Introduction

Quercetin is a natural food polyphenol with potential effectiveness in decreasing weight gain and obesity. It is found in fruits and vegetables, including onions, apples, and kale.

Studies have also revealed that quercetin may be advantageous in diminishing the risk of heart disease, cancer, and stroke.

Quercetin is found in the peel of apples, but you can maximize your input by consuming the whole fruit rather than drinking apple juice.

The peels have an increased concentration of quercetin than the flesh. So if you eat the whole apple rather than just consuming its juice, your body absorbs more.

The best quercetin plus supplement in Singapore is an antioxidant that resists free radicals in the body. Free radical impairment has been linked to cancer and heart disease. It also allows you to increase your immune system and decrease inflammation.

Onions, citrus fruits, and tea also contain quercetin. It is sold in the form of capsules or tablets under different brand names as a dietary supplement.

The best quercetin supplements in Singapore are much more potent than the quercetin you encounter naturally in food sources. Therefore, take quercetin pills to decrease the risk of cancer and heart disease.

Quercetin Plus Supplements in Singapore

Our pick of the 8 best quercetin supplements of 2024 in Singapore

Let's take a deep dive into these 8 best Quercetin Plus Supplements in Singapore

Best Overall Quercetin Plus Supplements in Singapore

Clean Nutraceuticals

A+

Zotezo review

The “Immune Defense Support Supplement 8 in 1” is a comprehensive product that combines essential nutrients like Zinc, Quercetin, Vitamin C, Vitamin D3, Elderberry, Turmeric Curcumin, Ginger, and Echinacea in one convenient pill. While highly effective in supporting immunity and health, it may be overwhelming for those who prefer individual supplements or have difficulty taking multiple pills at once.

Product details

  • Contains Zinc 50mg

  • Includes Quercetin

  • Provides Vitamin C 1000mg

  • Contains Vitamin D3 5000 IU

  • Includes Elderberry

  • Contains Turmeric Curcumin, Ginger, and Echinacea

Benefits of Immune Defense Support Supplemen...

  • Replaces multiple individual supplements

  • Highly effective in keeping users healthy

  • Contains a wide variety of essential nutrients

Drawbacks

  • May be overwhelming for those not comfortable taking multiple supplements in one pill

  • Some users may prefer individual supplements for specific needs

A+

Zotezo review

The NOW Foods Supplements Quercetin with Bromelain offers fast delivery and supports a healthy immune system with the added benefits of Bromelain. However, it may not be effective for all users and could potentially fall short of some customers’ expectations.

Product details

  • Quercetin for healthy seasonal immune system function

  • Free radical scavenger properties

  • Supports normal respiratory function

  • Contains Bromelain for additional benefits

Benefits of NOW Quercetin with Bromelain, 24...

  • Fast delivery

  • Supports healthy immune system

  • Contains Bromelain for additional benefits

Weaknesses

  • May not work for everyone

  • Some customers may have different expectations

A+

Zotezo review

The Ultra High Purity Quercetin Capsules offer a highly purified and bioavailable form of quercetin with a substantial 1000mg per serving. However, the large pill size may pose challenges for some users, and the capsules not dissolving in water can make consumption a bit messy.

Product details

  • Ultra High Purity Quercetin Capsules

  • 95%+ Highly Purified and Highly Bioavailable

  • 1000mg Per Serving

  • 120 Capsules Quercetin Supplement

Benefits of High Purity Quercetin Capsules &...

  • Highly purified and bioavailable

  • Contains 1000mg per serving

  • 120 capsules in a bottle

Disadvantages

  • Large pill size may be difficult to swallow for some users

  • Capsules do not dissolve in water, making them a bit messy to consume

A+

Zotezo review

Source Naturals Activated Quercetin is a potent seasonal and immune defense supplement that features quercetin, a natural histamine blocker, and bromelain for added immune support. While effective, some customers have reported packaging issues and potential sleep disturbances if taken at night.

Product details

  • Seasonal support supplement

  • Features quercetin, a natural histamine blocker

  • Inhibits histamine release

  • Contains bromelain for immune support

Benefits of Source Naturals Quercetin Immune...

  • Provides seasonal support

  • Contains quercetin, a natural histamine blocker

  • Inhibits histamine release

  • Includes bromelain for immune support

Negatives

  • Packaging issues reported by some customers

  • May cause sleep disturbances if taken at night

A+

Zotezo review

The ProHealth 1,000 mg Trans-Resveratrol offers a high dosage of pure trans-resveratrol with enhanced absorption technology, making it an effective supplement. However, potential side effects and individual suitability should be considered before use.

Product details

  • 1,000 mg Trans-Resveratrol

  • 99.5% Pure

  • 15X Better Absorption

  • 420mg Polyphenol Complex (Quercetin, Red Wine & Green Tea Extracts, BioPerine)

Benefits of ProHealth Trans-Resveratrol with...

  • High dosage of 1,000 mg Trans-Resveratrol

  • 99.5% purity

  • Enhanced absorption with 15X better absorption technology

Cons

  • Potential side effects like headrush sensation reported by some users

  • Not suitable for all individuals, may not work for everyone

A+

Zotezo review

The “(90 Capsules), NAC 600mg, Quercetin 1,000mg, Vitamin C 500mg, Zinc 50mg, Vitamin D3 5,000iu, Selenium, Copper, Acerola, Ginger, Rutin, Citrus Bioflavonoids, Rose Hips, Echinacea, Immune N Plus 13 in 1” supplement offers a convenient and comprehensive blend of immune-supporting ingredients in one capsule, making it travel-friendly and simplifying immune system maintenance. However, it may not cater to individualized dosages and dietary restrictions.

Product details

  • NAC 600mg

  • Quercetin 1,000mg

  • Vitamin C 500mg

  • Zinc 50mg

  • Vitamin D3 5,000iu

  • Includes Selenium, Copper, Acerola, Ginger, Rutin, Citrus Bioflavonoids, Rose Hips, Echinacea

Benefits of Immune N Plus 13-in-1 Supplement

  • Convenient for travel

  • Contains multiple high-quality ingredients in one capsule

  • Simplifies immune system support by reducing the number of pills needed

Drawbacks

  • May not provide customized dosages for individual vitamins and minerals

  • Contains multiple ingredients, which may not be suitable for those with specific dietary restrictions

A

Zotezo review

The Immune Support Quercetin with Bromelain Supplement offers a comprehensive blend of quercetin and bromelain to boost the immune system, support joint health, and provide antioxidant properties. Users have reported improved energy levels, allergy and asthma symptom management, and enhanced focus, making it an affordable and effective option for immune support. Some users experienced initial slow responses or minor nasal congestion issues.

Product details

  • Immune system booster

  • Protective properties

  • Joint support

  • Antioxidant supplement

  • Lung health support

Benefits of Immune Support Quercetin with Br...

  • Improved energy levels

  • Helps manage allergies and asthma symptoms

  • Boosts focus without crashing

  • Supports immune health

  • Affordable supplement option

Weaknesses

  • Initial slow response for some users

  • Partially blocked nose issue persisted for one user

B

Zotezo review

The Natural Eye Health Vitamins with Bilberry Zeaxanthin Lutein – Macular Support Supplement offers a comprehensive formula based on AREDS2® Clinical Trials, including key ingredients like Bilberry, Zeaxanthin, and Lutein for eye health benefits. The addition of Carotenoids Quercetin and EGCG provides extra eye support, making it a convenient and effective supplement for maintaining good eye health.

Product details

  • NSF Certified to ensure ingredient accuracy and quality control

  • Formulated based on AREDS2® Clinical Trials for macular support

  • Contains Bilberry, Zeaxanthin, and Lutein for eye health benefits

  • Includes Carotenoids Quercetin and EGCG for additional eye support

  • Macutene® Protect formula for comprehensive eye health protection

  • 60 Capsules for a convenient and easy-to-use supplement regimen

Benefits of Macutene Protect – Eye Hea...

  • Formulated based on AREDS2® Clinical Trials for macular support

  • Contains Bilberry, Zeaxanthin, and Lutein for eye health benefits

  • Includes Carotenoids Quercetin and EGCG for additional eye support

Disadvantages

  • May cause temporary color contrast issues for some users

  • Non-English language content in reviews may require translation

Tips for choosing the right quercetin supplements for you

There is a lot of research required to choose the best quercetin plus supplements in Singapore. We have made it easier for you. First, learn about the main factors you should check while buying.

Dosage and potency

The precise dose relies on the strength, form and brand of the quercetin supplement you buy. Generally, two capsules a day is suggested. Read the instructions on the label with due care before fixing on dosage.

Potency can also alter, but most capsules range from 500 to 1,200 milligrams. Many brands suggest taking quercetin supplements with a glass of water. It helps your body absorb the compound faster.

Form

The best quercetin plus supplements in Singapore are normally available in capsule or tablet form. However, if you do not like taking pills, you can buy the supplement in powder or liquid form.

You can add the powder or liquid to a drink or mix it into food. Some brands also trade quercetin in a chewable or gummy form, a great option for kids.

Vegan

Some capsule casings contain gelatin, which is an animal by-product. If you obey a vegetarian diet, look for supplements especially labelled vegan.

If you have no idea about the capsules, liquid and powder quercetin supplements are always entirely plant-based options.

Additional ingredients

Certain quercetin supplements contain additional ingredients in their formula to expand their antioxidant and anti-inflammatory properties.

Some supplements incorporate bromelain, an enzyme that enhances absorption, while other formulas comprise recognizable ingredients like vitamin C.

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Benefits of using quercetin supplements

Reduces Inflammation

Inflammation is your body’s natural reaction to stress and injuries. It usually helps your body heal. However, chronic inflammation can be dangerous to your body and contribute to health conditions.

However, quercetin might support reducing inflammation. One study trusted Source on animals found that quercetin controlled both acute and chronic inflammation, complementing to show anti-arthritis properties.

Results from human studies have provided mixed results. For example, while research-Trusted Source on healthy male athletes saw that quercetin could lower inflammation, it did not have the same effect in women with rheumatoid arthritis.

Prevents neurological diseases

The best quercetin plus supplements in Singapore may aid control neurodegenerative diseases, such as Alzheimer’s or Parkinson’s disease.

Oxidative stress contributes to the growth of neurodegenerative diseases. Oxidative stress happens when there is an imbalance of free radicals in the body. The antioxidant effects of quercetin may support the fight against free radicals.

Research on rats demonstrated that quercetin could guard against oxidative stress. It also showed quercetin could guard against the harmful effect of certain metals on the nervous system.

Reduces cancer risk

Quercetin may have anticancer properties that might prevent the spread of cancerous cells and tumour growth. ResearchTrusted Source has revealed that a diet heightened in flavonoids, such as quercetin, can help avert cancers. Fruits and vegetables are full of flavonoids, so raising the intake of these foods might lower the risk of many types of cancer.

A 2015 report found that quercetin delayed the growth of prostate cancer cells in mice and rats. A 2018 in vitro study trusted source showed that quercetin exhibited promise in both the treatment and deterrence of prostate cancer. 

In vitro means the researchers experimented outer of a living thing, for example, in a test tube. Researchers are still required to find out more about the anticancer properties of quercetin in humans and to confirm whether the body can absorb high doses of quercetin effectively.

Reduces the risk of heart diseases

Diet plays a vital role in diminishing the risk of cardiovascular diseases, such as heart disease and strokes. As fruit and vegetables possess flavonoids, consuming more of them can decrease the risk of these diseases.

Quercetin may be a better-trusted source of blood vessel cell health and blood flow via arteries in people with heart disease.

Eases allergy symptoms

The best quercetin plus supplements in Singapore have anti-inflammatory properties that may provide allergy symptom relief.

Test-tube and animal studies discovered that it blocks enzymes concerned with inflammation and suppress inflammation-promoting chemicals, such as histamine. One study revealed that taking quercetin supplements concealed peanut-related anaphylactic reactions in mice.

Still, it’s vague whether the compound has the same effect on allergies in humans, so more research is required before it is recommended as an alternative treatment.

Side-effects of using Quercetin Plus Supplements

Quercetin supplements may cause mild side effects in some people. These can include upset stomach, nausea, diarrhea, or Headache. Some folks might also experience tingling sensations or dizziness. It’s essential to start with a low dose and gradually increase it to see how your body responds. If you notice any uncomfortable symptoms, stop taking it and talk to a doctor. Always read the instructions and consult a healthcare professional before starting any new supplement to ensure it’s safe for you.

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Frequently asked questions on quercetin supplements

1. What is the most bioavailable form of quercetin?

2. How long can you safely take quercetin?

3. Should quercetin be taken on an empty stomach?

4. Does quercetin affect sleep?

5. Does quercetin cause weight gain?

6. Who should not take quercetin?

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Conclusion

The best quercetin plus supplement in Singapore is one of the most abundant antioxidants in the diet. It plays an important role in helping your body combat free radical damage linked to chronic diseases.

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Dt. Mary Ahern

MS, RD

Dietitian verified

Mary Ahern, MS, RD is a registered dietitian and health writer who is passionate about plant-based nutrition and achieving better health by balancing time between the kitchen and the gym. Currently she's pursuing PhD from University of Arizona