We recommend taking 2-3 capsules per day, served in warm water after breakfast. This is because most nutritional supplements are best taken with a meal to help absorption. R-Cell's exclusive formula contains vitamins D and E , coenzyme Q10 and other fat-soluble nutrients. Therefore, it is best to take it with a meal containing dietary fat. In addition, since the product contains vitamin B and other active ingredients, we do not recommend taking it at night to avoid disturbing your rest.