Life Extension Fast-C® and Bio-Quercetin®, Fast delivery and Absorption, Vitamin C, Fenugreek, Immune Support, Magnesium, Gluten-Free, Non-GMO, Vegetarian, 60 Tablets

Price: $19.50
(as of Mar 11, 2026 12:40:51 UTC – Details)


Fast-C® and Bio-Quercetin® is a novel formula for immune, cardiovascular, and antioxidant support. Our formula contains absorbable vitamin C with our Bio-Quercetin®, which combines quercetin fenugreek seed fibers to increase bioavailability up to 62x compared to standard quercetin. Fast-C® and Bio-Quercetin® contains 60 vegetarian tablets, enough for a 1–2-month supply. Non-GMO, gluten-free and manufactured in the USA.
Product Dimensions ‏ : ‎ 4.19 x 0.75 x 4.25 inches; 3.2 ounces
Item model number ‏ : ‎ 02229
Date First Available ‏ : ‎ December 27, 2018
Manufacturer ‏ : ‎ Life Extension
ASIN ‏ : ‎ B07N1B1L1D
Best Sellers Rank: #115,384 in Health & Household (See Top 100 in Health & Household) #84 in Quercetin Antioxidant Supplements
Customer Reviews: 4.6 4.6 out of 5 stars (276) var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
Supports immune system health – Vitamin C supports immune health, heart health, iron uptake, collagen formation and more. Quercetin also supports both immune and cardiovascular health.
Absorption and bioavailability – We use black pepper extract to enhance vitamin C bioavailability. Plus, our Bio-Quercetin is up to 62x more bioavailable than standard quercetin formulations.
Protecting sensitive stomachs – Contains a novel calcium-magnesium mineral complex to help neutralize acid and promote vitamin C absorption—without stomach discomfort.
Ingredients matter – We use the finest raw ingredients with the quality and purity you deserve. The majority of our products are non-GMO, gluten-free and manufactured in the USA—and a Certificate of Analysis is available for every one. 
Live your healthiest life – We believe the answers to a healthier life are in reach, and that scientific research is the key to getting there. That’s why so many of our formulas feature specific ingredients and amounts based on scientific studies.