Formula 303 is a natural relief for: Muscle spasm & leg cramps Tension Stress Anxiety Jitters Insomnia Back spasm TMJ Fibromyalgia Menstrual cramps Formula 303 is a homeopathic formula Each formula 303 tablet contains: 6 parts valerian root (quad-strength) 1x 3 parts passiflora (quad-strength 1x 1 part magnesium carbonate 1x Directions: Adults & children 12 years of age and older,take as directed by your doctor. Muscle spasm: As a muscle relaxant for muscle spasm, take two formula 303 tablets every three hours until relief is obtained. Then, two tablets with each meal and two at bedtime. Tension, Stress/Anxiety: As a natural relaxant, take two tablets of formula 303 with each meal and two tablets of our natural relaxer formula 303 at bedtime. Many people find that formula 303 helps them sleep when they take it approximately 45 minutes before bedtime. If you continue to have trouble sleeping even after taking formula 303 for several days, you should probably seek the advise of your family physician to determine if there is an underlying cause other than simple stress or tension. Formula 303 90 tablets size is great at relieving anxiety and stress