As the levels of co-enzyme Q10 in your body naturally decline with age, these handy capsules from Swanson Health can help top up your levels. Co-enzyme Q10 is present in almost all tissues and cells in the body and is in particularly high concentration in the heart and muscle. Each capsule has 30mg of co-enzyme Q10 - perfect for anyone still enjoying an active lifestyle. As the levels of co-enzyme Q10 in your body naturally decline with age, these handy capsules from Swanson Health can help top up your levels. Co-enzyme Q10 is present in almost all tissues and cells in the body and is in particularly high concentration in the heart and muscle. Each capsule has 30mg of co-enzyme Q10 - perfect for anyone still enjoying an active lifestyle. Naturally occurring substance in the body, particularly the heart and muscle. 30mg of co-enzyme Q10 per capsule. 240 capsules per pack The Coenzyme Q10 (CoQ10) supplement is a vitamin-like compound. Each capsule provides 30mg. Read more.