Quercetin is a natural plant compound found in foods like apples, onions and berries.
You may not have heard of it before, but it’s one of the most important antioxidants for heart health, immunity and fighting inflammation. It has an especially big impact on the severity of allergies (such as seasonal allergies).
So, if you often suffer from sniffles, rashes, brain fog, or aches, it could be a sign your body is missing quercetin. The truth is that most people don’t get enough quercetin, and the consequences can be very uncomfortable.
Long-term quercetin deficiency can even lead to deadly chronic diseases like heart disease.
The good news is that it’s easy to boost your levels with a liposomal quercetin supplement.
Read on to learn more about quercetin, its sources and the signs that your body is running low.
If you have experienced any of these signs, it may be time to add more quercetin to your diet.
What is Quercetin?
Quercetin is a type of natural compound called a flavonoid. Flavonoids are found in many fruits, vegetables, tea and other plant-based foods. They give plants their color and also protect them from damage.
In your body, quercetin does something similar—it helps protect your cells from stress and inflammation. Like most flavonoids, Quercetin is an antioxidant.
This means it fights toxins in the body called free radicals. It also has strong anti-inflammatory effects, helping to calm the body’s response to chronic inflammation, which is linked to many long-term health conditions.
But quercetin doesn’t stop there. It also plays an important role in:
- Supporting immune function
- Easing allergy symptoms
- Protecting heart health
- Improving brain function
- Supporting lung and respiratory health
You can find quercetin in apples, onions, berries, grapes, kale and green tea. Even though it’s found in many healthy foods, you need it every day to benefit from its powers. And, it’s not always easy for the body to absorb.
For these reasons, many people may be suffering from symptoms of low quercetin without knowing it.
12 Symptoms of Low Quercetin
Quercetin supports many systems in the body, so a deficiency can manifest in a variety of ways.
If you recognize any of the following symptoms, your body may not be getting enough quercetin.
This is especially likely if your diet is low in antioxidant-rich fruits and vegetables.
Frequent Allergies or Seasonal Hay Fever
If your allergy symptoms are flaring up more than usual (think sneezing, itchy eyes, or congestion), low quercetin may be to blame.
Quercetin is a natural antihistamine. It stabilizes immune cells that trigger allergic reactions, controlling the body’s release of histamines (the culprits behind allergy symptoms) [1]. Without enough quercetin, your body may overreact to pollen, dust and other common allergens.
Chronic Inflammation or Pain
Ongoing aches, swelling and stiffness are symptoms of chronic inflammation, a common issue linked to low antioxidant levels. Quercetin has been found to calm inflammation at the cellular level, protecting your organs and joints from damage [2]. If you deal with daily pain, especially in your joints or muscles, liposomal quercetin may help reduce these symptoms.
Frequent Colds or Flu
A weak immune system can’t fight back against colds, flus and other seasonal bugs. As a natural antihistamine and anti-inflammatory, quercetin is one of the strongest immunity-boosting antioxidants. It helps strengthen immune defenses, and it has even been found to fight viruses [3]. When you do get sick, quercetin boosts the performance of immune cells and may help you recover faster [4].
Joint Pain or Stiffness
Oxidative stress (cellular damage caused by free radicals) and inflammation are major contributors to joint pain and stiffness. Antioxidants like quercetin are effective at fighting both. Quercetin is especially helpful for people with conditions like arthritis, as it helps reduce inflammation in the joints. It also supports healthy cartilage and tissue repair, making it easier to move without discomfort.
Fatigue / Low Energy
Do you feel exhausted even when you get enough sleep? This could be a sign that your body lacks the nutrients it needs to support your metabolic health. Quercetin has been found to improve the function of mitochondria (your cells’ power stations). This jump-starts your energy at the cellular level. Quercetin is so effective at boosting energy that it’s been found to improve athletic endurance and performance [5].
Brain Fog / Cognitive Decline
Brain fog can make it hard to focus, but it also affects your mood, memory and energy. These signs of brain fog can be linked to oxidative stress in the brain. If they become chronic, they can lead to cognitive decline and put you at risk of neurodegenerative disease.
Quercetin has been shown to protect brain cells and support better mental clarity by reducing inflammation in the brain [6]. Studies have suggested that it may reduce your likelihood of developing age-related neurological disorders, keeping you sharp as you get older.
Respiratory Issues (Asthma, Wheezing)
Inflammation in the airways can lead to coughing, wheezing and tightness in your chest. Quercetin’s natural anti-inflammatory and antioxidant properties support lung function and protect against lung damage [7]. This makes it especially helpful for those with seasonal breathing problems or mild asthma.
Frequent Migraines / Headaches
Recurring headaches and migraines are linked to inflammation in the brain. Quercetin helps by calming inflammatory pathways that may trigger these painful episodes. It also improves circulation in the brain, which can alleviate headaches [6]. If you find yourself reaching for pain relievers often, liposomal quercetin may offer a more consistent (and safer) form of relief.
Poor Skin Health (Acne, Eczema, Psoriasis)
Your skin often reflects what’s happening inside your body. Conditions like acne, eczema, or psoriasis can be indicators of inflammation or oxidative damage happening at a deeper level.
As a powerful antioxidant, quercetin protects against UV damage, promotes skin healing and contributes to younger, firmer skin. Studies have found it to have a significant impact on many facets of skin health [8]. If your acne or other skin issues just won’t clear up, quercetin may be an internal solution for external symptoms.
Digestive Issues (IBS, Bloating, Gas)
Digestive discomfort such as bloating, gas, or irritable bowel symptoms can often be caused by inflammation in the gut lining.
Quercetin helps soothe this inflammation in the gut and improve the function of the intestine [9]. It has also been found to have a probiotic effect by improving the diversity of the gut microbiome [10]. These effects contribute to overall digestive health and may reduce flare-ups and discomfort in those suffering from digestive issues.
High Blood Pressure
If your blood pressure tends to run high, low levels of quercetin might be part of the issue. Quercetin has been shown to support healthy blood vessel function by improving circulation and reducing inflammation. It also helps relax blood vessels, which can promote healthier blood pressure. Taking more quercetin has been found to lower the risk of cardiovascular disease, the nation’s #1 cause of death [11].
Increased Sensitivity to Environmental Stressors (Pollution, Chemicals)
If exposure to pollution or strong smells leaves you feeling allergic or irritated, your body may be struggling with oxidative stress. Quercetin helps to neutralize toxins from your environment, such as pollution, second-hand smoke and even UV radiation.
This protects your cells from damage and shields you from the long-term effects of exposure.
Protect Your Heart—And Much More—With Liposomal Quercetin
It’s likely that at some point, you’ve suffered from a symptom of low quercetin.
The American diet doesn’t supply enough quercetin to meet your body’s daily needs, especially during times of stress or illness.
If you’re not eating multiple servings of fresh fruits and vegetables each day, you’re not getting the flavonoids and antioxidants you need to stay healthy. Adding a quercetin supplement to your routine is a smart way to fill in nutritional gaps in your diet.
Unfortunately, many quercetin supplements are not formulated for bioavailability. This means your body can’t easily absorb the nutrition it needs.
Quercetin needs liposomes to help your body absorb it effectively. Liposomal delivery is a method that wraps nutrients in microscopic bubbles called liposomes. They protect the nutrient as it travels through your digestive system, helping more of it reach your bloodstream.
Manna Liposomal Quercetin is formulated by scientists to help your body absorb up to 10 times more quercetin with every dose.
If you’re looking for a way to protect your body from daily stressors and improve your long-term health, Manna Liposomal Quercetin is a smart, science-backed choice.
FAQ
Quercetin is a powerful antioxidant flavonoid found in fruits and vegetables. It protects your cells from damage, reduces inflammation, supports heart health, boosts immunity, and helps manage allergies.
Common symptoms include frequent allergies, brain fog, chronic inflammation, joint pain, fatigue, digestive issues, and respiratory problems like asthma or wheezing.
You can boost quercetin levels by eating foods rich in it, such as apples, onions, berries, grapes, kale, and drinking green tea. However, supplements can offer a more concentrated dose.
Modern diets often fall short of providing enough quercetin, and the body doesn’t always absorb it well from food alone. Supplements, especially liposomal ones, ensure better absorption and effectiveness.
Liposomal quercetin uses microscopic fat bubbles (liposomes) to protect and deliver quercetin into the bloodstream, enhancing absorption up to 10 times compared to standard forms.
Sources:
- https://pmc.ncbi.nlm.nih.gov/articles/PMC6273625/
- https://www.mdpi.com/2218-273X/15/1/151
- https://pmc.ncbi.nlm.nih.gov/articles/PMC8662201/
- https://www.longdom.org/open-access/quercetin-a-promising-treatment-for-the-common-cold-9478.html
- https://www.theguardian.com/sport/2009/oct/18/quercetin-energy-supplement
- https://pmc.ncbi.nlm.nih.gov/articles/PMC10094159/
- https://www.dovepress.com/quercetin-a-flavonoid-with-potential-for-treating-acute-lung-injury-peer-reviewed-fulltext-article-DDDT
- https://pubmed.ncbi.nlm.nih.gov/39738831/
- https://pmc.ncbi.nlm.nih.gov/articles/PMC9816806/
- https://www.sciencedirect.com/science/article/pii/S2772753X24001217
- https://iadns.onlinelibrary.wiley.com/doi/full/10.1002/fft2.434
