol. 2010;130(5):1459–63
3 Pharm Res. 2014;31(4):959–68
4 J Dermatol Sci. 2015;77(3):166–72
5 Exp Dermatol. 2015;24(6):418–23

Q. What is Quercetin?

A. Quercetin is a typical plant flavonoid (plant pigment) found in many plants and foods, particularly citrus fruits, apples, berries, onions, green tea, and red wine. This flavonoid is known to offer wide-ranging health benefits, including antioxidant, anti-inflammatory, anti-cancer, and anti-aging. Nonetheless, the wide application of quercetin is limited due to its poor solubility, low bioavailability, poor permeability, and instability. Numerous approaches have been adopted to improve solubility and bioavailability of quercetin.


Q. What is Perfect Quercetin?

A. Formulated with world-renowned SunActive® IsoQ, Perfect Quercetin provides a water-soluble, microencapsulated form of isoquercitrin (a quercetin precursor). SunActive® IsoQ is 25X more bioavailable than free quercetin, allowing a 100-mg dose of SunActive® IsoQ to deliver the equivalent of 275 mg of bioavailable quercetin, providing significant sought-after quercetin benefits with a lower dosage. In the body, SunActive IsoQ is then converted into quercetin.

Derived from rutin (plant pigment) extracted from the flower buds of the Japanese Pagoda tree (Styphnolobium japonicum Schott), SunActive® IsoQ is extracted into a water-soluble form via a patented, solvent-free enzymatic process. This isoquercitrin is chemically identical to isoquercetin found in nature. It is then microencapsulated which is clinically proven to enhance absorption and conversion to free quercetin in the body (J. Funct. Foods. 85: 104663 (2021)).

In addition to SunActive® IsoQ, Perfect Quercetin is formulated with vitamin C and BioPerine® black pepper extract, which further enhances its efficacy. Vitamin C, which is known to have immune-enhancing benefits, works synergistically with SunActive® IsoQ to modulate the immune system. And, BioPerine® black pepper extract further improves the bioavailability of SunActive® IsoQ. BioPerine® black pepper extract strongly inhibits the activity of UDP-glucuronosyltransferase enzymes (UGTs), which would otherwise break down quercetin in the blood plasma. This allows the quercetin to stay longer in the body for physiological effects.


Q. What are the health benefits of quercetin?

A. Quercetin has excellent antioxidant and immunomodulatory properties and is known for wide-ranging health benefits from immune and cardiovascular health to cellular health. This flavonoid regulates immune response naturally, which helps relieve discomfort from seasonal challenges, such as sinus, itchy skin, eyes, nose, and throats. In addition, it helps fight free radicals, support healthy inflammatory response, strengthen immune system, support healthy blood pressure and glucose, reduce risk of infections, neurodegenerative disorders, and heart disease. It also helps fight stress, improve endurance, physical performance, and overall wellness, including eye, heart, brain, liver, and joints.


Q. What makes Perfect Quercetin stand out from other quercetin supplements?

A. Despite quercetin’s excellent benefits, its efficacy is limited by its naturally poor water solubility and low bioavailability. SunActive® IsoQ overcomes these two challenges and delivers the sought-after quercetin health benefits with a lower dose. This water-soluble form of isoquercitrin (quercetin precursor) is 25x more bioavailable than quercetin. SunActive® IsoQ also employs a proprietary microencapsulation technology which improves its absorption by 4 times as compared to isoquercitrin in other forms.


Q. How does Perfect Quercetin help relieve seasonal challenges?

A. Histamine is a type of chemical that causes allergic reaction. Quercetin suppresses the production and release of histamine, as well as other allergic and inflammatory substances by the immune cells. In addition, it helps reduce allergen sensitisation. Collectively, it helps reduce allergy symptoms, including runny nose, itchy skin, eyes, throats, and swelling of the face and lips. In addition, it helps dilate the airways, thereby relieving breathing difficulty due to the allergen. 


Q. Can Perfect Quercetin be taken for long-term?

A. Yes. It is beneficial to consume Perfect Quercetin for long-term for overall wellness and health aging.


Q. Can I take Perfect Quercetin while on medications?

A. Yes, please keep at least 2-hour gap between Perfect Quercetin and medications to ensure the efficacy of Perfect Quercetin is not compromised.


Q. Does Perfect Quercetin require a prescription?

A. No, Perfect Quercitrin is a natural supplement and not a medicine. Hence, prescription is not required.


Veggie Caps

60 veggie caps


Active ingredients:

310mg SunActive® IsoQ (Cyclodextrin, Isoquercetrin, rhamnose), 70mg Vitamin C, 5mg BioPerine Black Pepper Extract

Other Ingredients:

Starch, Calcium Stearate


Maintenance: Take 1 veggie cap daily

2-12 Years: Take 1/2 veggie cap daily. If swallowing is difficult, open the capsule and mix the content with any beverage (eg: plain water, milk, soup)

Above 12 Years: Take 1 veggie cap daily.

For Sinus: Take 1 veggie cap at night. If you also experience sinus symptoms in the day-time, take 1 more veggie cap in the day.

Customer Reviews

Based on 5 reviews Write a review

Recently Viewed Products