Quercetin is a naturally occurring free radical scavenger that supports a balanced immune system response in the face of seasonal immune challenges.* Clinical studies have demonstrated that it can also help to promote normal respiratory function and maintain comfortable breathing.* Quercetin may also help to enhance exercise performance and recovery and alleviate pain due to overexertion.* This quercetin phytosome is encased in a phospholipid sphere to make it up to 20 times more bioavailable than standard quercetin.