Formula 303 Ingredients - How They Help Prevent Muscle Spasms The key active Ingredients in Dee Cee Labs Formula 303 are 6 parts Valerian, 3 parts Passiflora, and 1 part Magnesium. These all-natural ingredients can be obtained through plants and minerals and ingested to help support muscle function. This supplement contains ingredients that can naturally reduce the occurrence of muscle spasms. … [Read more...]