From the manufacturer's website:
Phillips'® Laxative Caplets are an easy-to-swallow, gentle laxative dietary supplement. The convenient caplets provide stimulant-free, comfortable relief of occasional constipation and helps you get back to regular. Just like our other magnesium laxative products, the caplets work with your body's natural process to relieve occasional constipation without cramping.
*These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure or prevent any disease.
Recommended Use: Adults and children 12 years and older: Take 2-4 caplets daily. Children under 12: Ask a doctor before use. Laxative caplets may be taken all at bedtime (preferable), or individually throughout the day