Food supplement Rapid release softgel capsules Quality assured product CoQ10 appears naturally within almost every cell in the body, yet its production declines with age making dietary intake more important. The highest levels of CoQ10 can be found in tissues with high energy requirements such as the heart and skeletal muscles. Food supplement Rapid release softgel capsules Quality assured product CoQ10 appears naturally within almost every cell in the body, yet its production declines with age making dietary intake more important. The highest levels of CoQ10 can be found in tissues with high energy requirements such as the heart and skeletal muscles.