Quercetin 20× Plus by Xymogen

Overview

The Xymogen Quercetin 20× Plus is a professional-grade supplement formulated with enhanced-bioavailability quercetin (as Quercefit® Phytosome™) along with supportive nutrients. It is designed to help support respiratory comfort, nasal passage ease, and cellular antioxidant protection. 

Key Features & Benefits

Enhanced Quercetin Bioavailability

Featuring Quercefit® (a quercetin-phospholipid complex), this formula offers improved absorption compared to standard quercetin—one study reported up to ~20× higher Cₘₐₓ and ~18× higher AUC vs unformulated quercetin. This means the quercetin component is more available for the body to utilize.

Respiratory & Nasal-Support Blend

The formula includes quercetin, nettle extract (Urtica dioica/Urtica urens), and N-acetyl-L-cysteine (NAC), which together target pathways involved in immune-reactive and respiratory/nasal comfort processes. 
For example, the product literature notes use for “respiratory system, including nasal passages.

Antioxidant & Immune-Support Elements

With 200 mg of vitamin C per serving (2 capsules), in addition to the quercetin complex and NAC, this formula provides antioxidant-supporting nutrients to help protect cells from oxidative stress. 

Clean Formulation

According to the label, this product is formulated to exclude wheat, gluten, yeast, soy, animal and dairy products, fish/shellfish, peanuts, tree nuts, egg, sesame, GMO-derived ingredients, artificial colors, and sweeteners. 

Who It’s For

This supplement is ideal for individuals looking for targeted support of respiratory comfort, nasal passage ease, and general antioxidant support within a clean-label, professional-grade formula. It may appeal to those experiencing seasonal respiratory or nasal challenges, or who want enhanced quercetin bioavailability in their supplement regimen.
(Note: This is not a treatment for illness and is intended for nutritional support only.)

How It Fits Into a Healthy Routine

Typically, take two capsules daily (unless otherwise directed by a healthcare professional). You might incorporate it as part of a broader wellness plan that includes a balanced diet, hydration, quality sleep, and regular physical activity. For instance, during times of increased seasonal stress, travel, or environmental exposure—this supplement may complement your lifestyle-support strategy.
Always consult your healthcare provider before beginning any new supplement, especially if you are taking medications or have pre-existing conditions.

What’s Inside

Here is the high-level ingredient summary based on the Supplement Facts label (serving = 2 capsules) from Xymogen:

• Vitamin C (ascorbic acid): 200 mg

• Quercetin Phospholipid (Quercefit® Phytosome™): 250 mg

• Nettle Extract (Urtica dioica and/or Urtica urens) (leaves): 200 mg

• N-Acetyl-L-Cysteine (NAC): 100 mg

• Other Ingredients: hypromellose capsule, ascorbyl palmitate, silica

• Formulated to exclude common allergens/undesirables (see above)